Advanced Technologies for Multimedia Broadband Satellites Systems
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1 Internatinal Telecmmunicatin Unin Advanced Technlgies fr Multimedia Bradband Satellites Systems Dr Satchandi Verma Space & Electrnics Cmmunicatin Satellite Business Develpment One Space Park, Rednd Beach, CA Wrkshp n Satellites in IP and Multimedia Geneva, 9-11 December 2002
2 Advanced Technlgies fr Multimedia Bradband Satellites Systems Bradband Satellite Market Satellite Industry Trend s Systems Engineering Prcess Multimedia Satellite Systems Capabilities Satellite System Enabling Technlgies Advanced Antenna Systems High gain Multi Beam Antenna (MBA) Mesh Reflectr Satellite System Shaped and Spt Beam Cverage Efficient satellite link frequency utilizatin Higher perating link frequencies Multi clr frequency reuse Digital Transpnders Applicatins and Advantages Satellite Perfrmance/Capacity Multimedia Satellite Key Drivers Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
3 Bradband Satellite Industry Market Tday s Market Current system architectures successfully serving Bradcasting Market Inability t capture netwrk based bradband service market Inability t attract financial capital Cmmdity Services Evlutinary Vs Value added satellite technlgy Excess capacity in sme markets Near Future Satellite Industry cnslidatin Expansin f Glbal Cverage Data Transprt systems with Bradband Intercnnectivity Gvernment need fr bradband packet switched netwrks Within a Decade New netwrked satellites with value added services New Service Offerings Expandable Cntent-Based Netwrks Ubiquitus Infrmatin n Demand Bradband Satellite Industry in Transfrmatin stage Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
4 Bradband Satellite Industry Trend In US Gvernment spnsred effrts may lead t the Multimedia satellite architecture Natinal Rural Telecmmunicatin Cperative (NRTC) Transfrmatinal Cmmunicatin Study (TCS) Office f the Secretary f Defense (OSD) Service prvider Strategies Initiate netwrk based satellite fleets which increase the value f service fferings t infrmatin intensive markets Team with suppliers fr develping business based satellite slutin Develp lng range transfrmatinal architectures satisfying Glbal trends and emerging custmer markets Develp regulatry strategies fr satellite netwrk peratin Pull satellite technlgy frm prven manufacturers Fr applicatin t infrmatin intensive satellite designs Prviding ecnmical cst effective slutin fr bradband multimedia satellite systems Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
5 s Systems Engineering Prcess Bradband Satellite Services Needs (Gvernment, Cmmercial) Marketing Plan (Netwrk Opprtunities, Service Prvider Strategy) Satellite System Trades (Netwrk Access, Management, Inter-wrking, Cmmunicatin Links) Marketing Addressable Market Market Penetratin Service Definitin Traffic Mdel Design System Architecture Capability Analysis Service Capabilities System Cst Cash Flw Finance Netwrk Architecture $ Time Revenue Prjectins Cst f Capital Negative Cash Flw Break-even Pint Bringing Marketing, Engineering, & Financial disciplines tgether t achieve a successful business plan Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
6 Enabling Satellites Technlgies Expert Systems Engineering Supprt System definitin, analyses and trades fr ptimum Netwrk End-t-end cmmunicatin system simulatin capability Rigrus requirements definitin t include all system needs Expert advice n internatinal standards implementatin Satellite Antenna Deplyable Large Mesh Reflectr Antenna (Shaped/Spt beams) High Gain Slid Reflectr Antenna (Multi Beam Spt Cverage) Satellite link frequencies Higher up and dwn link frequencies Frequency Reuse with Multi clr schemes On Bard Prcessrs (Analg/Digital) Full Digital Prcessr Partial Prcessr Digital Transpnders Larger satellite antenna gain reduces paylad pwer requirement and size (RF pwer, slar cells, thermal dissipatin) Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
7 Has a Lng Histry f Satellite Cmmunicatins Systems Defense Systems Cmmunicatins Satellite II Milstar Paylads Advanced EHF Fleet Satellite Cmmunicatins INTELSAT III Tracking and Data Relay Satellites Landsat 4 Dwnlink Astrlink (type) Ka Bradband Over three decades f prviding increasing SATCOM capabilities Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December 2002
