psk调制与解调（加入噪声）。属于通信原理的课程设计。-psk modulation and demodulation (add noise). Communication Theory belong to the curriculum design.

BER of QAM at Different bitrates, The resulting bit error rate the Monte Carlo simulation for the different QAM bit rates (4 to 1024) have been exported to the Matlab workspace as a vector of error values for each bit rate versus the noise powe

今天看了些EMD信号分解方面的东西，matlab官网上有个Hilbert-Huang Transform的代码，代码效率极高啊，人家3句语句就解决了一个大问题，很牛啊！还有一个GRilling的EMD工具箱，好多文件，功能应该相当强大。 这里研究了研究matlab官网的代码，加了些注释、功能演示，效果如下 原始信号由3个正弦信号加噪声组成，如下-Today looked at some of the EMD signal decomposition of things, matlab

Add noise processing, Calculated transmission characteristics and reflection characteristics of the one-dimensional photonic crystals, Matlab for beginner students will help.