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Flexible construction of girth-six QC-LDPC Codes

24 Mar 2009

constructs girth-six QC-LDPC codes given a row-weight,column-weight, sub-matrix size.

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Description

The program constructs girth-six QC-LDPC codes given row-weight,k, column-weight,j, and sub-matrix size,m. The obtained parity-check matrix is stored in H. The construction has flexibility in that j,k and m can be varied.The program achieves girth-six by applying the row-column constraint. There are m rows in j submatrices. No two rows should share the same column more than once. This constraint is applied to avoid 4-cycles. The construction has flexibility in that j,k and m can be varied.

MATLAB release

MATLAB 7 (R14)

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Everyone's Tags	communications, errorcorrecting codes, information theory
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Comments and Ratings (2)
20 Apr 2009	Yang Xiao	Please check the BER of your codes: when j=4, k=8, m=57, the BER is very poor though it has no girth-4. Why?
30 Jul 2009	Gabofetswe Malema	I have BER and FER simulations for the (456,4,8) code (i.e m=57). The performance is okay and comparable to other (4,8) codes. thank you.

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Tag Activity for this File
Tag	Applied By	Date/Time
information theory	Gabofetswe Malema	24 Mar 2009 14:02:33
errorcorrecting codes	Gabofetswe Malema	24 Mar 2009 14:02:33
communications	Gabofetswe Malema	24 Mar 2009 14:02:33

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