8 Technlgy Enables Cst Effective Architectures Flexible cverage Mre capacity in Frequency re-use same size and mass Cmm-n-the-mve envelpe Advanced Antennas Mre capacity per kg r W Flexible Services On-rbit prgrammability Highly Integrated RF Cmpnents Wideband Datalinks Flexible Digital Prcessrs & Sftware Single Chip Cmputers Lasercm Mega Gate ASICs 480-Msps, 10-bit ADC Dense Memry Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
9 Multimedia Satellites System Requirements Larger System Capacity Higher Netwrk Cnnectivity Better Service Perfrmance and QS On rbit satellite cverage area flexibility Meet dynamic traffic demands f custmer Meet specific reginal and lcal service needs Backward cmpatibility with Legacy systems Applicatins and Advantages Overcming legacy satellite limitatins Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
10 Satellites Multi Beam Antenna Cverage Flexibility (Example) Satellite Spt Beam with Frequency reuse Available bandwidth is divided int 4 sub-bands Larger capacity by using same sub-band in multiple spt beams Satellite cverage flexibility On-rbit cverage changes fr Tailred landmass cverage Larger dwnlink EIRP fr smaller user terminals Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
11 Higher System Capacity Thrugh Frequency Reuse (Example) HRB NAYSHE SEL ITM CTU SHA TPE CAN HAN 20 Theta*sin(phi) in Degrees BKK SGN KUL HLP PER MNL POM BNE CBR 20 Multi-Beam Cverage Single Wide Area Cverage Beam Mre than ten times capacity Higher effective system bandwidth (number f cells) (allcated bandwidth) Effective bandwidth = Frequency reuse factr Example: 50-beam system using dual plarizatin Effective bandwidth = (50 2) (500 MHz) 4 = 12.5 GHz Equivalent number f 36 MHz transpnders 12.5 GHz/40 MHz = 310 Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
12 Satellite Mesh Reflectr Antenna Cverage Perfrmance (Example) Edge f cverage perfrmance Slid Reflectr Pan Eurpean Beam: 33 dbi Shaped Reflectr Eurpean Shaped Beams: 348 dbi 1 5 db imprved perfrmance ver slid reflectr 2.2 m Slid antenna Satellite Cverage 7.5 m Mesh Shaped antenna Satellite Cverage Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
13 Satellite Channel Frequency Reuse Plan (Example) Mesh Shaped antenna Satellite Channel Plan (7.5 m) 14AH 13BH 14AV 11BV Slid antenna Satellite Channel Plan (2.2 m) 32 H 32 V Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
14 Satellite System Capacity Cmparisn (Example) Satellite Capacity Slid Pan Eurpean Vs Mesh Shaped Reginal Slid antenna Satellite (2.2 m) Mesh shaped antenna Satellite (7m) 7% 6% 12% 7% 6% 19% 12% 7% 7% 6% 11% France (Ant #1 ) Italy (Ant #1 ) UK (Ant #1 ) E. Russia (Ant #2 ) W. Russia (Ant #2 ) Turkey (Ant #3 ) Balkans (Ant #3 ) Germany (Ant #3 ) Spain (Ant #4 ) Scandinavia (Ant #4 ) Reginal Satellite Beam Capacity (204 Channels) Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
15 Digital Transpnder Cncept Blck Diagram Divides cmplex baseband input signal (which cntains user channels) int 250 verlapping 0.5 MHz sub-channels ALC functin levels the pwer between user channels Sub-channels are recnstructed int their respective user channels with minimal signal distrtin (perfect Filter recnstructin design cnstraint Recmbines user channels int a ne signal with a 125 MHz bandwidth Digitizer Channelizer Switch Recmbiner Analg Recnstructin Analg t digital cnversin f 125 MHz signal centered at 640 MHz Sampling rate 512 Msps 40 db SNR (6.5 bits) Rutes sub-channel data t the apprpriate prt Sub-channel remapping Bradcast/multicast Cnverts digital samples t 125 MHz bandwidth analg signal Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
16 Digital Transpnder Discriminating Advantages On-bard aggregatin frm multiple surces Can cmbine multiple uplink channels frm widespread lcatins int a single dwnlink Frequency translatin and time slt (TDM) switching Imprved amplitude and phase linearity Digital pre-distrtin f HPA Increased capacity Mre efficient mdulatin, Reduced channel guard band Ability t respnd t changing markets and traffic patterns Recnfigure cnnectivity at sub-transpnder level Allws selling fractinal bandwidth (2.5, 7, 36, 72 MHz) Prvides circuit switching between different spt beams Backward cmpatibility with analg transpnders Lwer SI&T csts fr cmplex switching architectures Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
