VR5. HD Spatial Channel Emulator User Manual

Transcription

1 VR5 HD Spatial Chael Emulator User Maual

2 Spiret 541 Idustrial Way West Eatotow, NJ USA Web: AMERICAS SPIRENT EUROPE AND THE MIDDLE EAST +44 (0) ASIA AND THE PACIFIC This maual applies to VR5 Versio 1.20 or higher. Page Part Number: , Versio A2 Copyright 2012 Spiret. All Rights Reserved. All of the compay ames ad/or brad ames ad/or product ames referred to i this documet, i particular, the ame Spiret ad its logo device, are either registered trademarks or trademarks of Spiret plc ad its subsidiaries, pedig registratio i accordace with relevat atioal laws. All other registered trademarks or trademarks are the property of their respective owers. The iformatio cotaied i this documet is subject to chage without otice ad does ot represet a commitmet o the part of Spiret. The iformatio i this documet is believed to be accurate ad reliable; however, Spiret assumes o resposibility or liability for ay errors or iaccuracies that may appear i the documet.

3 Safety Summary If the equipmet is used i a maer ot specified by the maufacturer the protectio provided by the equipmet may be impaired. Safety Symbols The followig safety symbols are used throughout this maual ad may be foud o the istrumet. Familiarize yourself with each symbol ad its meaig before operatig this istrumet. Istructio maual symbol. The product is marked with this symbol whe it is ecessary for you to refer to the istructio maual to protect agaist damage to the istrumet. Protective groud (earth) termial. Used to idetify ay termial which is iteded for coectio to a exteral protective coductor for protectio agaist electrical shock i case of a fault, or to the termial of a protective groud (earth) electrode. Idicates dagerous voltage (termials fed from the iterior by voltage exceedig 1000 volts must be so marked). Frame termial. A coectio to the frame (chassis) of the equipmet which ormally icludes all exposed metal structures. The cautio sig deotes a hazard. It calls attetio to a operatig procedure, practice, coditio or the like, which, if ot correctly performed or adhered to, could result i damage to or destructio of part or all of the product or your data. Alteratig curret (power lie).

4 Résumé des règles de sécurité Si le matériel est utilisé d ue faço o coforme aux spécificatios du costructeur, la protectio assurée par le matériel peut être mise e défaut. Symboles de sécurité Les symboles suivats sot utilisés das tout le mauel et peuvet être trouvés sur le matériel. Il est recommadé de se familiariser avec chaque symbole et sa sigificatio avat de maipuler le matériel. Symbole «mauel d istructio». Ce symbole apparaît sur le produit lorsqu il est écessaire de se référer au mauel d istructio pour éviter ue détérioratio du matériel. Terre : ce symbole idetifie la coexio de terre chargée de protéger le matériel cotre les chocs électriques. Cette coexio doit être raccordée vers u coducteur extere de protectio ou vers ue électrode de type terre. Ce symbole idique u voltage dagereux (coexio alimetée e itere par u voltage excédat 1000 volts). Masse. Ce symbole idetifie ue coexio au châssis du matériel (ce châssis iclut ormalemet toutes les structures métalliques exposées). Ce symbole désige ue opératio ou ue coditio dite «sesible», qui, si elle est pas correctemet réalisée, pourrait etraîer de sérieuses détérioratios au matériel ou aux doées utilisateur. Courat alteratif (lige de puissace).

5 Table of Cotets 1. Itroductio Overview Evaluatig Radio Access Techologies VR5 Istrumet Descriptio Rear Pael Descriptio Operatio Referece Istrumet Cotrol Laptop-based GUI Touchscree-based GUI Remote Programmig Iterface (RPI) VR5 Operatig Coditios Vetilatio Coectig the Cotroller Laptop to the VR VR5 Graphical User Iterface Overview Tooltips Play/Pause/Stop Fadig Coectio Setup Chael Model Selectig the Fadig Mode Cofigurig the Chael Model Workig with Libraries Propagatio Coditios Correlatio Trasferrig Library Files RF Setup ad Measuremet Uit Number Carrier Frequecy Iput Output AWGN... 28

6 ii VR5 HD Spatial Chael Emulator User Maual Advaced Settigs Relative Power Betwee Radio Liks Eablig ad Disablig Radio Liks Lik Phase Phase Calibratio Dyamic Eviromet Emulatio (DEE) Settig up a Dyamic Eviromet Test Creatig a DEE File Dyamic Eviromet Emulatio (DEE) View DEE i Detail Updatig the VR5 Password Upgradig VR5 Software Upgradig Software o the Istrumet Upgradig Software o the Laptop Remote Programig Iterface Overview RPI Setup Eable Moitor Messages Eable TCP/IP Echo Migratig from SR5500 RPI Compatibility Logical Idetificatio VR5 RPI Commad Protocol Commad Types Program Messages Commad Sequece Respose Format Log Form ad Short Form of Memoics Hierarchical Default Format Error Message Format RPI Commad Referece Overview RPI Commad Set Descriptios... 68

7 Table of Cotets iii 5. Chael Modelig Referece Overview Power Delay Profile(PDP) Static Relative Path Delay Bulk Delay Time-Varyig Relative Path Delay Movig Propagatio - Slidig Relative Path Delay Birth-Death - Time-varyig Relative Path Delay Relative Path Loss Fast Fadig Rayleigh Fadig Amplitude Distributio Ricia Fadig Amplitude Distributio Fast Fadig Power Spectrum Shapes Static Amplitude Chael Effects Fixed Frequecy Shift High Speed Trai Frequecy Shift Phase Shift Slow Shadow Fadig Techical Specificatios RF Chael Specificatios Iput Sigal Level Output Sigal Level Bi-directioal Levels Spurious Emissio Levels Residual EVM Noise Floor RF Physical Iterface Characteristics Iterface ad Evirometal Characteristics VR5 Frot Pael Idicators VR5 Power Requiremets Operatig Eviromet VR5 Dimesios ad Weight VR5 Cotrol Iterfaces MHz Referece Requiremets

8 1. Itroductio 1.1. Overview The Spiret VR5 HD Spatial Chael Emulator simplifies MIMO testig for techologies such as LTE ad LTE-Advaced. These techologies rely o large umbers of ateas, higher badwidth, ad bad aggregatio to deliver high-speed data. VR5 provides itegrated bi-directioal RF chaels ad supports carrier aggregatio. With high fidelity chael ad log simulatio repetitio rates, the VR5 esures reliable ad accurate performace evaluatio. It features a easy to use GUI that provides oe-click access to the most ofte used fuctios. The step-by-step desig of the GUI alog with the graphical feedback at each step esure eve the most ovice user ca quickly set up ad ru the complex RF eviromets eeded to test mobiles ad base-statios used i LTE, LTE-Advaced ad beyod. The itegrated touch scree iterface o the frot pael lets you track test progress i real-time ad make quick chages to the test setup. The VR5 also icludes support for MIMO Over-the-Air testig usig the MIMO OTA Eviromet Builder Software. Figure 1-1: VR5 HD Spatial Chael Emulator

9 2 VR5 HD Spatial Chael Emulator User Maual Evaluatig Radio Access Techologies The VR5 possesses the capabilities ecessary to evaluate a broad rage of local ad wide-area wireless etwork techologies. With frequecy coverage up to 6 GHz, the VR5 covers all deploymet frequecy bads. Supported techologies iclude: GSM/GPRS/EDGE WCDMA WCDMA HSPA (HSDPA/HSUPA) HSPA+ LTE LTE-Advaced CDMA2000 1x CDMA2000 1xEV-DO CDMA2000 1xEV-DV Locatio-based Services a/b/g (WiMAX) HiperLAN 1.2. VR5 Istrumet Descriptio There are three versios of the VR5 hardware; the VR5-4C08D, VR5-4C16D, ad the VR5-8C16D. The VR5-8C16D is show i Figure 1-2.

10 Chapter Oe: Itroductio 3 Figure 1-2: VR5 Frot Pael CAUTION: The RF IN ad OUT Ports ca accept a limited power rage. Refer to the techical specificatios to esure absolute maximum levels are ot exceeded. The ports i the frot pael of the VR5 are a combiatio of simplex (Iput or Output oly) ad duplex (Iput/Output) ports. The text ext to each port specifies its bidirectioal or ui-directioal ature.

