发明授权
US07770089B2 Method and apparatus for providing reduced memory Low Density Parity Check (LDPC) codes
有权
用于提供减少的存储器低密度奇偶校验（LDPC）码的方法和装置
- 专利标题： Method and apparatus for providing reduced memory Low Density Parity Check (LDPC) codes
- 专利标题（中）： 用于提供减少的存储器低密度奇偶校验（LDPC）码的方法和装置
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申请号： US11805616申请日： 2007-05-24
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公开(公告)号： US07770089B2公开(公告)日： 2010-08-03
- 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： DTVG Licensing, Inc.
- 当前专利权人： DTVG Licensing, 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 a rate 3/5 code, the approach provides a degree profile that yields reduced memory requirements for storage of the edge values without significantly affecting the performance with respect to an “unmodified” rate 3/5 code. The relevant parameters for the reduced memory LDPC codes are as follows: q=72, nldpc=64800, kldpc=nBCH=38880, kBCH=38688. The above approach has particular application in digital video broadcast services over satellite.
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