GNSS P3 Common-View Technique in Synchronization Network Performance Monitoring for LTE-A and 5G NR
|
|
- Trevor Carroll
- 5 years ago
- Views:
Transcription
1 P3 Common-Vew Technque n Synchronzaton Networ Perormance Montorng or LTE-A and 5G NR Sammy Su, Y. J. Huang, C. Y. Chu, and C. S. Lao Natonal Standard Tme and Frequency Lab. Telecommuncaton Laboratores, Chunghwa Telecom Co., Ltd., TAIWAN
2 Hstory o the Prmary Reerence (Tme) Cloc G.8 (988) PRC G.8 (997) PRC G.87 (0) PRTC G.87. (06) eprtc G.87./Y.367. eprtc unctonal model
3 ITU-T Prmary Reerence Tme Cloc (PRTC) Classes ITU-T eprtc/prtc Tme error Holdover PRTC (ITU-T G.87) eprtc (ITU-T G.87.) PRTC-A (Rename PRTC) +/- 00ns Further study PRTC-B* +/- 40ns Further study eprtc-a* wth Cs (eprc) eprtc-b* wth Cs(s) (eprc) +/- 30ns +/- 30ns +/- 00ns over 4 days +/- 00ns over 80days L (C/A code) L C/A code wth L/LC carrer phase** L C/A code (or wth L/LC carrer phase) L C/A code (or wth L/LC carrer phase) *Cable delay compensaton usng Two Way Tme Transer (Layer -TWTT) (Opton). **L=575.4MHz, L=7.7MHz eprtc: enhanced PRTC eprc: enhanced Prmary Reerence Cloc Both eprtc-a/b and PRTC-A/B consttute the networ synchronzaton or accuracy requency, tme and phase to ulll the needs o both servce and nrastructure. 3
4 Hgh Level Archtecture For Accurate and Precse Tme/Phase Dstrbuton For LTE-TDD/LTE-A(FDD,TDD) and 5G NR G.87. eprtc ( eprc(cs)) Fronthaul (ecpri Spec. V.) UTC Frequency +Tme/Phase eprtcs (Core level) UTC level Metrology Insttutes Carrer () Moble Bachaul Sync-E, PTP e.g., enode B ecpri (erec, ere) BIPM/UTC Natonal Tme Standard UTC(*) OTT PRTC-A/B (APTS +AAC) OTT PRTC-A/B (APTS+AAC) Common-vew Servce (G.87) Carrer (n) Moble Bachaul Sync-E, PTP UTC Frequency +Tme/Phase eprtcs (Core level) e.g., enode B ecpri (erec, ere) Synchronzaton networ supervson and measurement ( wth Bg-Data and AI Support ) G.87. eprtc (eprc(cs)) () Full Tmng Support (FTS), or () Partal Tmng support (PTS), wth Asssted Partal Tmng Support (APTS) and AAC. Synchronzaton networ supervson and measurement Drect measurement method: common-vew allows < 0ns Tme Transer or measurement reerence: () IEEE 588 Hgh accuracy (Whte Rabbt) allows a ew ns () Optcal Tme Transer (OTT) allows a ew 00 ps Advanced Synchronzaton Networ Management : Bg-Data, and AI ncludng Knowledge-base Support BIPM: Bureau Internatonal des Pods et Mesures UTC: Coordnated Unversal Tme : Global Navgaton Satellte System Cs: Cesum Cloc PTP: Precson Tme Protocol Sync-E: Synchronous Ethernet CPRI: Common Publc Rado Interace REC: Rado Equpment Controllers RE: Rado Equpment AAC : Automatc Asymmetry Compensaton 4 4
5 PRTCs-Cloud and Perormance Montorng Based on Common-vew Technque n Telecommuncaton Networs PRTC-B PRTC-B TWTT Antenna* eprtc-a Core Center (3) eprtc-a Core Center () PRTC-B eprtc-a eprtc-a Core Center () PRTC-B** PTP Flow PRTC-A UTC level Metrology Insttutes UTC(*) Natonal Tme and Frequency Standard Lab.(UTC(*)) *TWTT: two way tme transer antenna PRTC-B eprtc-a Core Center () Core Center (- ) PTP Flow PRTC-B PRTC-B eprtc-a PTP Flow Core Center (-) PRTC-A PRTC-B PRTC-A **Usng PTP rom the Core eprtc (A,B) to bac up the Edge PRTC(A,B), when the later s unavalable. The PTP accumulates tme error ( cte, dte) as t traverses the networ, where the dte created by the PDV and the cte created by delay asymmetry n the networ. For stable delay asymmetry, t can be calbrated n advance or compensaton. n advance or compensaton. 5
6 Usng PTP From The Core eprtc To Bac Up the Edge PRTC Fronthaul Networ Fronthaul Networ PRTC- B Hgh accuracy requency nput rom eprtc-a/b to stablze the cloc n PRTC- B/PRTC-A. PRTC- B eprc Cs Cs Core-level eprtc-(a, B) PRTC- B PRTC- B PTP low PTP connectons rom the Core eprtc to the Edge PRTC PRTC- B APTS+AAC PTP slave evaluatng PTP connecton asymmetry Fronthaul Networ (Sync-E & PTP) IEEE 80.CM & G.87. Tme Senstve Networ Fronthaul Networ Fronthaul Networ Traceable requency phase drt (Tme Hold-over) Frequency (eprc) 0ns 50ns 00ns us <.0E- >.8 h > 3.9 h > 7.8 h >.6 days 6
