Editing ISDB (section)

==Table of terrestrial HDTV transmission systems==
{|class="wikitable"
|+ Table 1: Main characteristics of three DTTB systems
! Systems
! ATSC 8-VSB !! DVB COFDM !! ISDB BST-COFDM
|-
!colspan=4 align="left"|Source coding
|-
! Video
|colspan=3 align="center"|Main profile syntax of ISO/IEC 13818-2 (MPEG-2 – video)
|-
! Audio
| ATSC Standard A/52 (Dolby AC-3) || ISO/IEC 13818-2 (MPEG-2 &ndash; layer II audio) and Dolby AC-3 ||ISO/IEC 13818-7 (MPEG-2 &ndash; AAC audio)
|-
!colspan=4 align="left"|Transmission system
|-
!Channel coding
|colspan=3 align="center"|-
|-
! Outer coding
| R-S (207, 187, t = 10) ||colspan=2|R-S (204, 188, t = 8)
|-
! Outer interleaver
| 52 R-S block interleaver ||colspan=2|12 R-S block interleaver
|-
! Inner coding
| Rate 2/3 trellis code ||colspan=2|Punctured convolution code: Rate 1/2, 2/3,3/4, 5/6, 7/8 Constraint length = 7, Polynomials (octal) = 171, 133
|-
! Inner interleaver
| 12 to 1 trellis code interleaver || Bit-wise interleaving and frequency interleaving ||Bit-wise interleaving, frequency interleaving and selectable time interleaving
|-
! Data randomization
|colspan=3 align="center"|16-bit PRBS
|-
! Modulation
|8-VSB and 16-VSB 
|COFDM <br /> QPSK, 16QAM and 64QAM <br /> Hierarchical modulation: multi-resolution constellation (16QAM and 64 QAM) <br /> Guard interval: 1/32, 1/16, 1/8 & 1/4 of OFDM symbol <br /> 2 modes: 2k and 8k FFT 
|BST-COFDM with 13 frequency segments <br /> DQPSK, QPSK, 16QAM and 64QAM <br /> Hierarchical modulation: choice of three different modulations on each segment <br /> Guard interval: 1/32, 1/16, 1/8 & 1/4 of OFDM symbol <br /> 3 modes: 2k, 4k and 8k FFT
|}
{{Clear}}