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The problems of LDPC codes in CCSDS 131.0-P- 1.0

  Date Added: June 04, 2013  |  Visits: 369

The problems of LDPC codes in CCSDS 131.0-P-

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We found that the generator matrix in Fig.6-2 to be wrong, Bi,j's are not circulant. You can not derive circulant Bi,j's from the parity check matrix in Fig.6-1.There are two vital problems in the LDPC codes of CCSDS 131.0-P-1.1: (1) the parity check matrix in Fig.6-1 is not full rank; (2) the generator matrix in Fig.6-2 is wrong, which are not circulant. To check our comments for the CCSDS 131.0-P-1.1 codes, you only construct the generator matrix in Fig.6-2, then multiply the transpose of the the parity check matrix in GF(2) provided by our program. You will find that the product in GF(2) is not zero!

Requirements: No special requirements
Platforms: Matlab
Keyword: 1310p11 Ccsds Codes Comments Construct Multiply Product Program Provided
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License: Shareware Size: 563.2 KB
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