7 Consderaton o Desgn a Relable Sync. Networ (req., tme/phase). Relablty e.g. to overcome outages and jammng => Should be not too much dependent, s used => a bac up s need (e.g., eprtc(a, B)). Permanent supervson and measurement => requres better reerence clocs and better tme transer* 3. Avalablty e.g., AAC (Automatc Asymmetry Compensaton) 4. Advanced synchronzaton networ management => Bg-Data, and AI ncludng Knowledge-base Support *Synchronzaton networ supervson and measurement Drect measurement method: Common-Vew Technque allows < 0ns Tme Transer or measurement reerence: () IEEE 588 Hgh accuracy (Whte Rabbt) allows a ew ns () Optcal Tme Transer (OTT) allows a ew 00ps 7
8 PRTCs Tme/Phase montorng based on (e.g., GPS) Common-vew technque Satellte S e.g., GPS( ) Ionosphere Propagaton delay Troposphere Cloc A SA Data low SB Cloc B Propagaton delay 000m Tme error TE A Earth Tme error TE B () GPS eprtc B GPS UTC SA Natonal Tme and Frequency Standard Lab. SB eprtc locates n Core Center() K=,,3,---N The nal measurement result s: ( UTC(*) eprtc ( B )) ( SA SB ) Tme /phase doman 8
9 9 ε n c c T I L ε n c c T I L c c T I P c c T I P The code and phase models are descrbed as ollows: ) ( 3 P P P ) ( 3 L L L The onosphere-ree P code P 3 and carrer phase L 3 are modeled as: Code and Phase models
10 Global Navgaton Satelltes System e.g., GPS( ) S e.g., GPS( l) UTC(TL) Carrer OSS(s) e.g., eprtc/prtc pps UTC(TL) Common-vew servce OSS Natonal Tme and Frequency Standard Lab. UTC(*) A Data nput Common-vew Engne TE A eprc(cs) 0MHz B eprtc Remote CalbratonCore Center (-) pps PTP over Ethernet Common-vew Engne TE( B K ) TE( BK ) eprc(cs) 0MHz B eprtc Remote Calbraton Core Center () pps PTP over Ethernet Common-vew Engne The conguraton o (e.g., GPS) common-vew servces deployment n the networ, where A ste locates n Natonal Tme and Frequency Standard Lab. and B stes locate n core centers n carrer networ GPS: Global Postonng System OSS: Operatons support systems 0
11 Setup or testng eprtc eprtc(dut)
12 Warmup Test o eprtc UTC(TL)-ePRTC-ns * UTC-UTC(TL) 5 0 *4.7ns *3.7ns
13 Measurement results (UTC(TL)-ePRTC)+K 3
14 eprtc stablty: MTIE 4
15 eprtc stablty: TDEV 5
16 eprtc Tme Holdover 6
17 Conclusons The analytcal results justy the common-vew technque oers a eectve perormance montorng schemes or eprtcs-cloud n synchronzaton networ the remote calbraton scheme elmnates the constant tme error (cable delay compensaton) generated n eprtc mnmze the tme error generated by eprtc Expectably, the common-vew servce wll be wdely used n synchronzaton networ n the carrers or 4G (e.g., LTE-A), the comng uture 5G, and the Deense Oce Department (DoD) n a country to secure tme 7
Enhanced PRTC G GNSS and Atomic Clocks Combined
Power Matters. Enhanced PRTC G.8272.1 GNSS and Atomic Clocks Combined Lee Cosart lee.cosart@microsemi.com ITSF 2017 Outline Background and history What/Why eprtc History: PRC to PRTC to eprtc eprtc G.8271.2
More informationEnhanced Primary Clocks and Time Transfer
Deutsche Telekom Enhanced Primary Clocks and Time Transfer Helmut Imlau ITSF 2017, November 8 th ITSF 2017: Enhanced Primary Clocks and Time Transfer, Deutsche Telekom, Helmut Imlau 1 Agenda (a) Enhanced
More informationEnsuring Robust Precision Time: Hardened GNSS, Multiband, and Atomic Clocks. Lee Cosart WSTS 2018
Power Matters. Ensuring Robust Precision Time: Hardened GNSS, Multiband, and Atomic Clocks Lee Cosart lee.cosart@microsemi.com WSTS 2018 Outline Introduction The Challenge Time requirements increasingly
More informationtime sync in ITU-T Q13/15: G.8271 and G
time sync in ITU-T Q13/15: G.8271 and G.8271.1 ITSF - 2012, Nice Stefano Ruffini, Ericsson Time Synchronization: Scope and Plans The work recently started in ITU-T Q13/15 The following main aspects need
More informationITU-T G.8272/Y.1367 (01/2015) Timing characteristics of primary reference time clocks
I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.8272/Y.1367 (01/2015) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS
More informationNMI's Role and Expertise in Synchronization Applications
NMI's Role and Expertise in Synchronization Applications Wen-Hung Tseng National Time and Frequency standard Lab, Telecommunication Laboratories, Chunghwa Telecom Co., Ltd., Taiwan APMP 2014 Time-transfer
More informationGNSS in Cadastral Surveying: State of the Art and future perspectives in the framework of Galileo
Presented at the FIG Congress 2018, May 6-11, 2018 n Istanbul, Turkey GNSS n Cadastral Surveyng: State o the Art and uture perspectves n the ramework o Galleo R. Capua Motvaton o the Study Cadastral surveyng
More informationMeasuring Time Error. Tommy Cook, CEO.
