the matlab program checks for cycles that are of the legnth 4.it is a useful program to check if the cycles in your LDPC code are to short thus causing BER errors

LDPC码以及类LDPC码的BER性能以及理论阀值的汇总报告。-Thresholds and BER for LDPC

Abstract—Selection combining cascaded with maximum-ratio combining (SC/MRC), which is particularly useful when site diversity is available, combined with low-density parity-check (LDPC) codes is able to combat the effects of fading. The biterro

LDPC码的完整的编译码，采用波束成形技术的BER计算，计算多重分形非趋势波动分析。- Complete codec LDPC code, By applying the beam forming technology of BER Calculate the multifractal trend fluctuation analysis.