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该代码为PCA主成分分析，可用于特征选择，选取贡献最大的前三个主成分(The code for the PCA principal component analysis, can be used for feature selection, select the largest contribution to the first three principal components)

完整的现代通信系统仿真源代码包括信道容量和编码扩频通信等(Complete source code of modern communication system simulation)

it consist of dsp programme

说明：  卷积码维特比译码器设计输出完整电路进行误码率分析(Convolutional code Viterbi decoder integrated circuit design of the output bit error rate analysis)

求积分的matlab源程序,该程序的执行效率比较高，并且简单。(Quadrature matlab source, the efficiency of the program is relatively high, and simple.)

采用小波相邻系数降噪，然后用改进的局域均值分解对滚动轴承进行特征提取，得到特征向量(Using adjacent wavelet coefficients of noise reduction, and then use the improved local mean decomposition characteristics of rolling bearing are extracted, get the feature vector)

PID控制模块 由SIMULINK仿真建立 版本MATLAB7.0(PID control module from the SIMULINK simulation of the establishment version of MATLAB7.0)

一种新的集群优化算法，粒子群优化算法，重要文献(New cluster optimization algorithm PSO)

仿真研究2PAM，4PAM眼图特性； 分别加入高斯白噪声，码间串扰，研究它们对眼图的影响； 改变接收滤波器的滚降系数，研究它对眼图的影响； 研究不同波特率对眼图的影响。 (Simulation studies 2PAM, 4PAM eye diagram characteristics were added white Gaussian noise, inter-symbol interference, influence their study eye chart changing the receive filter roll-off factor, the study of its effects on the eye research on different baud rate eye effects.)

此内容是对多址技术即cdma,fdma,tdma技术的原理详细介绍，然后利用matlab7.0仿真软件进行simulink仿真框图设计，进行仿真实验，对教师教学和学生自学都非常有帮助哦 ！(This content is the multiple access technology that is cdma, fdma, tdma technique detailed introduction, and then use simulation software matlab7.0 simulation simulink block diagram of the design, simulation experiments, the teaching of teachers and students have been very helpful in self-Oh!)