Measuring Time Error Tommy Cook, CEO www.calnexsol.com Presentation overview What is Time Error? Network devices. PRTC & Grand Master Clock Evaluation. Transparent Clock Evaluation. Boundary Clock Evaluation.
More informationNovel Techniques of RF High Power Measurement
Novel Technques o RF Hgh Power Measurement Ovdu D. Stan Department o Electrcal and Computer Engneerng COLORADO STATE UNIVERSITY EE PhD Dssertaton Deense 2007 Why s RF Hgh Power Measurement s Important?
More informationOptical Time Transfer (OTT): PoC Results and Next Steps
AGH University of Science and Technology Department of Electronics, Krakow, Poland Physikalisch-Technische Bundesanstalt (PTB) Braunschweig, Germany Deutsche Telekom Technik GmbH Bremen, Germany Deutsche
More informationITU-T G /Y
I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.8273.2/Y.1368.2 (01/2017) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL
More informationThe all-in-one field sync tester
Calnex Sentinel The all-in-one field sync tester for 3G/4G/5G Mobile Backhaul, Financial Networks and Power Comms Platform Highlights PTP, NTP, SyncE and TDM in one box Allows you to test all legacy and
More informationPerformance Testing of the Rockwell PLGR+ 96 P/Y Code GPS receiver
Performance Testng of the Rockwell PLGR+ 96 P/Y Code GPS recever By Santago Mancebo and Ken Chamberlan Introducton: The Rockwell PLGR (Precson Lghtweght GPS Recever) + 96 s a Precse Postonng Servce P/Y
More informationDIMENSIONAL INSPECTION OF SAMPLES IN THE NANOMETER SCALE BY MEANS OF THE SUPERCONTINUUM LIGHT
DIMENSIONAL INSPECTION OF SAMPLES IN THE NANOMETER SCALE BY MEANS OF THE SUPERCONTINUUM LIGHT Ondřej ČÍP, Radek ŠMÍD, Břetslav MIKEL, Martn ČÍŽEK, Bohdan RŮŽIČKA and Jose LAZAR Insttute o Scentc Instruments,
More informationAssisted Partial Timing Support The Principles
Assisted Partial Timing Support The Principles ITSF 2014, Budapest Time to Apply Kishan Shenoi (kshenoi@qulsar.com) Qulsar, Inc., San Jose, California Outline Background Wireless base-station timing (frequency
More informationFiber Optic Time Transfer for UTC-Traceable Synchronization for Telecom Networks
SYNCHRONIZATION STANDARDS TOWARDS 5G Fiber Optic Time Transfer for UTC-Traceable Synchronization for Telecom Networks Łukasz Śliwczyński, Przemysław Krehlik, Jacek Kołodziej, Helmut Imlau, Horst Ender,
More informationTotal Electron Content (TEC) and Estimation of Positioning Error Using Malaysia Data
Proceedngs o the World Congress on Engneerng 00 Vol I WCE 00, June 0 - July, 00, London, U.K. Total Electron Content (TEC) and Estmaton o Postonng Error Usng Malaysa Data Y. Norsuzla, M. Abdullah, M. Ismal,
More informationPower Matters. Time Interfaces. Adam Wertheimer Applications Engineer. 03 November Microsemi Corporation.
Power Matters Time Interfaces Adam Wertheimer Applications Engineer 03 November 2011 2011 Microsemi Corporation. Why do we need time? What time is it? It is 11:53 AM on the third of November 2011. High
More information熊本大学学術リポジトリ. Kumamoto University Repositor
熊本大学学術リポジトリ Kumamoto Unversty Repostor Ttle Wreless LAN Based Indoor Poston and Its Smulaton Author(s) Ktasuka, Teruak; Nakansh, Tsune CtatonIEEE Pacfc RIM Conference on Comm Computers, and Sgnal Processng
More informationCan Constant Time Error (cte) be Measured? A Practical Approach to Understanding TE = cte + dte
SYNC SERIES Can Constant Time Error (cte) be Measured? A Practical Approach to Understanding TE = cte + dte By Ildefonso M. Polo Dir. Product Marketing Transport & Synchronization December 2016 Rev. A00
More informationTests using Paragon-X, courtesy of
Tests using Paragon-X, courtesy of Maciej Lipinski / CERN 2015-02-27 1 1. Introduction The goal of the exercise was to compare syntonization performance of White Rabbit (WR) switch with the syntonization
More informationCoherent Network Primary Reference Time Clocks (cnprtc) Simulation and Test Results. George Zampetti, Chief Scientist FTD
Power Matters. Coherent Network Primary Reference Time Clocks (cnprtc) Simulation and Test Results George Zampetti, Chief Scientist FTD 1 Coherent Network PRTC Overview Primary Objectives Reliability:
More informationSection 5. Signal Conditioning and Data Analysis
Secton 5 Sgnal Condtonng and Data Analyss 6/27/2017 Engneerng Measurements 5 1 Common Input Sgnals 6/27/2017 Engneerng Measurements 5 2 1 Analog vs. Dgtal Sgnals 6/27/2017 Engneerng Measurements 5 3 Current
More informationAssisted Partial Timing Support Metrics
Assisted Partial Timing Support Metrics ITSF 2014, Budapest Time in Distribution, Performance & Measurement Kishan Shenoi (kshenoi@qulsar.com) Qulsar, Inc., San Jose, California Outline Principal concept
More informationReport of the IGS Clock Products Working Group
Report of the IGS Clock Products Workng Group Ken Senor U.S. Naval Research Laboratory (NRL) Ken.Senor@nrl.navy.ml 17 th meetng of the Consultatve Commttee on Tme & Frequency 14 15 September 2006 Bureau
More informationOscillator Impact on PDV and Design of Packet Equipment Clocks. ITSF 2010 Peter Meyer
Oscillator Impact on PDV and Design of Packet Equipment Clocks ITSF 2010 Peter Meyer peter.meyer@zarlink.com Protocol Layer Synchronization When deployed and inter-connected within the packet network the
More informationBusiness Opportunity. The wave is coming. The Opportunity. Time Synchronization as a first-order concept You take care of it, or you will pay for it!
