1、 56152 2014 (T2-MI) (DVB-T2) ETSI TS 102 773 V1.3.1 (2012-01) Digital Video Broadcasting (DVB); Modulator Interface (T2-MI) for a second generation digital terrestrial television broadcasting system (DVB-T2) (NEQ) ETSI EN 302 755 V1.3.1 (2012-04) Digital Video Broadcasting (DVB); Frame structure cha
2、nnel coding and modulation for a second generation digital terrestrial television broadcasting system (DVB-T2) (NEQ) ETSI TS 102 831 V1.2.1 (2012-08) Digital Video Broadcasting (DVB); Implementation guidelines for a second generation digital terrestrial television broadcasting system (DVB-T2) (NEQ)
3、2014 561522014 II 1 - - ( ) 2 480 3 - 8 2014 . 1280- 4 - (ETSI): 102 773 V1.3.1 (2012-01) . (T2-MI) (DVB-T2) ETSI TS 102 773 V1.3.1 (2012-01) Digital Video Broadcasting (DVB); Modulator Interface (T2-MI) for a second generation digital terrestrial television broadcasting system (DVB-T2), NEQ; 302 75
4、5 V1.3.1 (2012-04) - . , - (DVB-T2) ETSI EN 302 755 V1.3.1 (2012-04) Digital Video Broadcasting (DVB); Frame structure channel coding and modulation for a second generation digital terrestrial television broadcasting system (DVB-T2), NEQ; 102 831 V1.2.1 (2012-08) - . - (DVB-T2) ETSI TS 102 831 V1.2.
5、1 (2012-08) Digital Video Broadcasting (DVB); Implementation guidelines for a second generation digital terrestrial television broadcasting system (DVB-T2), NEQ 5 1.02012 ( 8). ( 1 ) , -. () - . , - (gost.ru) , 2014 -, - 561522014 III 1 . 1 2 . 1 3 , . 2 4 3 .27 561522014 1 (T2-MI) (DVB-T2) Digital
6、Video Broadcasting. Modulator Interface (T2-MI) for a second generation digital terrestrial television broadcasting system (DVB-T2). Basic parameters 20150901 1 (T2-MI) - (DVB-T2) 1. 2- - DVB-T2 . , - DVB-T2. 2 : 52210-2004 . . 52591-2006 -. 53528-2009 . DSM-CC. 54994-2012 . DVB IP . - , 1 , - . , ,
7、 . -, , - (). -, , , , , . , , , , - . 561522014 2 3 , 3.1 - 1: 3.1.1 FEF: 2-, FEF. 3.1.2 MISO: (1 2), MISO, , -. 3.1.3 L1-: L1-, , - 2- . 3.1.4 : , - , - , . 3.1.5 L1-: L1-, , - . 3.1.6 PLP: PLP, 2-, L1- , PLP. 3.1.7 T2-MI: T2-MI, 2- 2 - (ID) T2-MI. 3.1.8 : , - 2. 3.1.9 L1 -: , 2 , , 2- , L1 -. 3.1
8、.10 L1 -: , 2 2- PLP. 3.1.11 2-: , T2-MI ; 2- , , -. 3.2 : ASI (Asynchronous Serial Interface); bflbf , (bit-field, left bit first); bflbfzpb , , 8 (bit-field, left bit first, zero padded after the last bit to a multiple of 8 bits); CRC (Cyclic Redundancy Check); DVB (Digital Video Broadcasting); FE
9、F (Future Extension Frame); GSE (Generic Stream Encapsulation); IP (Internet Protocol); IPTV (Internet Protocol TeleVision); I/Q () (Inphase and Quadrature); MISO , (Multiple Input, Single Output); MPEG ; - - (Moving Picture Experts Group); PAPR (Peak-to-Average Power Ratio); PAT (Program Associatio
10、n Table); PID (Packet Identifier); PLP (Physical Layer Pipe); PMT (Program Map Table); PRBS (Pseudo Random Binary Sequence); RTP (Real Time Protocol); SFN (Single Frequency Network); T2-MI DVB-T2 (DVB-T2 Modulator Interface); T2-MIP DVB-T2 (DVB-T2 Modulator Information Packet); TFS - (Time Frequency
11、 Slicing); TS (Transport Stream); TX-SIG (Transmitter Signature); UDP (User Datagram Protocol); 561522014 3 uimsbf , (unsigned integer, most significant bit first); UTC (Universal Time Coordinated). 4 4.1 T2-MI T2-MI 1. 1 T2-MI T2-MI T2-MI DVB-T2 - 2-: - MPEG-2 TS / GSE, DVB-T2 2; - L1; - I/Q- ; - D
12、VB-T2; - FEF. 2- T2-MI MPEG-2 TS . MPEG-2 TS - DVB, ASI, - IP- IP-. 4.2 T2-MI T2-MI , , - . 561522014 4 4.2.1 T2-MI T2-MI 2. 2 T2-MI T2-MI T2-MI , , CRC. T2-MI : packet_type (8 ) , . - 1. 1 T2-MI packet_type 0016 0116I/Q- 0216 1016 L1 1116 L1 1216 2 2016 DVB-T2 2116 3016 FEF 3116 FEF I/Q- 3216 FEF 3
13、316- FEF packet_count (8 ) T2-MI , 1 - , . . FF16 0016. 561522014 5 superframe_idx (4 ) , T2-MI, . 1 -. . rfu (9 ) , 0. t2mi_stream_id (3 ) T2-MI, - T2-MI, T2-MI. . , T2-MI 0. - T2-MI T2-MI, . payload_len (16 ) ; - . (payload_len ) T2-MI, . 4.2.2. (pad_len ) 0 7 0 , T2-MI , . payload_len+ pad_len 8. crc32 (32 ) CRC, T2-MI (T2-MI , - ) . 4.4. 4.2.2 T2-MI 4.2.2.1 T2-MI 0016 . - 3. 3 : frame_idx (8 ) FRAME_IDX ( 2) 2-, , . plp_id (8 ) PLP_ID ( 2), DVB-T2. intl_frame_start (1 ) 1 , PLP, 0 , ( ). rfu (7 ) , 0. BBFRAME (Kbch) ( ) PLP, PADDING, . - T2-MI . - . PADDING - , PADDING 0.