11 4 VR5 HD Spatial Chael Emulator User Maual Rear Pael Descriptio DSPM Figure 1-3: VR5 Rear Pael AUX 1 through AUX 3 Reserved ports GBE1 & GBE2 Reserved ports SYNC IN & SYNC OUT Reserved ports OUT 1 & OUT 2 Reserved ports IN 1 & IN 2 Reserved ports I/O 1 & I/O 2 Reserved ports SMM AUX 1 through AUX 5 Reserved ports User Coect RJ45 Etheret Coector. Used to cotrol VR5 istrumet through VR5 GUI or Remote Programmig Iterface (RPI) commads. This port supports TCP/IP. It is recommeded that a Category 5 Etheret cable be used. 10MHz IN BNC Type Coector (50 Ω). Accepts exterally supplied 10 MHz sie wave referece sigal. 10MHz OUT BNC Type Coector (50 Ω). Provides a 10 MHz sie wave referece sigal as output. TRIG 1 & TRIG 2 Reserved ports SYNC 1 through SYNC 5 Reserved ports Power Cord Receptacle Type IEC C20 (Mates to IEC C19 plug)

12 2. Operatio Referece 2.1. Istrumet Cotrol The VR5 has three iterfaces that allow you to cotrol ad moitor the istrumet i realtime. 1. Laptop-based Graphical User Iterface (GUI) 2. Touchscree-based GUI 3. Remote Programmig Iterface Laptop-based GUI The laptop based GUI gives you the maximum flexibility to cofigure test set up Touchscree-based GUI The Touchscree allows you to make quick chages to the test setup ad moitor istrumet state. This icludes: Loadig Chael Model Library files Play, Pause, ad Stop fadig Usig the Temporal Player to track Iput, Output ad C/N levels over time Usig the Chael Player to track the Istataeous Power Delay Profile Moitorig RPI commads Chage the VR5 istrumet IP address Remote Programmig Iterface (RPI) The RPI gives you the ability to remotely cotrol the VR5 through commads set over a TCP/IP coectio. For more iformatio o RPI, refer to Chapter 3 o page 59.

13 6 VR5 HD Spatial Chael Emulator User Maual 2.2. VR5 Operatig Coditios The VR5 istrumet should be placed i a locatio tha ca properly support the weight of the istrumet ad be coected to a power source that is rated for the required power of the istrumet. Additioally, care must be take to esure that the ambiet temperature is withi the operatig rage of the VR5. Refer to the techical specificatios for details regardig the weight, power, ad ambiet temperature requiremets of the istrumet. CAUTION: Whe istallig the VR5 i a rack cofiguratio, care must be take to esure that the rack is properly cofigured to support the weight of the VR5 istrumet safely ad to maitai a ambiet temperature iside the rack that is withi the specified operatig temperature rage of the VR5. Because the VR5 vetilatio system operates from side to side, we recommed that you use veted (or o) side paels i ay rack cofiguratio that icludes the VR5. Whe usig veted side paels, we recommed that they have a miimum of 65% vetig. Such a cofiguratio allows allow air to eter ad exit the rack more easily. Uless properly desiged to adequately circulate cool air ito the rack, ad i particular to the iflow side of the VR5, the use of a VR5 i a rack cofiguratio with solid side ad rear paels may result i higher tha specified temperatures withi the rack. Failure to maitai a ambiet temperature withi the specified operatig rage of the VR5 will lead to excessive fa oise ad possible thermal shutdow of the VR Vetilatio For proper vetilatio, esure that the rack is located i a area with the followig coditios: A miimum of eightee (18) iches of space betwee the sides of the rack ad ay objects that may restrict air flow. For example, a wall, cabiet, or aother rack. A miimum of twelve (12) iches of space betwee the rear door ad ay object that may restrict air flow. For example, a wall, cabiet, or aother rack. Make sure there is othig that blocks the airflow from the exhaust fas o the top of the rack. Do ot allow other equipmet to exhaust ito the rack, as this may cause the equipmet to overheat. If isufficiet vetilatio is provided, the equipmet i the rack may overheat. This ca cause improper operatio Coectig the Cotroller Laptop to the VR5 1. Usig a Etheret cable, coect the cotroller laptop to the User Cotrol Etheret port o the rear pael of VR5 HD Spatial Chael Emulator, as show i Figure 2-1.

14 Chapter Two: Operatio Referece 7 Figure 2-1: VR5 Rear Pael 2. Esure the VR5 uit is ruig properly. 3. Lauch the VR5 HD Spatial Chael Emulator software. The Chael Emulator Software widow displays, as show i Figure 2-2. Figure 2-2: VR5 HD Spatial Chael Emulator Widow 4. Eter the IP address of the VR5 ad click Coect. The IP address of your VR5 ca be foud o the VR5 Touchscree. 5. The VR5 Graphical User Iterface displays.

15 8 VR5 HD Spatial Chael Emulator User Maual 2.5. VR5 Graphical User Iterface Overview The iput parameters to the VR5 are logically orgaized ito the followig groups of parameters: Coectio Setup Chael Model Propagatio Coditios Correlatio (applicable oly to Classical Chael Models) RF Parameters The VR5 GUI, show i Figure 2-3 allows you to view ad set these parameters. Figure 2-3: VR5 GUI Tooltips The VR5 GUI provides Tooltips for quick explaatios o certai parameters whe you roll the mouse over text i the widow. To use Tooltips, keep the mouse cursor over a text label to display a widow with a short explaatio of the tool Play/Pause/Stop Fadig Use the Play butto to cause the fadig emulatio to proceed. Use the Stop butto to stop the fadig emulatio ad reset the Elapsed Time to zero. Use the Pause butto to temporarily susped the fadig emulatio playback. While paused, use the Play butto to resume fadig emulatio.

16 Chapter Two: Operatio Referece 9 While stopped or paused, the sigal passig through the VR5 does ot vary. The sigal is subjected to the exact fadig coditios at the momet idicated by the Elapsed Time idicator. Whe the VR5 is i "Stopped" state, phases are automatically applied to each of the radio liks so as to provide maximum MIMO throughput. The actual phases applied vary based o the Coectio Setup ad are also referred to as the Butler matrix Coectio Setup The VR5 supports a variety of MIMO ad SISO cofiguratios. The cablig is doe iterally withi the hardware. The differet cofiguratios are selected through the Coectio Setup. To select a Coectio Setup: 1. I the Mai view of the VR5 GUI, uder the Coectio Setup sectio, click the Select butto, as show i Figure 2-4. Figure 2-4: Coectio Setup 2. The Coectio Setup Selectio widow displays all available Coectio Setup cofiguratios, as show i Figure 2-5.

17 10 VR5 HD Spatial Chael Emulator User Maual Figure 2-5: Coectio Setup Selectio Widow NOTE: Some Coectio Setups types require multiple VR5 uits. For istace, 8x2 MIMO Bi-Directioal. I these cases, the coectio diagram specifies which ports belog to which VR5 uit. NOTE: The list of available Coectio Setup cofiguratios depeds o the selected Fadig Mode. For more iformatio o Fadig Mode, refer to Sectio o page Select the Coectio Setup you would like to lear more about. Note that a Setup does ot take effect i the hardware util you click the OK butto. 4. Uder the Selected sectio, a verbal ad visual descriptio of the selected Coectio Setup displays. The text "RPI: 4X2_BI_FDD" i the above diagram gives you the ame to use to refer to this coectio setup from RPI. 5. Uder the Diagram sectio, a illustratio of the setup displays the followig iformatio: a. Physical cablig ad coectios iside the VR5 hardware for the highlighted Coectio Setup. Note that these coectios are automatically made iside the VR5 whe you select a particular Coectio Setup. You do ot eed to coect aythig maually.

18 Chapter Two: Operatio Referece 11 b. The umber of VR5 uits required. c. The logical ad physical ports used. Esure that you coect to the VR5 o the physical ports idicated to the left ad right-had sides of the diagram. d. Number of supported Chael Models. e. The colored arrows iside the Fadig box deote the various radio liks. Each set of radio liks with the same color shares the same Chael Model. The umbers ext to them deote the Chael Model used for that set of radio liks. For more iformatio o Chael Models, refer to the Sectio 2.7 o page 11. f. Specifies if the setup is Ui-directioal or Bi-directioal. 6. After selectig the Coectio Setup, click the OK butto. 7. The uit is ow cofigured accordig to the selected Coectio Setup Chael Model Selectig the Fadig Mode The VR5 operates i several differet Fadig Modes. The Fadig Mode determies the ature of the parameters etered i the Chael Model. Classical Chael Models: These chael models are suitable for arrowbad techologies. The iput parameters cosist of Propagatio Coditios ad the Correlatio. Geometric Chael Models: These chael models are suitable for wide badwidth, multiple atea techologies. The iput parameters cosist of the Geometric (spatial) characteristics of the wireless eviromet emulated. Use this Fadig Mode to emulate chael models based o SCM, SCME, ad WINNER. The correlatio betwee the radio liks (MIMO braches) is implicit i the geometric settigs selected for the Chael Model; the correlatio is ot specified separately for Geometric Chael Models. To cofigure Fadig Mode: 1. From the VR5 GUI meu bar, select Cofigure>Fadig Mode, as show i Figure 2-6.