Business Opportunity. The wave is coming. The Opportunity Time Synchronization as a first-order concept You take care of it, or you will pay for it! www.sevensols.com Seven Solutions - When every nanosecond
More informationPORTABLE JAMMER COUNTER-MEASURE SOLUTIONS
AARONIA AARTOS PORTABLE JAMMER COUNTER-MEASURE SOLUTIONS Backpack jammng system wth 120 W output power and up to 2,5 km range Hghlghts: Up to 120 W output power Hgh range of up to 2,5 km Covers 5 frequency
More informationA COMPAROTIVE STUDY OF GPS P3 AND GPS L3
A COMPAROTIVE STUDY OF GPS P3 AND GPS L3 Gun Li 1 2 Bian Li 1 2 Shao-Wu DONG 1 1 Natal Time Service Center Chinese Academy o Sciences 3 Eastern Road o Lintong Reg Xi an Shaanxi 710600 CHINA 2 Graduate
More informationThe all-in-one field sync tester
Calnex Sentinel The all-in-one field sync tester for 4G and 3G Mobile Backhaul, Financial Networks and Power Comms Platform Highlights PTP, NTP, SyncE and TDM in one box Allows you to test all legacy and
More informationEfficient Large Integers Arithmetic by Adopting Squaring and Complement Recoding Techniques
The th Worshop on Combnatoral Mathematcs and Computaton Theory Effcent Large Integers Arthmetc by Adoptng Squarng and Complement Recodng Technques Cha-Long Wu*, Der-Chyuan Lou, and Te-Jen Chang *Department
More informationMONITORING THE REMOTE PRIMARY CLOCK BY USING GPS CARRIER PHASE
33rdAnnual Precise Time and Time lnterval (Pl'Tl)Meeting MONTORNG THE REMOTE PRMARY CLOCK BY USNG GPS CARRER PHASE S.-S. Chen', He-MPeng', and C.-S. Liao' 1. Associate Researcher, National Standard Time
More informationSynchronization Requirements of 5G and Corresponding Solutions. Dr. Han Li, China Mobile San Jose,
Synchronization Requirements of 5G and Corresponding Solutions Dr. Han Li, China Mobile San Jose, 2017.4 Outline Overview of China Mobile PTP network 5G Backhaul/Fronthaularchitecture and Synchronization
More informationUncertainty in measurements of power and energy on power networks
Uncertanty n measurements of power and energy on power networks E. Manov, N. Kolev Department of Measurement and Instrumentaton, Techncal Unversty Sofa, bul. Klment Ohrdsk No8, bl., 000 Sofa, Bulgara Tel./fax:
More informationFundamentals of Precision Time Protocol. Rudy Klecka Cisco Systems. October 14, 2015
Fundamentals of Precision Time Protocol Rudy Klecka Cisco Systems October 14, 2015 Abstract This session will provide a general background on IEEE 1588 Precision Time Protocol (PTP), how it works, some
More informationGPS & other Radio Time sources
GPS & other Radio Time sources Anthony Flavin, MIET Chronos Technology Ltd Wireless Heritage SIG Time for Telecoms British Science Museum Friday 16th April 2018 Chronos Technology: COMPANY PROPRIETARY
More informationWide-Area Time Distribution with PTP Using Commercial Telecom Optical Fiber
Wide-Area Time Distribution with Using Commercial Telecom Optical Fiber NASPI Work Group Meeting March 22, 2017 Lee Cosart, lee.cosart@microsemi.com Microsemi Corporation Presenter, Co-author Marc Weiss,
More informationHigh Speed, Low Power And Area Efficient Carry-Select Adder
Internatonal Journal of Scence, Engneerng and Technology Research (IJSETR), Volume 5, Issue 3, March 2016 Hgh Speed, Low Power And Area Effcent Carry-Select Adder Nelant Harsh M.tech.VLSI Desgn Electroncs
More informationPPS Positioning in Weak Signal GPS Environments using a TIDGET Sensor
PPS Postonng n Weak Sgnal GPS Envronments usng a TIDGET Sensor Alson K. Brown, Stephen Stankevch, and Bruce G. Johnson, NAVSYS Corporaton BIOGRAPHY Alson Brown s the Presdent and Chef Executve Offcer of
More informationCURRENT ACTIVITIES OF THE NATIONAL STANDARD TIME AND FREQUENCY LABORATORY OF THE TELECOMMUNICATION LABORATORIES, CHT TELECOM CO., LTD.
