The zip file contains 1. A 128x256 Regular (3,6) H matrix (if you need to simulate other codes, need to write your own code for generating those parity check matrices). The file 128x256regular_v6.mat is for those using Matlab 6.5. 2. Files for LDPC code simulation over the AWGN channel. 3. Matlab-based and C-based (C-mex file)implementation of the LDPC decoder. The main simulation script contains the commands for the use of both decoders (there are 2 C-based decoders and one Matlab based). The commands for the decoder that are going to be used need to "uncommented", and those for the other decoder need to be "commented". 3a. To compile the C-mex file, need to install a C compiler (I have used Miscosoft Visual C++ 6.0). Then have to go to the Matlab command window and do ">>mex-setup" (then go through the steps of selecting the desired compiler).

LDPC\128x256regular.mat
....\128x256regular_v6.mat
....\128x256_regular_results.txt
....\ber-plot.jpg
....\bpsk.m
....\Comparison.xls
....\decodeutil.h
....\decodeutil_new.h
....\decode_ldpc.cpp
....\decode_ldpc.dll
....\decode_ldpc_matlab.m
....\decode_ldpc_new.cpp
....\decode_ldpc_new.dll
....\generic_simulator_nonsys.m
....\LDPC_BP_decode.m
....\one_finder.m
LDPC

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