发明授权
US07376883B2 Method and system for providing long and short block length low density parity check (LDPC) codes
有权
提供长和短块长度低密度奇偶校验（LDPC）码的方法和系统
- 专利标题： Method and system for providing long and short block length low density parity check (LDPC) codes
- 专利标题（中）： 提供长和短块长度低密度奇偶校验（LDPC）码的方法和系统
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申请号： US10971509申请日： 2004-10-22
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公开(公告)号： US07376883B2公开(公告)日： 2008-05-20
- 发明人: Mustafa Eroz , Feng-Wen Sun , Lin-Nan Lee
- 申请人： Mustafa Eroz , Feng-Wen Sun , Lin-Nan Lee
- 申请人地址： US CA El Segundo
- 专利权人： The DIRECTV Group, Inc.
- 当前专利权人： The DIRECTV Group, Inc.
- 当前专利权人地址： US CA El Segundo
- 主分类号： H03M13/00
- IPC分类号： H03M13/00
摘要：
An approach is provided for generating Low Density Parity Check (LDPC) codes. An LDPC encoder generates a LDPC code with an outer Bose Chaudhuri Hocquenghem (BCH) code. For ⅓ rate, the relevant parameters are as follows: q=120, nldpc=64,800, kldpc=nBCH=21600, kBCH=21408 (12 bit error correcting BCH). For ¼ rate, the LDPC code has the following relevant parameters: q=135, nldpc=64,800, kldpc=nBCH=16200, kBCH=16008 (12 bit error correcting BCH). For ⅖ rate, the following parameters exist: q=108, nldpc=64800, kldpc=nBCH=25920, kBCH=25728 (12 bit error correcting BCH). The above approach has particular application in digital video broadcast services over satellite.
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