CURRENT ACTIVITIES OF THE NATIONAL STANDARD TIME AND FREQUENCY LABORATORY OF THE TELECOMMUNICATION LABORATORIES, CHT TELECOM CO., LTD., TAIWAN C. S. Liao, P. C. Chang, and S. S. Chen National Standard
More informationDraft Amendment 1 to Recommendation G.8271 draft for consent
INTERNATIONAL TELECOMMUNICATION UNION TELECOMMUNICATION STANDARDIZATION SECTOR STUDY PERIOD 2017-2020 STUDY GROUP 15 Original: English Question(s): 13/15 Geneva, 19 30 June, 2017 Source: Editor, G.8271
More informationThe Performance Improvement of BASK System for Giga-Bit MODEM Using the Fuzzy System
Int. J. Communcatons, Network and System Scences, 10, 3, 1-5 do:10.36/jcns.10.358 Publshed Onlne May 10 (http://www.scrp.org/journal/jcns/) The Performance Improvement of BASK System for Gga-Bt MODEM Usng
More informationRaltron Electronics IEEE-1588 Products Overview
Raltron Electronics IEEE-1588 Products Overview 2013 Raltron Electronics Founded in 1983. Headquartered in Miami, Florida. Designs, manufactures and distributes frequency management products including:
More informationA GBAS Testbed to Support New Monitoring Algorithms Development for CAT III Precision Approach
A GBAS Testbed to Support New Montorng Algorthms Development for CAT III Precson Approach B. Belabbas, T. Dautermann, M. Felux, M. Rppl, S. Schlüter, V. Wlken, A. Hornbostel, M. Meurer German Aerospace
More informationTime Syntonization and Frequency Stabilizing Using GPS Carrier Phase with Extension Controller
WEA TANACTION on ELECTONIC Manuscript received Apr. 25, 2007; revised July 14, 2007 Guo-hing Huang Time yntonization and Frequency tabilizing Using GP Carrier Phase with Extension Controller GUO-HING HUANG
More informationPoint Real-Time Kinematic Positioning
Pont Real-Tme Knematc Postonng Y. Gao, M. Abdel-Salam, K. Chen and A. Wojcechowsk Department of Geomatcs Engneerng 5 Unversty Drve N.W., Calgary, Alberta, Canada TN N4 Abstract. Autonomous pont postonng
More informationAFV-P 2U/4U. AC + DC Power Solutions. series. Transient Generation for Disturbance Tests. only. High Performance Programmable AC Power Source
AFV-P seres Hgh Performance Programmable AC Power Source only 2U/4U Intutve Touch Screen HMI Output Frequency up to 15-1000Hz Power Lne Smulatons: Step & Ramp Features Fast Response Tme: 300μs AC Source
More informationTopology Control for C-RAN Architecture Based on Complex Network
Topology Control for C-RAN Archtecture Based on Complex Network Zhanun Lu, Yung He, Yunpeng L, Zhaoy L, Ka Dng Chongqng key laboratory of moble communcatons technology Chongqng unversty of post and telecommuncaton
More informationDigital GPS Repeaters for Wireless Network Timing
Whitepaper Digital GPS Repeaters for Wireless Network Timing David Cheskis Vice President of Product Management, Microlab Abstract Modern wireless telecommunications networks rely on accurate frequency
More informationAnalysis of Clock Synchronization Approaches for Residential Ethernet
Analyss of Clock Synchronzaton Approaches for Resdental Ethernet Geoffrey M. Garner Kees den Hollander SAIT / SAMSUNG Electroncs gmgarner@comcast.net denhollander.c.j@samsung.com 5 Conference on IEEE 1588
More informationSynchronization System Performance Benefits of Precision MEMS TCXOs under Environmental Stress Conditions
Synchronization System Performance Benefits of Precision The need for synchronization, one of the key mechanisms required by telecommunication systems, emerged with the introduction of digital communication
More informationA Simple Satellite Exclusion Algorithm for Advanced RAIM
A Smple Satellte Excluson Algorthm for Advanced RAIM Juan Blanch, Todd Walter, Per Enge Stanford Unversty ABSTRACT Advanced Recever Autonomous Integrty Montorng s a concept that extends RAIM to mult-constellaton
More informationNeural-MOS Threshold Gate as a Way to Design On-Chip Learning Neuron Structures
Neural-MOS Threshold Gate as a Way to Desgn On-Chp Learnng Neuron Structures RAFAIL LASHESKY Hardware Department The Unversty o Azu 965-8580 JAPAN Abstract: - Hardware mplementaton o artcal neuron networs
More informationSatellite Attitude Determination Using GPS Receiver Based on Wahba Cost Function
5 th SASech 0, Khavaran Hgher-educaton Insttute, Mashhad, Iran. May -4. Satellte Atttude Determnaton Usng GPS Recever Based on Wahba Cost Functon Asghar Ebrahm, Malek Ashtar Unv. of ech., ehran, Iran Emal:
More informationAd hoc Service Grid A Self-Organizing Infrastructure for Mobile Commerce
Ad hoc Servce Grd A Self-Organzng Infrastructure for Moble Commerce Klaus Herrmann, Kurt Gehs, Gero Mühl Berln Unversty of Technology Emal: klaus.herrmann@acm.org Web: http://www.vs.tu-berln.de/herrmann/
More informationMTBF PREDICTION REPORT
MTBF PREDICTION REPORT PRODUCT NAME: BLE112-A-V2 Issued date: 01-23-2015 Rev:1.0 Copyrght@2015 Bluegga Technologes. All rghts reserved. 1 MTBF PREDICTION REPORT... 1 PRODUCT NAME: BLE112-A-V2... 1 1.0
More informationITU-T O.172. Amendment 1 (06/2008)
