ITU-R S (2010/12)!" # S
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1 ITU-R S.878 (/) S
2 ITU-R S.878 ii.. (IPR) (ITU-T/ITU-R/ISO/IEC).ITU-R ( ) ( ) ( ) BO BR BS BT F M P RA S RS SA SF SM SNG TF V :.ITU-R ITU..(ITU)
3 ITU-R S.878 ITU-R S.878 () (ITU-R 7-/4 ITU-R 46-/4 ). (MC-CDMA). (CI-OFDM) ( (MSS) (FSS) ( (OFDMA OFDM-FDMA) - (MC-CDMA) (MF-TDMA) OFDM ( OFDM (HPA) (PAPR) ) ( ( ( ( (MF-TDMA) ITU-R S.79 ( (COFDM) ITU-R BO. ( MHz 7-4
4 ITU-R S.878 ITU-R S.7 ( (CI-OFDM) (MC-CDMA). CI-OFDM CI-OFDM.OFDM (OFDM)..5. OFDM OFDM ITU-R S.7.ITU-R S.7. (HPA) (PAPR) (CI-OFDM) OFDM.OFDM (PAPR) (FFT). ITU-R S.7.6 CI-OFDM -.CI-OFDM.(ACM) : MSG.(MSG).MSG.CI-OFDM OFDM N N MSG
5 ITU-R S.878.(HPA) MSG. (U/C).. (TWTA).TWTA (MCSS) TWTA.(L-TWTA) TWTA TWTA...(MOODCOC) (CNR) (ACM). :.(MPU) MSG MPU.CI-OFDM OFDM. N MPU.. MPU.. CI-OFDM OFDM CI-OFDM OFDM CI-OFDM
6 ITU-R S (CI-OFDM). DVB-S ACM 4. L-TWTA. 64.ITU-R S.7... (TD) PAPR (PER) :.(IBO) () TD (db) = CNR nonlinear (db) - CNR linear (db) + IBO db CNR linear CNR nonlinear. HPA HPA L-TWTA DVB-S. L-TWTA HPA : () CNR eq (db) = CNR (db) + IBO opt db. (HPA ) IBO db HPA 5 IBO L-TWTA SCSS. L-TWTA 6. db L-TWTA (IBO opt ) M-ary (PSK).-APSK (6-APSK) 6- DVB-S SCSS..ITU-R S.7.9 DVB-S.ITU-R S PAPR.ITU-R S.7...ITU-R S.7 IBO opt
7 5 ITU-R S.878 (L-TWTA) (DVB-S) TDL-TWTA (db) L-TWTA CNReq PER = CNReq PER = (bit/s/hz),96,96,49 QPSK /4,64,64,79 QPSK /5,,,99 QPSK / 5,5 5,5,65 QPSK 5/6 5,6 5,6,78 8-PSK /5 7,84 7,84, 8-PSK /4 9, 9,,48 8-PSK 5/6,84,84,68 8-PSK 9/,7,,4,96 6-APSK /4,8,,9,6 6-APSK 4/5,,6,5, 6-APSK 5/6,,88,76,5 6-APSK 8/9,4,,99,56 6-APSK 9/,68,48,8,7 -APSK /4,84 4,45,6,95 -APSK 4/5,94 5, 4,6 4, -APSK 5/6, 6,7 5,5 4,9 -APSK 8/9, 6,98 5,75 4,45 -APSK 9/ MCSS CI-OFDM MCSS MCSS.OFDM MCSS. PAPR.SCSS db 4,5,5 CI-OFDM. OFDM MCSS (bit/s/hz ) ( -() - CNR eq.dvb-s ACM.MCSS MODCOD. CNR eq x CNR eq y MODCOD x. y y OFDM MCSS..CI-OFDM MCSS
8 .db bit/s/hz,6 ITU-R S CI-OFDM MCSS bit/s/hz,6 CI-OFDM MCSS. TD (db),8,,,8,4,45,64,88,9,67,,66,8,46,55 4,9 6, 7, CI-OFDM CI-OFDM IBOopt (db) OFDM MCSS DVB-S CNReq =,78,44, 5,4 6, 8,9 9,95,7,5,59,56 5,4 5,8 6,6 7,47 8,55,8,75 TD (db),67,8,6,7,5, 4,6 5,85 5,7 5,87 6,55 7,8 7,77 7,6 8, 8,9 9,9,6 OFDM IBOopt (db) CNReq =,9,6,7 6,78 8,,7,9 6,69 5,4 6,79 8,8,4,76,4,5,6 5,4 5,8 (bit/s/hz),49,79,99,65,78,,48,68,96,6,,5,56,7,95 4, 4,9 4,45 QPSK /4 QPSK /5 QPSK / QPSK 5/6 8-PSK /5 8-PSK /4 8-PSK 5/6 8-PSK 9/ 6-APSK /4 6-APSK 4/5 6-APSK 5/6 6-APSK 8/9 6-APSK 9/ -APSK /4 -APSK 4/5 -APSK 5/6 -APSK 8/9 -APSK 9/ L-TWTA SCSS HPA SCSS CI-OFDM MCSS OFDM MCSS. CNR eq MCSS SCSS MCSS. APSK- CI-OFDM.L-TWTA SCSS.OFDM MCSS MCSS bit/s/hz,5 OFDM MCSS MCSS bit/s/hz,55. db.ci-ofdm
9 7 ITU-R S.878 MCSS SCSS 9 8 SCSS L-TWTA MCSS OFDM MCSS CI-OFDM (db) ,5,5,5,5 4 (bit/s/hz)
10 DVB-S ITU-R S MCSS SCSS APSK.5 6-APSK (bit/s/hz) PSK QPSK SCSS SCSS L-TWTA MCSS CI-OFDM MCSS OFDM (db)
11 9 ITU-R S.878 CI-OFDM. db bit/s/hz,6 MCSS PAPR OFDM 7. db bit/s/hz,5 bit/s/hz,55 MCSS CI-OFDM.OFDM MCSS 4 (MC-CDMA) MC-CDMA. 4. MC-CDMA.... / /.(TDM) /(FDM)... /
