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GY/T 220.1-2006 (GYT 220.1-2006)

GY/T 220.1-2006_English: PDF (GYT220.1-2006)
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GY/T 220.1-2006EnglishRFQ ASK 3 days Mobile Multimedia Broadcasting. Part 1: Framing Structure, Channel Coding and Modulation for Broadcasting Channel GY/T 220.1-2006 Valid GY/T 220.1-2006

BASIC DATA
Standard ID GY/T 220.1-2006 (GY/T220.1-2006)
Description (Translated English) Mobile Multimedia Broadcasting. Part 1: Framing Structure, Channel Coding and Modulation for Broadcasting Channel
Sector / Industry Radio, Film & TV Industry Standard (Recommended)
Classification of Chinese Standard M60
Classification of International Standard 33.160
Word Count Estimation 166,190
Date of Issue 2006-10-24
Date of Implementation 2006-11-01
Quoted Standard GB/T 7400.2; GB/T 7400.11,
Drafting Organization State Administration of Radio Film and Television Academy of Broadcasting Science
Administrative Organization National Radio and Television Standardization Technical Committee
Regulation (derived from) Communication Standards and Quality Information Network
Summary This standard specifies the 3OMHz ~ 3000MHz frequency range, mobile multimedia broadcasting system broadcast channel transmission signal frame structure, channel coding and modulation. This standard applies to the 3OMHz ~ 3000MHz frequency range, via satellite and/or terrestrial wireless transmitter television, radio, data and other multimedia signals broadcast systems.

GY/T 220.1-2006
Mobile Multimedia Broadcasting.Part 1. Framing Structure, Channel Coding and Modulation for Broadcasting Channel
People's Republic of China Radio, Film and Television Industry Standard
Mobile multimedia broadcasting. Part 1. Broadcast channels
Frame structure, channel coding and modulation
Mobile Multimedia Broadcasting Part 1. Framing Structure, Channel Coding and
Modulation for Broadcasting Channel
2006-10-24 released
2006-11-01 Implementation
Published by the State Administration of Radio, Film and Television
GY
Contents
Foreword ... III
Introduction ... IV
1 Scope ... 1
2 Normative references ... 1
3 Terms, definitions, abbreviations, symbols and conventions ... 1
3.1 Terms and definitions ... 1
3.2 Acronyms ... 2
3.3 Symbols and operators ... 3
4 System description ... 3
4.1 Summary ... 4
4.2 Physical layer structure ... 4
4.3 Physical layer frame structure ... 5
4.4 Input and output of the physical layer ... 8
5 Subsystem description ... 8
5.1 RS coding and byte interleaving ... 8
5.2 LDPC encoding ... 9
5.3 Bit interleaving ... 10
5.4 Constellation mapping ... 10
5.5 Frequency-domain OFDM symbol formation ... 12
5.6 Scrambling Codes ... 15
5.7 OFDM modulation ... 16
5.8 Framing ... 17
5.9 Modulated RF Signal ... 17
Appendix A (Normative) Transmitter Identification Sequence ... 21
Appendix B (Normative Appendix) RS (240, K) Generation Method ... 28
Appendix C (Normative) LDPC codeword bitmap vectors ... 30
Appendix D (Normative) LDPC code parity check matrix H ... 53
Appendix E (Informative) System payload data rate ... 159
Figure 1 Physical layer logical channel of the broadcast channel of the mobile multimedia broadcast system ... 4
Figure 2 Physical layer functional block diagram ... 5
Figure 3 Frame structure based on time slot division ... 5
Figure 4 Beacon Structure ... 5
Figure 5 Synchronous signal pseudo-random sequence generator ... 7
Figure 6 OFDM symbols ... 7
Figure 7 Overlap between guard intervals ... 7
Figure 8 Guard interval signal selection ... 8
Figure 9 Byte interleaver and RS (240, K) coding ... 9
Figure 10 Bit interleaving ... 10
Figure 11 BPSK constellation mapping ... 11
Figure 12 QPSK constellation mapping ... 11
Figure 13 16QAM constellation mapping ... 12
Figure 14 Signal distribution pattern ... 13
Figure 15 Linear feedback shift register generating scramble code ... 16
Figure 16 Schematic diagram of OFDM symbol subcarrier structure (Bf = 8MHz) ... 17
Figure 17 Schematic diagram of OFDM symbol subcarrier structure (Bf = 2MHz) ... 17
Figure 18 Theoretical power spectrum of a broadcast channel modulation signal (Bf = 8MHz) ... 18
Figure 19 Theoretical power spectrum of a broadcast channel modulation signal (Bf = 2MHz) ... 19
Figure 20 Modulated signal spectrum mask (Bf = 8MHz) ... 19
Figure 21 Modulated signal spectrum mask (Bf = 2MHz) ... 20
Table 1 T0 and T1 values ... 7
Table 2 Byte Interleaver Parameters MI ... 9
Table 3 LDPC encoding configuration ... 9
Table 4 Bit interleaver parameter values ... 10
Table 5 Position of consecutive pilots in OFDM symbols ... 13
Table 6 Continuous pilots used to transmit system information ... 14
Table 7 Transmission instructions ... 14
Table 8 Initial value of scrambled shift register ... 15
Table 9 Relative power value of each point in the spectrum mask when the in-band power is defined as 0dB (Bf = 8MHz) ... 20
Table 10 Relative power value of each point in the spectrum mask when the in-band power is defined as 0dB (Bf = 2MHz) ... 20
Table A1 Transmitter identification sequence ... 21
Table B1 RS (240,240) generator polynomial coefficients ... 28
Table B2 RS (240,224) generator polynomial coefficients ... 28
Table B3 RS (240,192) generator polynomial coefficients ... 28
Table B4 RS (240,176) generator polynomial coefficients ... 29
Table E1 System payload data rates ...
Foreword
This standard is Part 1 of the GY/T 220 mobile multimedia broadcasting standard series.
Appendices A, B, C, and