Matlab code for explain the relation between BER and SNR for different Modulation-Matlab code for explain the relation between BER and SNR for different Modulation

This code is related to the course Digital Communications. It easily reproduces the error probability as a function of the SNR per bit for QPSK and 16-QAM systems using MATLAB

针对LDPC码在理论和实现两方面分别进行了较深的研究。深入了解了LDPC码编码方法、译码方法以及性能等知识，重点研究了用MATLAB如何构造奇偶校验矩阵、如何编码和如何解码的算法，而且实现了在相同码率、信噪比下LDPC码性能与卷积码性能的对比。-LDPC codes for both theory and implementation were carried out deeper study. In-depth understanding of the LDPC coding method,