12 ITU-R S.878 /.( )...QAM MC-CDMA (CDMA) MC-CDMA MC-CDMA. (OFDM). 4 B5 B4 B6 B B B B
13 ITU-R S MC-CDMA K K Σ ) ( / ) ( PAPR (AWGN) / ) ( PAPR
14 ITU-R S.878.MC-CDMA MC-CDMA... MC-CDMA MC-CDMA..6..PAPR. PAPR ITU-R S ITU-R S MC-CDMA 4.MC-CDMA (TWTA) 6.ITU-R S.7.. TWTA.(OBO).6 8 MC-CDMA =K 6=K. TWTA.=K.TWTA. (BER) 4 MC-CDMA QPSK, 6-QAM (N) (M) (K)
15 ITU-R S TWTA.... Q-. Q I I- أ) db) QPSK (OBO = ب) db) QPSK (OBO = Q-. Q I- I- ج) db) 6 QAM (OBO = د) db) 6 QAM (OBO = 6 MC-CDMA (BER) 7 7.(OBO).QPSK QAM-6 TWTA OBO MC-CDMA.6
16 ITU-R S MC-CDMA QPSK ( QPSK-TWTA K =, OBO db K = 8, OBO db K = 6, OBO db K =, OBO db K = 8, OBO db K = 6, OBO db K =, OBO 6 db K = 8, OBO 6 db K = 6, OBO 6 db 5 6, 4, 8,, 6, Eb/N 6-QAM ( 4 6-QAM-TWTA K =, OBO db K = 8, OBO db K = 6, OBO db K =, OBO db K = 8, OBO db K = 6, OBO db K =, OBO 6 db K = 8, OBO 6 db K = 6, OBO 6 db 5 6, 4, 8,, 6,, Eb/N
17 5 ITU-R S.878.TWTA MC-CDMA (BER) 8 TWTA - TWTA L-TWTA MC-CDMA BER. QAM-6 BER. OBO.QPSK.HPA.(MC-CDMA) PAPR.OBO OBO..CI-OFDM GHz / MC-CDMA 9 8. (BTC). BTC db 8,5 E s /N db,5 E s /N.ITU-R S.7 x ) QAM-64 (6,56) 5.dB 6- (x.mc-cdma MC-CDMA.dB IBO TWTA MC-CDMA bit/s/hz,97.mc-cdma PSK-8 (,5). E s /N 5 BPSK (5,) 8-PSK (5,) 8-PSK (,5),9 8,78,5 6 8,9 BER 8,,8 4,59 4, PER,,89,95,97 (bit/s/hz) 8 [Fontán et al., ] /.ITU-R S.7.4..ITU-R S.7..7 BTC [Fontán et al., ] 5.ITU-R S
18 L-TWTA ITU-R S QPSK (K = 6) ( 4 QPSK-TWTA (K = 6) OBO 6 db with PD OBO 6 db OBO db with PD OBO db OBO db with PD OBO db , 8,, 6, Eb/N 6-QAM (K = 6) ( 6-QAM-TWTA (K = 6) OBO 6 db with PD OBO 6 db OBO db with PD OBO db OBO db with PD OBO db , 8,, 6,, Eb/N
19 7 ITU-R S (MC-CDMA). (MC-CDMA). (Adaptive coding and modulation) ACM APSK CI-OFDM (Amplitude and phase shift keying) (Carrier interferometry orthogonal frequency-division multiplexing) (Coded orthogonal frequency-division multiplexing) (Multi-carrier code-division multiple access) (Carrier-to-noise ratio) (Fixed earth station) (Fast Fourier transform) (Fixed-satellite service) (High-power amplifiers) (Input back-off) (Inverse fast Fourier transform) (Linearized TWTAs) (Modulation and coding combination) (Mobile satellite service) (Output back-off) - (Multi-carrier satellite system) (Multifrequency TDMA) (Multi-carrier processing unit) (Multi-carrier signal generator) (Orthogonal frequency-division multiplexing) (Orthogonal frequency-division multiplexing frequency-division multiple access) (Peak to average power ratio) (Phase shift keying) (Radio-frequency) (Packet error rate) (Quadrature amplitude modulation) (Quadrature phase shift keying) (Single-carrier satellite system) CNR COFDM FES FFT FSS HPA IBO IFFT L-TWTA MC-CDMA MCSS MF-TDMA MODCOD MPU MSG MSS OBO OFDM OFDMA PAPR PER PSK QAM QPSK RF SCSS
20 ITU-R S (Total degradation) (Travelling wave tube amplifier) (Up-converter) (Unique word) (Vector signal analyser) (Vector signal generator) TD TWTA U/C UW VSA VSG
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