17 Frequency Respnse Cmparisn Digital Vs SAW Filters 0 Frequency Respnse 2.5 MHz 72 MHz 36 MHz IL(dB) Frequency(MHz) 2.5 MHz, 7 MHz, MHz channels in 125 MHz band Frequency Respnse, SAW Filter Frequency Respnse, Digital Filter IL(dB) IL(dB) GD(usec) Frequency(MHz) Grup Delay(usec) IL(dB) MHz Bandpass filter IL(dB) GD(usec) Frequency(MHz) Grup Delay(usec) Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
18 Multimedia Satellite Drivers Bradband Multimedia Satellite Industry is ging thrugh Transfrmatin and cnslidatin Service prviders Initiate netwrk based satellite fleets fr value added service fferings fr infrmatin intensive markets Team with suppliers fr develping business based satellite slutin Develp lng range transfrmatinal architectures t meet Glbal trends and emerging custmer needs Develp regulatry strategies fr satellite netwrk peratin Pull satellite technlgy frm prven manufacturers Fr applicatin t infrmatin intensive multimedia satellites Prviding cst effective bradband multimedia satellite system slutins with high perfrmance Expert Systems Engineering Supprt System definitin,analyses and trades fr ptimum Netwrk Expert advice n standards in netwrk implementatin Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
19 Backup Slides Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
20 References Varius paper n this subject are available at WEB site URL: Bradband paylads fr the emerging Ka band markets, 7thKa band cnference, M Bever, S Willughby, E Wiswell, K H, and S Linsky, 52 nd Internatinal Astrnautical Federatin Cngress, Tuluse, France, Octber 1-5, 2001 Next generatin bradband satellite cmmunicatin systems S Verma, E Wiswell, AIAA 20 th Cnference n Satellite Systems, Mntreal, Canada, May 12 15, 2002 Venture Develpment Planning fr Bradband Satellite Netwrks, J Freitag, P Stenzel, J Myers, P Varend, E Wiswell, 5 th Ka-Band Utilizatin Cnference, Tarmina, Italy, Octber 18-20, 1999, Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
21 Multi Beam High Gain Antenna (Example) Antenna Integratin Simulatr (AIS) Design Verificatin Mdel (DVM) Antenna Upgrade Antenna Integratin Simulatr and Design Verificatin Mdel Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
22 Mesh Reflectr Shaped Antenna Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
23 Multi Shaped Beam Satellite Cncept (Example) One 19.2 E with five Satellite Cmmunicatin Antenna Fur antennas t generate ten beams fr ten Eurpean cverage regins One slid antenna t prvide Pan Eurpean regin beam cverage Higher satellite system channel capacity (204 Vs 64) System cverage meeting custmer linguistic needs Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
24 Antenna Pwer Amplifiers A/D Cnverter M M I C ASIC Devices Packaging Technlgy Reginal FOV MBA (2-5 deg. beams) TWTA 40% efficiency 2µm HBT GaAs 0.2µm HEMT 0.8µm CMOS 100K gate/5v Surface munt IMA Full Earth FOV MBA (0.8 deg. beams) TWTA 50% efficiency 1µm HBT GaAs 0.15µm HEMT 0.7µm CMOS SOI 200K gate/3.3v MCM Phased Array SSPA/ InP >50% efficiency 1µm HBT InP0.1 µm HEMT 0.5µm CMOS SOI 500K gate/2.5v BGA/COB Bradband Satellite Paylad Heritage Early 1980s t Present 19 years Prcessed Paylad Experience 1995 t 1996 Early Ka-Band Architecture Studies Inter-S atellite Link 1996 Identified Enabling Technlgies 1996 t 1998 Early Develpment f Enabling Technlgies 1998 t 1999 Functinal Validatin in Hardware Functinal Prttype (HFP) Ka-band Ka-ba nd Signaling & Data Channels Signaling & Data Channe ls S ignaling Channels Ka-band Ka-band Signaling & Data Channels Signaling & Data Channels Signaling Chan nels Size,Weight Best fr Astrlink Risk User Terminal Netwrk Ope ratins Center (NOC) PSTN Gateway Terminal User Terminal Satelite Manage ment Center(S MC) Internet Terrestria lnetwrk Gateway Terminal Vide S erver Netwrk Operatins Center (NOC) Pwer 1999 t 2002 Paylad Design Verificatin Mdel Develpment and First Flight Paylad Delivery Wrkshp n Satellites in IP and Multimedia - Geneva, 9-11 December
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