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LDPC code | matlab
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clear all;clc;%ticrows=256;cols=512;count=20;SNR=0:1:6;for SNRindex=1:length(SNR) total_ Err = 0; & nbsp; & nbsp; errmax = 0; & nbsp; & nbsp; nerr = 0; & nbsp; & nbsp; loop = 0; & nbsp; & nbsp; while loop & lt; count & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; s = round (rand (1, cols rows));% 1 * 128 0,1 matrix & nbsp; & nbsp; & nbsp;% produces H matrix & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; H = genh (rows, cols); & nbsp; & nbsp; & nbsp; & nbsp; & nbsp;% uses H matrix for LDPC Coding & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; [u,P,rearranged_ cols]=ldpc_ Encode (s, H); & nbsp; & nbsp; & nbsp;% SNR = 5;% signal to noise ratio & nbsp; & nbsp; & nbsp; & nbsp; amp = 1;% signal amplitude & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; TX_ waveform=bpsk(u,amp); rx_ waveform=awgn(tx_ Waveform, SNR (snrindex)); & nbsp; & nbsp; & nbsp; & nbsp; scale (1: length (U)) = 1; & nbsp;% no fading. & nbsp; & nbsp; & nbsp; & nbsp; & nbsp;% LDPC decoding
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