19 12 VR5 HD Spatial Chael Emulator User Maual Figure 2-6: Fadig Mode Meu Item 2. The Fadig Mode widow displays, as show i Figure 2-7. Figure 2-7: Fadig Mode Widow 3. Select the Fadig Mode from the optios show i Figure 2-7. NOTE: The VR5 ca be put i MIMO OTA Mode oly by lauchig the MIMO OTA Eviromet Builder software or through the RPI Cofigurig the Chael Model Each set of radio liks with the same color i the Coectio Setup Diagram o the Mai View ca have their ow Chael Model. The umbers agaist the radio liks idicate the idex of the chael model. To view or edit the correspodig chael models, uder the Mai View of the GUI, select Chael Model. The propagatio coditios ad correlatio matrix for each of the chael models ca be edited, saved ad recalled i separate files idepedet of each other. Each row i the table uder the Chael Model box correspods to the chael model for the set of radio liks with the same idex i the Coectio Setup. The Chael Model icludes the followig parameter groups: Propagatio Coditios This is the multi-path power delay profile alog with all the other fadig parameters. You ca specify oe set of Propagatio Coditios correspodig to each Chael Model.

20 Chapter Two: Operatio Referece 13 Correlatio This is a matrix that represets the correlatio betwee radio liks. You ca specify oe Correlatio matrix correspodig to each Chael Model. This applies oly to Classical Chael Models. These parameters are explaied i detail i the followig sectios Propagatio Coditios To edit the propagatio coditios: 1. Click the row correspodig to the propagatio coditios you would like to view or chage. 2. A drop-dow arrow ad a Edit butto display i that row, as show i Figure 2-8. Figure 2-8: Selectig the Propagatio Coditios 3. Click the Edit butto. The Iteractive Propagatio Coditios Editor widow displays. 4. A table displays the followig iformatio: a. The rows that correspod to multi-paths. b. The colums correspod to the various fadig parameters. 5. The parameters i this widow outside the table apply to all the paths. 6. The checkboxes i the leftmost colum uder Path eable you to iclude or exclude a path from the chael model. If the checkbox for a particular path is ot selected, it will ot be icluded i the chael model. NOTE: Ay chages made to Propagatio Coditios Parameters i this widow take effect i the VR5 hardware immediately. Whe you are fiished makig chages i the Iteractive Propagatio Coditios Editor, there are two optios: 1. Cotiue your tests without savig chages Click the Close butto to exit without savig the propagatio coditios i a particular ame for future recall. Note that the VR5 still retais the altered propagatio coditios uder Usaved Profile. 2. Save chages ito a file i the library Click the Save As butto to specify a ame ad descriptio for the Propagatio Coditios. This file will be available i the Propagatio Coditios library uder User Created folder. I either case, the VR5 reflects the propagatio coditios as specified i the editor after exitig. To apply stadardized or previously saved Propagatio Coditios:

21 14 VR5 HD Spatial Chael Emulator User Maual 1. Click the row correspodig to the propagatio coditios you would like to view or chage. 2. A field displays, as show i Figure 2-9. Clickig the arrow displays a list of the 10 most recetly accessed Propagatio Coditios. Figure 2-9: Selectig Propagatio Coditios 3. To access the etire Library of Propagatio Coditios, click the More butto. This is composed of both caed, stadardized Propagatio Coditios supplied with the VR5 ad user-created Propagatio Coditios Classical Chael Model Propagatio Coditio Parameters The followig propagatio coditio parameters are available with the Classical Chael Models. Fadig Type The Fadig Type ca be set to Static, Rayleigh or Ricia. Velocity ad Doppler This parameter sets the velocity for each path. The Carrier Frequecy, Doppler, ad Velocity parameters are iterdepedet. Whe the Carrier Frequecy is chaged, VR5 calculates the Doppler to maitai the curretly set Velocity. Spectrum Shape The VR5 allows you to select the Fadig Spectrum Shape for each path with idepedetly set status. You ca oly set the Fadig Spectrum Shape for paths that are set to Rayleigh or Ricia. Ricia Parameters The followig path parameters apply whe the Path Status is set to Ricia. Lie of Site Agle of Arrival (LOS AOA) Lie of Site Doppler (LOS Doppler) Ricia K Factor (Ricia K) The LOS AOA ad LOS Doppler are depedet. Settig oe of these parameters causes the other to be reset to the appropriate calculated value. The Carrier Frequecy, LOS AOA, ad LOS Doppler parameters are iterdepedet. Whe the Carrier Frequecy is chaged, the VR5 calculates the LOS Doppler to maitai the curretly set LOS AOA. Frequecy Shift Each path ca have a idepedet Frequecy Shift associated with it. If the Fadig Type is set to static, this is sometimes called Pure Doppler.

22 Chapter Two: Operatio Referece 15 Phase Shift Each path ca have a idepedetly associated Phase Shift settig. Delay Mode The delay mode ca be set to Fixed, Slidig Delay, or Birth Death. Fixed Delay Sets the amout of fixed delay associated with each path. Slidig Delay Slidig Delay ca be applied to a path by settig the Slidig Delay Parameters grid. Birth Death Delay The VR5 allows ay umber of paths to have Birth Death Delay. To setup a path for Birth Death Delay, use the Delay Mode colum ad select Birth Death. Relative Path Loss Each path ca have its ow relative fixed loss. To set the Relative Path Loss, use the correspodig colum. NOTE: The VR5 ormalizes the power of each path to maitai a composite chael power that equals the Set Output Level. The Path Loss value idicates the path power relative to other paths i the Power Delay Profile. If oly oe path is eabled, the Relative Path Loss settig is ot relevat. Log-Normal Parameters Each path ca have Log-Normal fadig eabled. You ca also set the Rate ad Stadard Deviatio of Log-Normal. NOTE: Eablig Log Normal o ay path reduces the available output power settig for the chael ad degrades system oise ad spurious performace. This is due to the additioal headroom requiremets of Log-Normal. This is true eve if the path is ot eabled. Bulk Delay Defies a additioal amout of delay applied to each path i the model Correlatio To view/edit the Correlatio Matrix: If you have selected Classical Chael Models as the Fadig Mode, a Correlatio colum displays ext to Propagatio Coditios.

23 16 VR5 HD Spatial Chael Emulator User Maual 1. Click the row correspodig to the Chael Model whose Correlatio you would like to view or chage. A field displays, as show i Figure Clickig the arrow displays a list of the 10 most recetly accessed Propagatio Coditios. Figure 2-10: Selectig Propagatio Coditios 2. Click the Edit butto. The Correlatio Editor widow displays, as show i Figure Figure 2-11: Correlatio Editor Widow The Properties sectio of the editor idicates the umber of trasmit ad receive ateas for the curret Coectio Setup. The Matrix sectio of the editor allows you to view ad edit the correlatio matrix. You ca set a uique correlatio matrix for each path of your chael model. Select the path to view/edit by selectig it from the drop-dow field. Correlatio matrices have the property that the lower triagle of the matrix is the complex cojugate of the upper triagle of the matrix. It is ecessary for you to eter the correlatio values for the lower triagle oly. The upper triagle is automatically populated so that the etries are the complex cojugate of the correspodig etries o the lower triagle.

24 Chapter Two: Operatio Referece 17 A correlatio matrix should be positive semi-defiite to be valid. The VR5 automatically verifies the validity of the correlatio matrix as you eter each elemet. If the matrix is valid, this is idicated by the Valid label, as show i Figure If it is ivalid, this is idicated by a Ivalid label. Figure 2-12: Correlatio Validatio If the correlatio matrix for the curret path is valid but that of aother path is ivalid, that is idicated by the Chael Correlatio label. Values ito the correlatio matrix ca be etered i ay order. However, keep i mid that the values etered i the top-left of the matrix affect the rage of values i the bottom-right of the matrix. Because of these rage depedecies, the easiest way to eter the values is from top to bottom by tabbig through the matrix. If you would like to use the same correlatio matrix for all paths, click the Copy To All Paths butto. To reset the correlatio matrix of the curret path to zero, click the Clear Path butto. Whe you are fiished makig chages i the Correlatio Editor, you have two optios: 1. Cotiue your tests without savig chages Click the Close butto to exit without savig the correlatio matrix i a particular ame for future recall. Note that the VR5 still retais the altered matrix coditios uder Usaved Correlatio. 2. Save chages ito a file i the library Click the Save As butto to specify a ame ad descriptio for the Correlatio Matrix. This file will be available i the Correlatio library uder User Created folder. I either case, the VR5 reflects the correlatio matrix as specified i the editor after exitig. To apply stadardized or previously saved Correlatio: 1. Clickig the arrow displays a list of the te most recetly used Correlatio Matrices for the curret Coectio Setup, as show i Figure 2-13.

