Invention Grant
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
- Patent Title: Method and apparatus for providing reduced memory Low Density Parity Check (LDPC) codes
- Patent Title (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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Application No.: US11805616Application Date: 2007-05-24
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Publication No.: US07770089B2Publication Date: 2010-08-03
- Inventor: Mustafa Eroz , Feng-Wen Sun , Lin-Nan Lee
- Applicant: Mustafa Eroz , Feng-Wen Sun , Lin-Nan Lee
- Applicant Address: US CA El Segundo
- Assignee: DTVG Licensing, Inc.
- Current Assignee: DTVG Licensing, Inc.
- Current Assignee Address: US CA El Segundo
- Main IPC: H03M13/00
- IPC: H03M13/00
Abstract:
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.
Public/Granted literature
- US20070226578A1 Method and apparatus for providing reduced memory low density parity check (LDPC) codes Public/Granted day:2007-09-27
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