Internatonal Telecommuncaton Unon ITU-T O.72 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment (6/8) SERIES O: SPECIFICATIONS OF MEASURING EQUIPMENT Equpment for the measurement of dgtal and analogue/dgtal
More informationBit Error Probability of Cooperative Diversity for M-ary QAM OFDM-based system with Best Relay Selection
011 Internatonal Conerence on Inormaton and Electroncs Engneerng IPCSIT vol.6 (011) (011) IACSIT Press, Sngapore Bt Error Proalty o Cooperatve Dversty or M-ary QAM OFDM-ased system wth Best Relay Selecton
More informationWhite Rabbit in Time & Frequency Metrology
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD White Rabbit in Time & Frequency Metrology Anders Wallin White Rabbit Workshop 2016-03-15, Amsterdam Long(est?) WR link Fiber asymmetry and calibration Stability
More informationBeam quality measurements with Shack-Hartmann wavefront sensor and M2-sensor: comparison of two methods
Beam qualty measurements wth Shack-Hartmann wavefront sensor and M-sensor: comparson of two methods J.V.Sheldakova, A.V.Kudryashov, V.Y.Zavalova, T.Y.Cherezova* Moscow State Open Unversty, Adaptve Optcs
More informationDemand Side Management using DLC Communication. i I
Demand Sde Management usng DLC Communcaton Abstract: Stadtwerke Dusseldorf AG (Germany) wth approx. 400'000 consumers has decded to mplement a program for Demand Sde Management (DSM) usng ther low voltage
More informationANNA UNIVERSITY, CHENNAI OFFICE OF THE ADDITIONAL CONTROLLER OF EXAMINATIONS
20-MAR-17 21-MAR-17 22-MAR-17 Page 1 of 6 MADRAS NSTTUTE OF TECHNOLOGY-CHROMEPET AUTOMOBLE ANNA UNVERSTY, CHENNA - 600 025 OFFCE OF THE ADDTONAL CONTROLLER OF EXAMNATONS [ UNVERSTY DEPARTMENTS ] B.E /
More informationA High-Sensitivity Oversampling Digital Signal Detection Technique for CMOS Image Sensors Using Non-destructive Intermediate High-Speed Readout Mode
A Hgh-Senstvty Oversamplng Dgtal Sgnal Detecton Technque for CMOS Image Sensors Usng Non-destructve Intermedate Hgh-Speed Readout Mode Shoj Kawahto*, Nobuhro Kawa** and Yoshak Tadokoro** *Research Insttute
More informationOptimizing a System of Threshold-based Sensors with Application to Biosurveillance
Optmzng a System of Threshold-based Sensors wth Applcaton to Bosurvellance Ronald D. Frcker, Jr. Thrd Annual Quanttatve Methods n Defense and Natonal Securty Conference May 28, 2008 What s Bosurvellance?
More informationCustomer witness testing guide
Customer wtness testng gude Ths gude s amed at explanng why we need to wtness test equpment whch s beng connected to our network, what we actually do when we complete ths testng, and what you can do to
More informationBlack Swans, White Elephants and Delivering a New National Timescale with eloran
Black Swans, White Elephants and Delivering a New National Timescale with eloran Charles Curry BEng, CEng, FIET Managing Director Chronos Technology Ltd SFR, Paris 18 th July 2014 PNT First Experiences
More informationThe FEI-Zyfer Family of Modular, GPS-Aided Time & Frequency Systems
The FEI-Zyfer Family of Modular, GPS-Aided Time & Systems Multiple Capabilities Easily Configured High Performance Flexible, Expandable, Upgradable Redundant & Reliable Hot- Swappable Easily Maintainable
More informationTime & Frequency Transfer
Cold Atoms and Molecules & Applications in Metrology 16-21 March 2015, Carthage, Tunisia Time & Frequency Transfer Noël Dimarcq SYRTE Systèmes de Référence Temps-Espace, Paris Thanks to Anne Amy-Klein
More informationREPORT OF TIME AND FREQUENCY LABORATORY (VIETNAM METROLOGY INSTITUTE)
Nguyen Bang Head of Time and Frequency Laboratory (TFL) Vietnam Metrology Institute (VMI) N 0 8, Hoang Quoc Viet Road, Caugiay District, Hanoi, Vietnam About Time & Frequency Laboratory (TFL) Time and
More informationHow to Get Started with Virtual Goalie
How to Get Started wth Vrtual Goale HTC VIVE Set up your computer and moble devce Acqure a vrtual realty-enabled computer and the HTC Vve. For hardware specs, to test your computer, or to order from Amazon,
More informationCalculation of the received voltage due to the radiation from multiple co-frequency sources
Rec. ITU-R SM.1271-0 1 RECOMMENDATION ITU-R SM.1271-0 * EFFICIENT SPECTRUM UTILIZATION USING PROBABILISTIC METHODS Rec. ITU-R SM.1271 (1997) The ITU Radocommuncaton Assembly, consderng a) that communcatons
More informationAd hoc Service Grid A Self-Organizing Infrastructure for Mobile Commerce
Ad hoc Servce Grd A Self-Organzng Infrastructure for Moble Commerce Klaus Herrmann Berln Unversty of Technology Emal: klaus.herrmann@acm.org Web: http://www.vs.tu-berln.de/herrmann/ PTB-Semnar, 3./4. November
More informationA Pervasive Indoor-Outdoor Positioning System
70 JOURNAL OF NETWORKS, VOL. 3, NO. 8, NOVEMBER 008 A Pervasve Indoor-Outdoor Postonng System Lonel Reyero 1, Glles Delsle 1 INRS-EMT, Unversté du Québec, Montréal, Canada, H5A 1K6, lonel.reyero@telecom.com
More informationWhen paired with a compliant TCXO or OCXO, the Si5328 fully meets the requirements set forth in G.8262/Y ( SyncE ), as shown in Table 1.