25 18 VR5 HD Spatial Chael Emulator User Maual Figure 2-13: Selectig a Correlatio Matrix 2. To access to the etire library of Correlatio Matrices for the curret Coectio Setup, click the More butto. This is composed of both caed, stadardized Correlatio Matrices supplied with the VR5 ad user-created Correlatio Matrices. NOTE: I a MIMO system, the dimesios of correlatio matrices are directly related to the umber of trasmit ad receive ateas. For a M x N MIMO system, the size of the correlatio matrix is MN x MN The VR5 filters the list of Correlatio Matrices i the More drop-dow meu to show oly the matrices that are relevat to the curret Coectio Setup. The same applies for whe you access the Library through the More drop-dow meu. This esures that oly the matrices that you eed for your curret setup are displayed Geometric Chael Model Propagatio Coditio Parameters The followig propagatio coditio parameters are available i the Geometric Chael Model: Fadig Type: Rayleigh ad static modulatio types are supported. BS PAS: Defies the Power Azimuth Spectrum at the BS: Laplacia, Gaussia, or Uiform, for a path. BS Agle Spread: This refers to the agle spread of each path at the BS. MS PAS: Defies the Power Azimuth Spectrum at the MS: Laplacia, Gaussia, or Uiform, for a path. MS Agle Spread: This refers to the agle spread of each path at the MS. NOTE: The higher the Agle Spread, the bigger the cluster from which the sigal is arrivig/departig. The higher the Agle Spread, the lower is the correlatio betwee chaels for a give atea separatio ad AoA/AoD.

26 Chapter Two: Operatio Referece 19 AOD: The Agle of Departure (AoD) is defied to be the mea agle with which a departig path s (cluster s) power is trasmitted by the BS array with respect to the atea array broadside. The atea broadside refers to the directio i which the atea gai is the highest. By settig differet AoD s for each path, you ca model the sigal arrivig/departig from the BS through clusters at differet locatios i space. AOA: The Agle of Arrival (AoA) is defied to be the mea agle with which a arrivig path s (cluster s) power is received by the MS array with respect to the atea array broadside. By settig differet AoA s for each path, you ca model the sigal arrivig at the MS from clusters at differet locatios i space. MS Directio: Defies the agle of the MS velocity with respect to the MS broadside. MS Velocity: Defies the Velocity of the MS. LOS Eabled: Allows the additio of a Lie of Sight (LOS) path. LOS AOD: The LOS Agle of Departure (AOD) is the Agle of LOS directio betwee BS ad MS, with respect to the broadside of BS atea array. LOS AOA: The LOS Agle of Arrival (AOA) is the Agle of LOS directio betwee MS ad BS, with respect to the broadside of MS atea array. This determies the Agle of Arrival of the LOS compoet. LOS Doppler: This is the compoet of the Doppler i the LOS directio. LOS K Factor: The K Factor is the ratio of power betwee the LOS compoet ad the o-los (NLOS) compoets for a path. The K factor settig has a valid rage of -30dB (faded spectrum will domiate) to +30dB (LOS compoet will domiate). The power is divided such that the LOS compoet will have a relative power of K/K+1 ad the power of the NLOS compoets is 1/K+1. Mid-Paths Eabled: Eables mid-paths o the path. Please refer to SCME specificatio for more iformatio o mid-paths. Number of Mid-paths: Whe mid-paths is eabled, each path is composed of a umber of mid-paths. Number of Scatterers per Mid-path: Whe mid-paths is eabled, each path is composed of a umber of mid-paths. Relative Power per Mid-path: This is a read-oly field. It defies the relative power of each mid-path. The sum of mid-path powers for each path will be uity. Excess Delay per Mid-path: Defies how much additioal delay (beyod the delay set for the path) each mid-path has. Num Scatterers: This is the umber of scatterers per cluster i your eviromet. Presetly, this umber is fixed at 20. This value is read-oly.

27 20 VR5 HD Spatial Chael Emulator User Maual Delay Value: Defies the delay for the path. Whe mid-paths are eabled for a path, the maximum delay for the path is microsecods. Relative Path Loss: Defies the relative power of path compared to path 1. XPD: Defies the Cross-Polarizatio Discrimiatio value for the chael. Bulk Delay: Defies a additioal amout of delay to be applied to each path i the model Geometric Chael Model Atea Settigs Access the Geometric Chael Model Atea settigs from the Cofigure meu. The Coectio Setup Atea Settigs widow displays, as show i Figure Figure 2-14: Coectio Setup - Atea Settigs Widow I the Coectio Setup Atea Settigs widow, you ca set atea-related parameters for the Geometric Chael Models. The followig parameters are available: Base Statio (BS) Spacig: Defies the spacig, i wavelegths, of the BS ateas. Atea spacig is also displayed i meters. This depeds o the carrier frequecy.

28 Chapter Two: Operatio Referece 21 Polarizatio: Defies the polarity of the BS atea as either parallel vertical ateas, or cross-polarized atea pairs. Use Atea Patter: Allows atea patter parameters to be iput for the BS. Mobile Statio (MS) Spacig: Defies the spacig, i wavelegths, of the MS ateas. Atea spacig is also displayed i meters; this depeds o the carrier frequecy. Polarizatio: Defies the polarity of the MS atea as either parallel vertical ateas or cross-polarized atea pairs Workig with Libraries The Library is a repository of both user-created ad pre-istalled stadardized cofiguratio files. It allows you to view, edit, ad create cofiguratio files. NOTE: You caot select a cofiguratio file to apply to the VR5 through the Library. You ca oly view, edit, ad create ew files. There are three sectios i the Library: 1. Coectio Setup 2. Propagatio Coditios 3. Correlatio (applicable oly to Classical Chael Models) For Propagatio Coditios ad Correlatio, you ca perform the followig actios: Create your ow files from scratch ad save to the Library uder your ow folder. Edit stadardized files available pre-istalled o the VR5 ad save to the Library uder your ow folder. These files ca be loaded for use o the VR5 from the Mai View uder Cofiguratio. To access the Library: 1. I the VR5 GUI, click the Library butto, as show i Figure 2-15.

29 22 VR5 HD Spatial Chael Emulator User Maual Figure 2-15: Library Butto 2. The followig sectios display i the library: Propagatio Coditios Correlatio Coectio Setup These sectios are explaied i detail i the followig sectios Propagatio Coditios This sectio explais how to use the Propagatio Coditios sectio of the Library to view existig stadardized/user created files ad to create your ow file. 1. Click Propagatio Coditios.

30 Chapter Two: Operatio Referece 23 Figure 2-16: Propagatio Coditios Library O the left of the widow is a collapsible list of propagatio coditios classified by idustry stadards/techology. If you select a particular propagatio coditio, the right side of the widow provides a overview of the chose coditios alog with a visual display of its power delay profile. NOTE: Ay chage you make to the files while i the Library view will ot be reflected o the VR5 hardware. The Library is strictly for viewig, editig ad creatig ew files Creatig a New Propagatio Coditios File 1. Click the New butto. The Propagatio Coditios Editor displays. 2. Create your desired propagatio coditios ad click the Save butto. 3. Eter a ame ad descriptio for the propagatio coditios ad click OK. 4. The ew propagatio coditios are saved i the Library uder the User Created folder.

31 24 VR5 HD Spatial Chael Emulator User Maual Editig a Stadardized Propagatio Coditios File 1. Select the propagatio coditios ad click the Edit butto. The Propagatio Coditios Editor displays. 2. Make chages to the propagatio coditios ad click the Save butto. 3. If ecessary, eter a ame ad descriptio for the edited propagatio coditios ad click OK. 4. The edited propagatio coditios are saved i the Library uder the User Created folder Correlatio This sectio explais how to use the Correlatio sectio of the Library to view existig stadardized/user created correlatio matrices ad to create your ow matrices. Figure 2-17: Correlatio Library Widow O the left of the widow is a collapsible list of correlatio matrices classified by idustry stadards/techology. If you select a particular correlatio, the right side of the widow displays the correspodig correlatio matrix.

