1、 55689 2013 () 556892013 II 1 - - ( -) 2 480 3 31 2013 . 1332 4 1.02012 ( 8). ( 1 ) , . () . , (gost.ru) , 2014 , 556892013 III 1 1 2 . 1 3 , , 2 4 4 5 . 6 6 . 7 () 100, 200 250 20 () BER 22 () . 23 . 42 556892013 1 () Realtime audiovisual information system (RAVIS). Norms and methods of measurement
2、 assurance 20140901 1 , 543092011 I II - (65,8 74,0 87,5 108,0 ). . , , , , . 2 : 1515069 , . . , , 2226194 . 522102004 . 543092011 (). , -. 2.2.4/2.1.8.05596 ( ) . -2002. 1. . 2. . 3. , 1 , . , , . , , (). , , , , , , , , , , . 556892013 2 3 , , 3.1 , 52210-2004, : 3.1.1 : , , . 3.1.2 (Guard Interv
3、al): , OFDM-, , . 3.1.3 : , , , . 3.1.4 OFDM (OFDM Frame): OFDM; . 3.1.5 (Data Frame): bchK , ( LDPC). 3.1.6 : . 3.1.7 (MER): , () . 3.1.8 : , OFDM. 3.1.9 : MPEG-2 1, 0x00; 0x47, 0x1F, 0xFF 0x10, 184 (0x00). 3.1.10 - (PAPR, Peak-to-Average Power Ratio): . 3.1.11 : , OFDM. 3.1.12 OFDM (OFDM Symbol):
4、ST , , , . 3.1.13 (Sync Byte): 47 . . 3.1.14 : , . 3.1.15 : , , (100, 200, 250 ). . 3.1.16 MPEG-2 (MPEG-2 Transport Packet): 188 , . 3.1.17 (Transport Stream): . 3.1.18 OFDM (OFDM Cell): , OFDM. 3.1.19 (Data Cell): OFDM, . 3.2 : f ( OFDM); cf ; k OFDM; k ; 556892013 3bchK ;maxK ( );minK ( );totalK O
5、FDM;FT OFDM;GT ;ST OFDM;UT OFDM.3.3 : 16-QAM 16- QAM; 64-QAM 64- QAM; AI (Amplitude Imbalance) ; BER (Bit Error Rate) ; BPSK (Binary Phase Shift Keying) ; CS (Carrier Suppression) ; DVB-T (Digital Video Broadcasting Terrestrial) ; DVB-T2 (Digital Video Broadcasting Terrestrial, Second Generation) ;
6、END (Equivalent Noise Degradation) ; ENF (Equivalent Noise Floor) ; EVM (Error Vector Magnitude) ; GPS (Global Positioning System) ; LDPC (Low Density Parity Check) ; MER (Modulation Error Ratio) ; MPEG-2 (Motion Picture Experts Group) - -; OFDM (Orthogonal Frequency-Division Multiplexing) ; PJ (Pha
7、se Jitter) ; PPS (Pulse Per Second) ; QAM (Quadrature Amplitude Modulation) - ; QCIF (Quarter Common Intermediate Format) 176144 ; QE (Quadrature Error) ; QEF (Quasi Error Free) ; QPSK (Quadrature Phase Shift Keying) ; SEP (System Error Performance) ; SFN (Single Frequen Network) ; STE (System Targe
8、t Error) ; STS (Synchronisation Time Stamp) ; - ; - ; ; - (BCH, Bose-Chaudhuri-Hocquenghem Multiple Error Correction Binary Block Code); ; ; ; ; ; ; ; ; ; 556892013 4 (30 300 ); (SNR) ; (TPS, Transmission Parameter Signaling) ; (PRBS, Pseudo Random Binary Sequence) ; (RAVIS, Realtime AudioVisual Inf
9、ormation System) ; ; ; ; (TS, Transport Stream) ; - . 4 4.1 , (); 1 2. A (LDPC)BE FG F , HJ K LM G OFDMIkQk () 1 () ( ): () (B); , () () (LDPC) (E); , (F); (G); ( ) ; OFDM: OFDM, , , - (H); OFDM , , (J); - (K); (L); (M). 556892013 5IkQk SNP R ()VYZU (LDPC)X , 2 () : , (P); - (R); (S); ( , , , , (U) ) (V);
