模拟一个双正交信号源通过一个高斯噪声信道后，解码出来的数据和原来的数据进行比较估算其错误概率.-Simulation of a Communication System Employing M=4 Biorthogonal Signals.The purpose is to estimate the probability of error as a function of the SNR.

ldpc码的编解码实现，匹配追踪和正交匹配追踪，算法优化非常好，几乎没有循环。- Codec ldpc code implementation Matching Pursuit and orthogonal matching pursuit, Algorithm optimization is very good, almost no circulation.