32 Chapter Two: Operatio Referece Creatig a New Correlatio File 1. Click the New butto. The Correlatio Editor displays. 2. Uder the Properties sectio of the editor, select the umber of trasmit ad receive ateas i the set up. The size of the correlatio matrix i the Matrix sectio is updated accordig to the umber of Tx ad Rx ateas chose. 3. Create the desired correlatio ad click the Save butto. 4. Eter a ame ad descriptio for the Correlatio file ad click OK. 5. The ew correlatio is saved i the Library uder the User Created folder Editig a Stadardized Correlatio File 1. Select the stadardized correlatio ad click the Edit butto. The Correlatio Editor displays. 2. Make chages to the correlatio matrix ad click the Save butto. 3. If ecessary, eter a ame ad descriptio to the correlatio ad click OK. 4. The correlatio is saved i the Library uder the User Created folder Trasferrig Library Files All files created i the Library reside o the VR5 hardware. To trasfer files from oe VR5 to aother, use the Import/Export buttos provided o Library widow. This applies to library files for Propagatio Coditios ad Correlatio. 1. Coect your cotroller laptop ruig the VR5 GUI to the VR5 with the cofiguratio file you wat to trasfer. a. From the VR5 GUI: i. Click the Export butto. ii. Navigate to the locatio o the hard drive of the laptop you would like to save the file i. iii. Name the file ad click Save. 2. Coect your cotroller laptop to the VR5 to which you wat to trasfer the library file. a. From the VR5 GUI: i. Click the Import butto. ii. Navigate to the locatio where you saved the library file. iii. Select the file ad click Ope. b. The file is ow part of your library

33 26 VR5 HD Spatial Chael Emulator User Maual NOTE: The ame of the file is for the purpose of the Export/Import operatio. Whe it is imported ito your Library, it is icluded i the same folder with the same ame as i the previous Library. For example, if you export propagatio coditios amed EVA5_test from the User Created folder ito a file amed file_eva5_test ad import this file o a ew VR5, it will be foud uder the User Created folder with the ame EVA5_test RF Setup ad Measuremet Cofigure the RF settigs for your test through the RF Setup ad Measuremet sectio i the VR5 GUI Mai view. This sectio, show i Figure 2-18, allows you to view ad set RF iput, output levels, carrier frequecies ad AWGN settigs. Figure 2-18: VR5 GUI RF Setup ad Measuremet To cofigure RF Setup ad Measuremet, refer to Sectio 2.6: Coectio Setup o page Uit Number This idicates the VR5 that is beig cofigured. If your Coectio Setup requires multiple VR5 uits, you ca select the VR5 to cofigure by clickig the arrows above ad below the uit umber.

34 Chapter Two: Operatio Referece Carrier Frequecy You ca cofigure a carrier frequecy for each uique trasmissio frequecy i the curret setup. This umber is equal to the umber of chael models idicated o the Coectio Setup Diagram. A sample diagram is show i Figure Figure 2-19: Coectio Setup Diagram For example, if the curret Coectio Setup is MIMO 2x2 BI_FDD, you are required to set two carrier frequecies; oe for the Dowlik ad oe for the Uplik Iput Set the iput levels to match the RMS sigal power at each iput port of the VR Port This is the logical ame of the iput port. The logical port ame correspods to a physical port as show i the Coectio Setup diagram i the Mai View Expected To achieve the best performace from the VR5, you must properly cofigure the iput powers at the VR5 ports to match the RMS power of the iput sigals. This ca be doe maually or through the Autoset fuctio. For bursty sigals, triggered mode iput power measuremets must be eabled through Cofigure > Power Meter Optios.

35 28 VR5 HD Spatial Chael Emulator User Maual Autoset Autoset optimally adjusts the RF frot ed of the port based o power levels that are eterig the port at that time. It esures accurate power levels at the output of the istrumet ad optimizes dyamic rage. It may ot be appropriate for bursty sigals or sigals that vary widely i average power (eg. UE Trasmitters) Output Port This is the logical ame of the output port. The logical port ame correspods to a physical port as show i the Coectio Setup diagram i the Mai View Set Power Set the desired output power level for this port. I order for the output power level to be accurate, the Expected Iput power field should be correctly set maually or through the Autoset fuctio. For bursty sigals, triggered mode iput power measuremets must be eabled i the Cofigure meu Measured This is the measured output power o the port. Averagig ad triggerig for this measuremet ca be set i the Cofigure meu Eable Eables ad disables the sigal o the output port. A checked box idicates that the output port is eabled AWGN You ca view ad set the AWGN settigs for each RF output port usig the colums uder AWGN Eable To eable AWGN iterferece, select Eable Set Ratio To set the ratio of the sigal to oise, specify the value i db.

36 Chapter Two: Operatio Referece Measured Ratio This is the measured sigal-to-oise ratio of the sigal o the output port. This measuremet is derived from the measured output level ad measured oise level o the output port. The measuremet badwidth ad uits ca be adjusted i the Cofigure meu. If this value is differet from the Set Ratio, it is because the Expected Iput level does ot match the Measured Iput level. This i tur results i the carrier output power beig iaccurate ad hece the Measured sigal to oise ratio does ot match the Set Ratio. This ca be solved by clickig Autoset for the particular RF port. To cofigure other AWGN iterferer properties such as measuremet badwidth ad uits, select Cofigure>AWGN Settigs. The AWGN Settigs widow displays, as show i Figure Figure 2-20: AWGN Setup Widow Out Port This is the logical ame of output port. The logical port ame correspods to a physical port as show i the Coectio Setup diagram i the Mai View AWGN Badwidth To set the badwidth of the AWGN oise for a particular output port, eter the value i MHz. Note: the AWGN badwidth must be greater tha or equal to the set Receiver Badwidth.

37 30 VR5 HD Spatial Chael Emulator User Maual Receiver Badwidth This is the badwidth over which the total AWGN power is equal to the value as required by set sigal to oise ratio. Example: For the followig AWGN settigs set output power = -40 dbm, C/N = 10 db, Receiver Badwidth = 20 MHz, AWGN Badwidth = 25 MHz This implies AWGN power required = N = -30 dbm. The AWGN power over 20 MHz is-30 dbm. However, the AWGN exteds over the etire specified 25 MHz Uits There are two differet uits to cofigure the sigal to oise ratio: 1. Carrier to Noise (C/N) The power of the bad-limited oise is set as a ratio of carrier power to oise i the badwidth of the receiver 2. Carrier Bit Power/Noise Power Spectral Desity (E b /N o ) The power of the bad-limited oise is set as a ratio of carrier bit eergy to oise power spectral desity Use the drop-dow meu to specify the uits you would like to use. Relatioship betwee C/N ad E b /N o : The carrier bit power ad oise power i dbm ca be calculated based o the followig formula: Eb (dbm/bps) = C (dbm) - 10*log10(Bit Rate (bps)) where: Eb = Bit power i dbm/bps C = carrier power i dbm Bit Rate = bit rate of the carrier ad N (dbm) = No + 10 log10 (Receiver Badwidth) where: N = oise power i the receiver badwidth i dbm No = oise power spectral desity i dbm/hz Receiver Badwidth = carrier badwidth i Hz Bit Rate Specify the bit rate of the carrier i kbps. This is applicable oly whe the Uits chose for the port is E b /N o.

38 Chapter Two: Operatio Referece Advaced Settigs The Advaced Settigs widow allows you to: Set relative powers betwee radio liks coected to the same output port, to model brach imbalace. Eable or disable idividual radio liks. Set the phases of idividual radio liks. Figure 2-21: Advaced Settigs Widow Relative Power Betwee Radio Liks I the example show i Figure 2-21, if you set the relative power of Radio lik A1->B1 to 3 db, it results i the absolute power of A1->B1 ad A2->B1 beig adjusted so that the followig result occurs: There is a 3 db differece betwee them as show i Figure 2-22.

39 32 VR5 HD Spatial Chael Emulator User Maual The total output power of that port matches the set power i the "RF Setup ad Measuremets" pael. The total output power of ay port is govered solely by the settigs i Sectio 2.8: RF Setup ad Measuremet. Figure 2-22: Radiolik Cofiguratio NOTE: Similar to the rest of the VR5 GUI, ay value you eter or chage you make i this widow takes effect i the VR5 immediately Eablig ad Disablig Radio Liks Whe you disable a radio lik, that radio lik will have zero power ad the powers of the other radio liks coected to that output port are adjusted up so that the total power of the port matches the set power i the "RF Setup ad Measuremets" pael Lik Phase This is a absolute phase i degrees that is applied to each radio lik Phase Calibratio The VR5 has the ability to apply phases to idividual iput ad output ports to calibrate your test setup for phase. If phase calibratio is doe usig the VR i a MB5 system, you do ot eed to use this widow because all the steps are hadled automatically by the Automatic Phase Calibratio procedure. Calibrate the phase by selectig Cofigure>Port Phase Settigs. The Port Phase Settigs widow displays, as show i Figure 2-23.