Si5328: SYNCHRONOUS ETHERNET* COMPLIANCE TEST REPORT 1. Introduction Synchronous Ethernet (SyncE) is a key solution used to distribute Stratum 1 traceable frequency synchronization over packet networks,
More informationIntroduction. Time Alignment Background in Wireless Infrastructure. AN-1031 Application Note
Alignment Background in Wireless Infrastructure AN-1031 Application Note Introduction This Application Note is one of a series addressing different aspects of an emerging networking usage model for wireless
More informationApplication of Intelligent Voltage Control System to Korean Power Systems
Applcaton of Intellgent Voltage Control System to Korean Power Systems WonKun Yu a,1 and HeungJae Lee b, *,2 a Department of Power System, Seol Unversty, South Korea. b Department of Power System, Kwangwoon
More informationECC Report Practical guidance for TDD networks synchronisation
ECC Report 21 6 Practical guidance for TDD networks synchronisation August 2014 ECC REPORT 216 - Page 2 0 EXECUTIVE SUMMARY When more than one TDD network operates in the same geographic area and in the
More informationTCG 02-G FULL FEATURED SATELLITE CLOCK KEY FEATURES SUPPORTS
FULL FEATURED SATELLITE CLOCK TCG 02-G The TCG 02-G is a highly accurate, full featured GPS and GLONASS (GNSS) clock. Offering multiple oscillator options, Time Code and Frequency outputs, it fits virtually
More informationTraceability measurement results of accurate time and frequency in Bosnia and Herzegovina
INFOTEH-JAHORINA Vol. 11, March 2012. Traceability measurement results of accurate time and frequency in Bosnia and Herzegovina Osman Šibonjić, Vladimir Milojević, Fatima Spahić Institute of Metrology
More informationCoverage of Hybrid Terrestrial-Satellite Location in Mobile Communications
Coverage of Hybrd Terrestral-Satellte ocaton n Moble Communcatons Francsco Barceló, Israel Martín-Escalona Dept. d Engnyera Telemàtca de la Unverstat Poltècnca de Catalunya c/ Jord Grona 1-3, Barcelona
More informationACES ELT laser link performance and ps accuracy optical time transfer
ACES ELT laser link performance and ps accuracy optical time transfer Ivan Prochazka1 Luigi Cacciapuoti2, Ulrich Schreiber3, Wolfgang Schäfer4 Presented at the Conference From Quantum to Cosmos, Universite
More informationANALYSIS OF ONE YEAR OF ZERO-BASELINE GPS COMMON-VIEW TIME TRANSFER AND DIRECT MEASUREMENT USING TWO CO-LOCATED CLOCKS
ANALYSIS OF ONE YEAR OF ZERO-BASELINE GPS COMMON-VIEW TIME TRANSFER AND DIRECT MEASUREMENT USING TWO CO-LOCATED CLOCKS Gerrit de Jong and Erik Kroon NMi Van Swinden Laboratorium P.O. Box 654, 2600 AR Delft,
More informationNATIONAL RADIO ASTRONOMY OBSERVATORY Green Bank, West Virginia SPECTRAL PROCESSOR MEMO NO. 25. MEMORANDUM February 13, 1985
NATONAL RADO ASTRONOMY OBSERVATORY Green Bank, West Vrgna SPECTRAL PROCESSOR MEMO NO. 25 MEMORANDUM February 13, 1985 To: Spectral Processor Group From: R. Fsher Subj: Some Experments wth an nteger FFT
More informationPerformance Analysis of Power Line Communication Using DS-CDMA Technique with Adaptive Laguerre Filters
Internatonal Conference on Informaton and Electroncs Engneerng IPCSIT vol.6 ( ( IACSIT Press, Sngapore Performance Analyss of Power Lne Communcaton Usng DS-CDMA Technque wth Adaptve Laguerre Flters S.
