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Girth 4 of Gallager codes 1.0
File ID: 83265






Girth 4 of Gallager codes 1.0
Download Girth 4 of Gallager codes 1.0http://www.mathworks.com/Report Error Link
License: Shareware
File Size: 10.0 KB
Downloads: 13
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Girth 4 of Gallager codes 1.0 Description
Description: The Program to test the girth 4 of Gallager LDPC codes
Copyright (C) Yang XIAO, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn,
The program analyzes the girth 4 for Gallager LDPC codes. The figures show
the parity check matrix H and the girth test matrix O, respectively.
Fig 1 can help us know the 1sd-deOao distribution of the parity check matrix H.
Fig. 2 is the result of girth 4 for the given H.
Theorem in Ref [1]: The H matrix has no gith4, if and only if the O matrix in Fig.2 has no entry value to be larger than 1.
Ref:
[1] Y. Xiao, M -H Lee, d-deDULow complexity MIMO-LDPC CDMA systems over multipath channelsd-deDt,
IEICE Transactions on Communications, v E89-B, n 5, May, 2006, p 1713-1717
[2] J. Fan, Y. Xiao, d-deDUA method of counting the number of cycles in LDPC codesd-deDt,
8th International Conference on Signal Processing, ICSP 2006,Volume: 3,
ISBN: 0-7803-9737-1, Digital Object Identifier: 10.1109/ICOSP.2006.345906
[3] MOHAMMED ALKHANBASH, Gallager LDPC, Matlab center, File Exchange, 2007
The papers [1] and [2] can be downloaded from Web site of IEICE and IEEE Explore.

License: Shareware

Related: Codes, cycles, International, Conference, Processing, Signal, Number, counting, transactions, ieice

O/S:BSD, Linux, Solaris, Mac OS X

File Size: 10.0 KB

Downloads: 13



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