40 Chapter Two: Operatio Referece 33 Figure 2-23: Port Phase Settigs Widow The phase behavior of the VR5 is depedet o the RF settigs: iput, output power levels, ad the carrier frequecy. I additio, these values apply oly to the curret Coectio Setup. For ay give RF settig, you ca store the phase calibratio values by clickig the Store butto. If you set all output power levels equal durig the calibratio, the phase calibratio values are accurate for a rage of output power levels aroud the calibratio poit. We recommed that you phase calibrate your VR5 for the differet RF Settigs ad Coectio Setup cofiguratios you are usig for the day ad store them. Note that the VR5 eeds to be "Playig" whe you perform phase calibratio. I "Stopped" state, the Butler matrix phases are i place ad the phase calibratio is ot valid after you begi "Playig" fadig. For ay give RF settig ad Coectio Setup, if there are stored phase calibratio values, the VR5 automatically applies those values. If there are ot stored phase calibratio values, the curret phase calibratio values i the Port Phase Settigs apply. NOTE: The phase behavior of RF equipmet varies over time with temperature. We recommed that you do ot use phase calibratio values that are greater tha 8 hours old. The phase calibratio data is ot valid across power cycles. Ay stored values are lost after you reboot the VR5.

41 34 VR5 HD Spatial Chael Emulator User Maual Dyamic Eviromet Emulatio (DEE) This sectio details the parameters that cotrol the Dyamic Eviromet Emulatio (DEE) fuctio available with the VR5. The DEE feature allows you to chage the state of the VR5 dyamically at specified time itervals. The followig parameters ca be chaged: Output Port Settigs Output Power AWGN Status (ON/OFF) C/N Ratio Propagatio Coditio Settigs Path Status (ON/OFF) Path Delay Relative Path Loss Ricia Lie of Sight Agle of Arrival Ricia K Factor Frequecy Shift Doppler Velocity MIMO Radio Liks MIMO Radio Lik Status (ON/OFF) MIMO Radio Lik Relative Power MIMO Radio Lik Phase Correlatio DEE is oly available whe the Fadig Mode is set to Classical Chael Models.

42 Chapter Two: Operatio Referece Settig up a Dyamic Eviromet Test The Followig sectios provide detailed istructios o settig up a test with dyamically chagig eviromet coditios. To set up a dyamic eviromet test: 1. Defie the No-DEE VR5 State The o-dee state refers to the setup of the VR5 whe you are ot usig the DEE feature. Set the o-dee state of the istrumet usig the VR5 GUI or through RPI commads as you would uder ormal operatio. This iformatio combied with State 1 of the State Emulatio file describes the state of the VR5 i State 1 of DEE. All parameters set up statically remai i effect uless the particular parameter is chaged i DEE. Oly certai parameters are capable of beig chaged i DEE. Parameters ot cotrollable i DEE remai i whatever state they are i prior to startig a DEEru. For example, the Fadig Type associated with a path is settable via the GUI or RPI i o-dee mode. Eve though the Fadig Type caot be chaged dyamically via DEE, the Fadig Type set prior to eterig DEE will remai active durig the DEE ru. SPECIAL CASE: Delay Mode If the delay mode for a particular path is set to Birth/Death or Slidig-Delay, the delay for that path caot be chaged i DEE. Slidig Delay ad Birth/Death operates as set i o-dee mode while ruig DEE simulatio. 2. Defiig the Dyamic Eviromet Defie the dyamic chael coditios you would like to emulate i the DEE File. Refer to Sectio2.7.2 for details. NOTE: This file eeds oly to defie chages from the o-dee state of the uit. If iformatio i the template is left blak, it is assumed that o chage is desired. 3. Eter the Dyamic Eviromet Emulatio view i the VR5 GUI, as show i Figure 2-24.

43 36 VR5 HD Spatial Chael Emulator User Maual Figure 2-24: Dyamic Eviromet Emulatio (DEE) View 4. Select the DEE File Select the DEE File by clickig the DEE File butto ad selectig the file from the saved locatio, as show i Figure Cofigure Playback Cotrols Figure 2-25: Selectig the DEE File a. Select the Start Method (Free Play or Triggered Start) i. Free Play DEE will start immediately upo the issuace of a start commad ii. Triggered Start A risig edge must be detected o BNC PORT X prior to the start of DEE simulatio. b. Select the Play Method (Wrap Aroud or Play for X Loops) i. Wrap Aroud The DEE file cotiues to loop idefiitely.

44 Chapter Two: Operatio Referece 37 ii. Play for X Loops - The DEE file plays to the ed, resets, ad loops for X times. After completig X loops, the DEE ru eds ad remais stopped at the begiig of State 1. This meas that statistically, State 1 will be the same each time DEE loops, but the istataeous phase ad amplitude distortio will differ. This is doe to avoid ay glitches whe wrappig from the last state to the first. NOTE: Whe the file loops back to State 1, the state of the istrumet will be the same as it was the first time i State 1; with the exceptio that the radom umber geerator creatig Rayleigh fadig will ot reset. 6. Eable DEE Eable DEE by clickig the Eable DEE butto, as show i Figure Figure 2-26: Eable DEE Butto 7. Play DEE Play the DEE File by clickig the Play butto at the bottom of the GUI, as show i Figure Figure 2-27: Play Butto NOTE: Steps a-e ca also be accomplished via the remote programmig iterface. Refer to Chapter 3 for details. 8. Disablig DEE To disable ad restore the istrumet to its origial state before the eterig DEE: a. Click the Stop butto at the bottom of the GUI, as show i Figure Figure 2-28: Stop Butto b. Click the Disable DEE butto, as show i Figure This stops the DEE egie ad restores the istrumet to its origial state before eterig DEE.

45 38 VR5 HD Spatial Chael Emulator User Maual Figure 2-29: Disable DEE Butto c. NOTE: Emulatio must be stopped before disablig DEE Creatig a DEE File The DEE Template helps you easily create dyamically varyig chael coditios by fillig out a simple spreadsheet Accessig the DEE Template The DEE Template is stored i the root directory of the VR5 Istallatio. This is usually C:\Program Files\Spiret Commuicatios\VR5. The DEE template ca also be accessed through the supplied Start meu shortcut or from the DEE meu i the GUI, as show i Figure Whe accessed through the GUI, the DEE template automatically sets the coectio setup to match the curretly selected coectio setup i the GUI. Figure 2-30: Creatig New Emulatio File Usig the DEE Template The emulatio file ca be modified usig stadard Excel methods. The emulatio file cotais four tabs: the Mai, ChProp, MIMO, ad Correlatio tabs. The Mai Tab The Mai tab displays the coectio setup ad cotais the buttos used to import ad export DEE Files. Additioally, the mai tab cotrols the followig parameters:

46 Chapter Two: Operatio Referece 39 State Duratio The duratio for each state i uits of secods. The miimum state duratio allowed is 100 ms. Note that although state duratio is available for viewig i all of the tabs, the settig i the mai tab are used to determie the set state duratio. The miimum state duratio you ca set is 100 ms. Power X Output For each of the output ports used i the coectio setup, the output power may be set. Port X AWGN Status For each of the output ports used i the coectio setup, the status of AWGN may be set (o or off). Port X C/N Ratio (db) For each of the output ports used i the coectio setup, the status of AWGN may be set (o or off). The Mai tab also icludes the followig buttos that ca be used to perform actios associated with geeratig a DEE file. The Update Timestamp butto updates the Timestamp Colum i each of the tabs. This colum is useful whe determiig how much time it takes to reach state X, especially whe the state duratio of idividual states vary. The Export DEE butto is used to export the iformatio i the template to.xstb format. This is the format that the VR5 software uses to import the state chage iformatio. The Import DEE butto is used to import a previously exported XSTB file back ito the template. The Clear Template butto is used to clear the template of all user etered data. NOTE: Whe exportig a file, if a row is ecoutered without ay data, it is treated as the ed of the file. If you wat to have a umber of states where othig chages, we suggest you fill i the state duratio colum for all of these states, as show i Figure 2-31 ad Figure The data does ot eed to chage, but it does eed to exist. Figure 2-31: Sample Colum with Two States

47 40 VR5 HD Spatial Chael Emulator User Maual ChProp Tab Figure 2-32: Sample Colum with Six States The ChProp X tabs defie dyamic chages associated with each of the propagatio coditios. There is a separate tab available for Chael Model defied i the selected Coectio Setup. For example, the 2X2 BiDirectioal (FDD) coectio setup has two Chael Models ad two associated separate propagatio coditios, as show i Figure Figure 2-33: 2X2 Bidirectioal Coectio Setup Diagram If this coectio setup is selected, there are two tabs available i the template,(chprop 1 ad ChProp 2). Each tab ca be used to set the followig parameters: PX Status (ON/OFF) Defies whether the particular path is eabled. PX Delay (μs) Defies the delay of the particular path. PX Relative Path Loss (db) Defies the relative path loss of the particular path. PX LOS AOA (deg.) Defies the lie of sight agle of arrival of the particular path.