More informationCELL SEARCH ROBUST TO INITIAL FREQUENCY OFFSET IN WCDMA SYSTEMS
CELL EARCH ROBUT TO INITIAL FREQUENCY OFFET IN WCDMA YTEM June Moon and Yong-Hwan Lee chool of Electrcal Engneerng eoul Natonal Unversty an 56-, hllmdong, Kwanak-Ku, 5-74, eoul, Korea ylee@snu.ac.kr Abstract
More informationCommon Public Radio Interface. CPRI overview Input requirements for CPRI
Common Public Radio Interface CPRI overview Input requirements for CPRI 11-Mar-2015 1 Some history Industrial cooperation jointly created by 5 parties: Ericsson, Huawei, NEC, Nortel Networks, Siemens Mobile
More informationRevision of Lecture Twenty-One
Revson of Lecture Twenty-One FFT / IFFT most wdely found operatons n communcaton systems Important to know what are gong on nsde a FFT / IFFT algorthm Wth the ad of FFT / IFFT, ths lecture looks nto OFDM
More informationCONCERNING THE NO LOAD HIGH VOLTAGE TRANSFORMERS DISCONNECTING
CONCERNING THE NO LOAD HIGH VOLTAGE TRANSFORMERS DISCONNEING Mara D Brojbou and Vrgna I Ivanov Faculty o Electrcal engneerng Unversty o Craova, 7 Decebal Blv, Craova, Romana E-mal: mbrojbou@elthucvro,
More informationImpact of Interference Model on Capacity in CDMA Cellular Networks. Robert Akl, D.Sc. Asad Parvez University of North Texas
Impact of Interference Model on Capacty n CDMA Cellular Networks Robert Akl, D.Sc. Asad Parvez Unversty of North Texas Outlne Introducton to CDMA networks Average nterference model Actual nterference model
More informationOptimal State Prediction for Feedback-Based QoS Adaptations
Optmal State Predcton for Feedback-Based QoS Adaptatons Baochun L, Dongyan Xu, Klara Nahrstedt Department of Computer Scence Unversty of Illnos at Urbana-Champagn b-l, d-xu, klara @cs.uuc.edu Abstract
More informationAccelerating-Power Based Power System Stabilizers
Acceleratng-Power Based Power System Stablzers G.R. Bérubé, L.. Hajagos, embers Kestrel Power Engneerng Ltd. ssssauga, Ontaro, Canada Abstract: Ths paper provdes an overvew of the key features of the acceleratng
More information1.0 INTRODUCTION 2.0 CELLULAR POSITIONING WITH DATABASE CORRELATION
An Improved Cellular postonng technque based on Database Correlaton B D S Lakmal 1, S A D Das 2 Department of Electronc & Telecommuncaton Engneerng, Unversty of Moratuwa. { 1 shashka, 2 dleeka}@ent.mrt.ac.lk
More informationUniversal-Filtered Multi-Carrier Technique for Wireless Systems Beyond LTE
Globecom 203 Workshop - Broadband Wreless Access Unversal-Fltered Mult-Carrer Technque or Wreless Systems Beyond LTE Vda Vaklan, Thorsten Wld, Frank Schach, Stephan ten Brnk, Jean-Franços Frgon École Polytechnque
More informationSolving Continuous Action/State Problem in Q-Learning Using Extended Rule Based Fuzzy Inference Systems
7 ICASE: The Insttute o Control, Automaton and Systems Engneers, KOREA Vol., No., September, Solvng Contnuous Acton/State Problem n Q-Learnng Usng Extended Rule Based Fuzzy Inerence Systems Mn-Soeng Km
More informationTCG 02-G FULL FEATURED SATELLITE CLOCK KEY FEATURES SUPPORTS
FULL FEATURED SATELLITE CLOCK TCG 02-G The TCG 02-G is a highly accurate, full featured GPS and GLONASS (GNSS) clock. Offering multiple oscillator options, Time Code and Frequency outputs, it fits virtually
More informationA Business Case for Employing Direct RF Transmission over Optical Fiber In Place of CPRI for 4G and 5G Fronthaul
A Business Case for Employing Direct RF Transmission over Optical Fiber In Place of CPRI for 4G and 5G Fronthaul Presented by APIC Corporation 5800 Uplander Way Culver City, CA 90230 www.apichip.com sales@apichip.com
More informationto an estimated 60 years.
NETWOKK TMNG EQUPMENT FOR SYNCHRONOUS DGTAL TELECOMMUNCATON Philippe ~irardet, Pascal Rochat and Erhard Graf, OsciLloquartz S.A., Brevards 16, Neuchatel, Switzerland ABSTRACT A new equipment for digital
More informationGPS Multipath Change Detection in Permanent GPS Stations
GPS Multpath Change Detecton n Permanent GPS Statons Lnln Ge, Shaowe Han, and Chrs Rzos School of Geomatc Engneerng The Unversty of New South Wales Sydney, NSW 2052, AUSTRALIA Yuk Hatanaka Geographcal
More informationExpert Site Visit Report
Expert Site Visit Report Time and Frequency Metrology Sub Division Research Center for Metrology Indonesian Institute of Sciences RCM LIPI Metrology Enabling Developing Economies in Asia, MEDEA Project
More informationTiming over packet networks
Timing over packet networks real solutions to real problems February 2010 Presented by: Yaakov Stein Chief Scientist What is this talk about? About 30 minutes but how do we know how much time 30 minutes
More information