MATLAB 用DFT (FFT)对连续信号进行频谱分析

这是在MATLAB环境下实现ppm调制解调的程序代码(This is the code in the MATLAB environment ppm modem)

本程序是将串口实时接收到的数据，然后将数据进行曲线绘制。(The data received by serial port is plotted in real time.)

说明：  仿真Alamouti 的 BER 性能曲线（QPSK 调制）(Simulation BER of QPSK Alamouti STBC with two transmit and receive antenna)

matlab对Bussgang忙均衡算法中的CMA算法进行仿真和误差分析(CMA of Blind Equalization)

本文以12个例程详细介绍了opnet的使用，尤其适合初学者。(This paper details the 12 routines opnet use, especially for beginners.)

for entropy H = entropy(S) this command will evaluate the entropy of S, S should be row matrix H = entropy([X Y Z]) this command will find the joint entropy for the 3 variables H = entropy([X,Y],[Z,W]) this will find H(X,Y/Z,W).. you can use it for any combination of joint entropies Please validate this function before using it

实现AWGN信道下，QPSK调制解调，系统的误码率(Achieving AWGN channel QPSK modulation and demodulation, the BER)

有客户端的聊天软件，可实现网络通讯，对于了解网络编程有帮助(A client chat software, network communications, network programming help for understanding)

简单的OOK调制程序，很不错的哦，大家来吧！(Good OOK modulator program)

说明：  在瑞利信道中，对于OFDM信号设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线(In Rayleigh channel, a specific guidance aided channel estimation method is designed for OFDM signal, and the simulation is carried out with Simulink to measure the BER performance of BPSK modulation. The relation curve between bit SNR and channel estimation mean square error is drawn, and the relation curve between bit SNR and bit error rate is drawn)