48 Chapter Two: Operatio Referece 41 PX K Factor (db) Defies the Ricia K factor of the particular path. This settig is oly meaigful if the path Fadig Type was set to Ricia i the o-dee mode prior to ruig DEE. PX Frequecy Shift (Hz) Defies the frequecy shift of the particular path. PX Doppler Velocity (Km/h) Defies the Doppler velocity of the particular path. This settig is oly meaigful if the path Fadig type was set to Rayleigh or Ricia i the o-dee mode prior to ruig DEE. Each of the above parameters ca be maually set by editig the template. You ca also right-click a row i the Excel spreadsheet to ope the Import Propagatio Coditios widow, as show i Figure From this widow, you ca import a previously exported fadig profile usig the library view. Note that this widow will oly display if the selected row is before the ed of the emulatio iformatio. RLik Tab Figure 2-34: Import Propagatio Coditios Widow The RLik tab is used to set parameters associated with each of the Radio Liks i the selected coectio setup. For example, the 2X2 BiDirectioal (FDD) coectio setup has a total of eight associated Radio Liks, as show i Figure For each radio lik, you ca modify the followig parameters: AX-BY Eabled This field ca be used to selectively eable or disable a give Radio Lik. AX-BY Relative Power (db) Sets the relative power of the particular radio lik relative to other eabled Radio Liks that are coected to the same output ports. A1-B2 Phase (deg.) Sets the phase offset associated with the particular radio lik.

49 42 VR5 HD Spatial Chael Emulator User Maual Correlatio Tab The Correlatio X tabs are used to set the correlatio matrices associated with each set of propagatio coditios. Similar to the CHProp tabs, there is a separate correlatio tab available for each Chael Model i the chose coectio setup. To edit the correlatio matrix associated with a give state, right-click the desired row i the Correlatio Matrix Editor colum to ope the Correlatio Editor widow. This widow is used to edit the correlatio matrix stored i the Excel file ad is very similar to the Correlatio Editor i the GUI Library view. For details o the Correlatio Editor, refer to Sectio The Correlatio Editor, show i Figure 2-35, allows you to add a matrix by eterig values maually, selectig a stadard correlatio matrix from the library, or selectig a previously saved correlatio matrix. Figure 2-35: Correlatio Editor Expad the Correlatio Library meu to ope a stadard correlatio matrix or load a user-saved matrix by selectig Select your ow from the meu, as show i Figure 2-36.

50 Chapter Two: Operatio Referece 43 Figure 2-36: Correlatio Library Meu The Apply butto allows you to copy the correlatio matrix to the template. The Save As butto allows you to save the correlatio matrix i a.corr file. This file ca be accessed at a later time by selectig Select your ow from the Correlatio Library meu. The Cacel butto allows you to exit the Correlatio Editor without copyig the correlatio to the template. Selectig the Eable TX/RX view optio eables the Trasmitter/Receiver correlatio view. This view allows you to populate the matrix by eterig alpha ad beta values ad the clickig the Apply TX/RX butto. Figure 2-37: TX/RX View Optio Sample DEE File A example DEE File is show i the followig figures. Each figure displays a differet tab i the DEE file.

51 44 VR5 HD Spatial Chael Emulator User Maual Figure 2-38: DEE Template - Sample 1 Figure 2-39: DEE Template - Sample 2

52 Chapter Two: Operatio Referece 45 Figure 2-40: DEE Template - Sample 3 Figure 2-41: DEE Template Sample 4

53 46 VR5 HD Spatial Chael Emulator User Maual Figure 2-42: DEE Template - Sample 5 NOTE: The colum etitled "Complex Correlatio PX" is display-oly. Do ot attempt to modify correlatio by editig this colum. This DEE file performs the followig fuctios: I State 1: Set State Duratio to 1 secod (each state duratio thereafter remais 1 secod uless the particular state is chaged). Set the output power of port A1 to All other parameters remai as defied i o-dee mode. I State 2: Modify the output power of port A1. I State 3: Modify the output power of port A1. Tur Path 2 OFF ( 1 ON, 0 OFF) for propagatio coditio 1. I State 4: Modify the output power of port A1. Tur Path 1 OFF ( 1 ON, 0 OFF) for propagatio coditio 2.

54 Chapter Two: Operatio Referece 47

55 48 VR5 HD Spatial Chael Emulator User Maual I State 5 Modify the output power of port A1. Disable Radio Lik A1->B1 I State 6 Modify the output power of port A1. Chage the delay of Path 2 for propagatio coditio 2. Modify the correlatio matrix associated with propagatio coditios 1 ad Dyamic Eviromet Emulatio (DEE) View The VR5 is capable of dyamically chagig the curret state of a umber of Path ad Chael parameters. These chages ca be setup i a table usig Microsoft Excel Accessig the Dyamic Eviromet Emulatio View Access the DEE view by selectig the Dyamic Eviromet Emulatio view from the meu, as show i Figure Figure 2-43: Dyamic Eviromet Emulatio (DEE) View Selectig a Emulatio File Select the Emulatio file by clickig the Choose Source butto ad selectig the file from the exported locatio, as show i Figure 2-44.

56 Chapter Two: Operatio Referece 49 Figure 2-44: DEE Setup - Selectig the Source File DEE i Detail Eablig DEE Dowload the DEE File to the VR5 by clickig the Eable DEE butto. Whe DEE is eabled, the followig sequece of evets occurs: 1. The settig of all o-dee related parameters is disabled. Parameters caot be modified util DEE is disabled. Attemptig to set a o-dee related parameter results i a error message similar Figure Figure 2-45: DEE Error Message 2. The software compiles the DEE File ito a machie-readable format. A Progress widow opes displayig the status of the DEE compile, as show i Figure If the compile is successful, click the Eter DEE butto. If the compile is usuccessful, review the error messages provided to determie the ature of the error. Typically, errors are geerated whe parameters are set to ivalid values.

57 50 VR5 HD Spatial Chael Emulator User Maual Figure 2-46: Compile Status Widow NOTE: If you have previously successfully compiled the file, you ca skip this step Playig (Ruig) DEE After eablig DEE, prior to clickig the Play butto, the player is stopped at Time 0 of State 1. Whe you click the Play butto, the fadig egie begis, ad the DEE egie begis cyclig through states specified i the DEE File DEE Status Iformatio You ca moitor the progress of the DEE test through the VR5 GUI. The followig iformatio, show i Figure 2-47, is provided to the VR5 GUI from the DEE egie: Cotrol Status Describes the status of the DEE Egie (Eabled or Disabled) State This is the curret state of the DEE File the VR5 is i. Loop This idicates how may times the states have bee looped. Total Time Idicates the total time that DEE has bee playig. Figure 2-47: DEE Status Pael NOTE: The other views i the GUI are active ad provide real-time feedback durig the DEE simulatio. For example, the Chael Player view ca be used to view the real-time propagatio coditios. A exceptio is the Propagatio Editor i the Mai view, which does ot reflect chages durig the DEE simulatio.

58 Chapter Two: Operatio Referece DEE Advaced Cotrol The DEE Advaced Cotrols, show i Figure 2-48, ca be used to debug a DEE test by playig certai states of the DEE File. Advaced cotrols are oly available whe the Play method is set to Wrap Aroud. The Advaced Cotrols allow you to hold the VR5 at a particular DEE state ad play it back as i o-dee mode. You may also step from oe state to the ext. Figure 2-48: DEE Advaced Cotrol Pael The DEE Pause butto is used to hold the DEE simulatio. If the Pause method is set to Immediate, DEE simulatio pauses immediately after clickig the DEE Pause butto. If the Pause method is set to Pause at State X, DEE pauses whe eterig the defied state. Note that DEE oly pauses o state X oce, ot o every loop. To have DEE pause o state X a secod time, click the DEE Pause butto agai. The State Advace butto advaces the state to the ext DEE state after a pause actio has occurred. This allows you to maually step through each DEE state at a slow rate. The DEE Resume butto cotiues the DEE simulatio. Note that while paused, the ext state ca be selected with the DEE Pause butto. Clickig DEE Resume the resumes DEE simulatio util the selected state is etered, at which poit simulatio pauses agai DEE Specificatios Maximum State Trasitio Time: RF Output Level Chages 2 ms. (Measured from start of state chage to completio of state chage) All Other Chages 400 μs (Measured from start of state chage to completio of state chage) DEE Trigger Characteristics: Trigger Sigal TTL, Risig Edge Trigger Sigal Power 3.3 V Miimum Trigger Width 90 s Trigger Delay - from Trigger to Chage i Output Level < 5.0 ms Chage i other parameters < 1.0 ms

59 52 VR5 HD Spatial Chael Emulator User Maual Updatig the VR5 Password You ca update the password through the VR5 frot pael or the Cotroller laptop. 1. If usig VR5 frot pael, coect a mouse to oe of the USB ports o the frot pael. 2. Coect the USB device cotaiig the password ito the other USB port o the VR5 frot pael. 3. From the VR5 GUI meu bar, select Help>Password Utility. Figure 2-49: VR5 GUI Help Meu Item 4. The Password Utility widow displays, as show i Figure Figure 2-50: Password Utility Widow 5. Click the Browse butto ad select the.vr5lic password file. 6. Click Apply. 7. A widow displays idicatig that the password file upgrade is successful Upgradig VR5 Software You must upgrade the VR5 software o the both the VR5 Istrumet ad the laptop Upgradig Software o the Istrumet To upgrade the VR5 software o the istrumet: 1. Plug a USB hub i to oe of the USB ports o the VR5 Istrumet frot pael. 2. Coect a keyboard ad mouse to the USB hub. 3. Coect the USB Flash Drive provided alog with the VR5 to the USB hub. 4. O the VR5 istrumet, select Start>Cotrol Pael, as show i Figure 2-51.

60 Figure 2-51: Selectig Cotrol Pael o the VR5 Istrumet Chapter Two: Operatio Referece 53

61 54 VR5 HD Spatial Chael Emulator User Maual 5. Select Programs ad Features, as show i Figure Figure 2-52: Cotrol Pael Selectig Programs ad Features 6. Right-click VR5 Spatial Chael Emulator ad select Uistall from the meu, as show i Figure Figure 2-53: Uistallig the Program 7. If the widow show i Figure 2-54 displays, select the Automatically close applicatios ad attempt to restart them after setup is complete optio ad click OK.

62 Chapter Two: Operatio Referece 55 Figure 2-54: Close Ope Applicatios Widow 8. Navigate to the ew VR5 istall directory o your USB flash drive, as show i Figure Figure 2-55: The VR5 Istall Directory 9. Ope the setup.exe file ad follow the istructios to istall the latest versio of Spiret VR5 software. 10. Durig the istallatio process, you may be prompted to upgrade istrumet firmware. Click Yes to istall the ew FW.

63 56 VR5 HD Spatial Chael Emulator User Maual NOTE: It ca take up to 45 miutes for a complete upgrade. At the coclusio of the procedure, you may be asked to re-boot the istrumet to complete the upgrades Upgradig Software o the Laptop To upgrade the VR5 software o the laptop computer provided with the VR5: 1. Coect the USB Flash Drive to oe of the USB ports o the laptop. 2. Select Start>Cotrol Pael, as show i Figure Figure 2-56: Selectig Cotrol Pael o the Laptop

64 Chapter Two: Operatio Referece Uder Programs, select Uistall a program, as show i Figure Figure 2-57: Cotrol Pael Uistall a Program 4. Right-click VR5 Spatial Chael Emulator ad select Uistall from the meu, as show i Figure Figure 2-58: Uistallig the VR5 HD Software

65 58 VR5 HD Spatial Chael Emulator User Maual 5. If a widow displays askig if it is ok to modify programs o the local computer, click Yes to proceed. 6. If the widow show i Figure 2-59 displays, select the Automatically close applicatios ad attempt to restart them after setup is complete optio ad click OK. Figure 2-59: Close Ope Applicatios Widow 7. Navigate to the ew VR5 istall directory o your USB flash drive, as show i Figure Figure 2-60: The VR5 Istall Directory 8. Ope the setup.exe file ad follow the istructios to istall the latest versio of Spiret VR5 software.

66 3. Remote Programig Iterface 3.1. Overview The Remote Programmig Iterface (RPI) gives you the ability to remotely cotrol the VR5 HD Spatial Chael Emulator. A computer or termial ca cotrol the VR5 HD Spatial Chael Emulator by issuig commads through the Etheret remote cotrol port. It follows the LAN CR/LF. LAN CR/LF (carriage retur/lie feed) is a simple commad-lie protocol, ad allows you to cotrol VR5 from a termial or a computer usig a TCP/IP socket coectio. Before processig remote commads, you make a coectio to the VR5 HD Spatial Chael Emulator(s). VR5 HD Spatial Chael Emulator commads ad queries are arraged i a tree structure. The top of this tree cotais headers, ad IEEE madatory commads ad queries. Each header ca have more headers ad Program Messages (commads ad queries) uder it. For a complete descriptio of all headers ad commads, refer to Chapter 4 o page 68. As described above, VR5 HD Spatial Chael Emulator commad set is made up of IEEE madatory commo commads, as well as VR5-specific commads. These commads loosely adhere to the SCPI protocol. This simplifies learig ad usig the commad set, if you are already familiar with other IEEE istrumets RPI Setup To set up the remote programig iterface: 1. Coect the cotroller laptop (ruig the automatio program) to the User Cotrol Etheret port o the rear pael of VR5 HD Spatial Chael Emulator, as show i Figure 3-1.

67 60 VR5 HD Spatial Chael Emulator User Maual Figure 3-1: VR5 Rear Pael 2. Esure the uit is ruig properly. Obtai the IP address ad Port to establish a Telet coectio to sed commads ad receive resposes. a. To cofigure or obtai the IP ad Port settigs, select the RPI Cotrol & Moitor view, show i Figure 3-2. b. The IP address is located o the title bar of the VR5 Touchscree. c. The Port settig for the RPI is show i Figure 3-2.

68 Chapter Three: Remote Programmig Iterface 61 Figure 3-2: RPI View Port Settig 3. You ca ow establish a Telet coect to cotrol the VR5 through SCPI commads. For legacy SR5500 users, the VR5 differs from the SR5500 i that the VR5 GUI does ot have to be ruig to sed RPI commads to the VR Eable Moitor Messages Eablig moitor messages eables the display of status iformatio associated with commads received by the RPI. NOTE: Disablig these messages icreases the speed of commad processig Eable TCP/IP Echo Whe eabled, the RPI echoes back all characters set to it. This is useful whe you maually coect to the RPI through a TCP/IP cliet ad eed to view what is beig typed. NOTE: Whe usig automatio software to cotrol the VR5 through RPI, we recommed disablig this fuctio to icrease the speed of the RPI operatio.

69 62 VR5 HD Spatial Chael Emulator User Maual 3.3. Migratig from SR5500 RPI Compatibility The RPI commads set of VR5 is desiged to take full advatage of the hardware platform ad ease-of-programig. It also caters the users RPI programig habit of the SR5500 chael emulator. If you are familiar with SR5500 RPI programig, it is easy to migrate to VR5 programig. Noetheless, the RPI of SR5500 ad VR5 are ot compatible at code level due to a much rich set of fuctioality available i the latter Logical Idetificatio Oe major chage i the RPI commads from SR5500 to VR5 is that the idetificatio of chaels, radio liks, ad ports is logical. The mappig betwee logical ad physical objects is show i the correspodig diagram for the coectio setup used. Figure 3-3: 2x2 Bi-directioal Coectio Diagram Logical ad Physical Idetificatios For example, i Figure 3-3, the 2x2 Bi-directioal coectio has four physical ports: PORT 1, 2, 7, 8; ad four logical ports A1, A2, B1, B2. There are two chael models i the coectio, oe from A to B side, the other from B to A side. I SR5500, this coectio requires two uits. I this example, we assume Uit 1 correspods to the 2x2 ui-directioal chael from A to B ad Uit 2 from B to A.