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这个例子将产生并显示pi/2 DQFSK系统中的一些重要信号，仿真这个系统并产生图形输出的MATLAB程序在文件夹中给出。在MATLAB的命令提示符下输入程序名c8-pi4derno后，会绷现一个菜单，用户可通过这个菜单选择以下七个选项中的一个（产生一个图形后，击空格键会显示菜单以便作另一个选择） 1.滤波前的pi/4 DQPSK信号星座图 2.滤波前的pi/4 DQPSK眼图- 3.滤波后的pi/4 DQPSK信号星座图 4.滤波后的pi/4 DQPSK眼图 5.滤波前的同相和正交信号 6.滤波后的同相和正交信号 7.退出程序(返回MATLAB命令提示符) 读者应该仔细研究文件夹中的内容，因为它阐明了很多常见的后处理过程，而且，产生各种图形的代码可用于其他仿真程序的后处理器。 (It is very difficult to describe the MATLAB procedure in english.)

Please vote:This code generates both fibanocci and non fibanocci sequences upto user specified limit and writes the output onto text file.

帧内预测编码，已调试成功，垂直预测，其他预测方式可进行相应的修改(Intra prediction coding, debugging has been successful, the vertical prediction, other prediction methods can be amended accordingly)

在多径瑞利衰落信道下，采用理想信道估计，Rake接收，仿真该系统在不同SNR下的信源误比特率性能，分析系统性能(In multipath Rayleigh fading channels, using the ideal channel estimation, Rake reception, simulation of the system at the source under different SNR BER performance, analyze system performance)

Source to solve a partial differential diffusion equation

matlab小程序，色散参量D和群速度色散参量beta2转化(Matlab small program, dispersion parameter D and group velocity dispersion parameter beta2 transformation)

this is sample test for Z bus algorithm

NSGA2 解决多目标优化问题，在MATLAB下编程实现，包含注释(A multi-objective optimization)

xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。 仿真框架为： 1.标记信号和双音信号续接作为发送信号； 2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号； 3.用一个检测信号对收发信号进行相关运算； 4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点； 5. 输入0相位点位置，计算相对相位差。(xwch_test.m is the main test file biaoji.mat store filter coefficients xiangweicha.m calculated using FFT phase difference. Simulation framework: 1. Mark signals and then as a two-tone signal continued to send signals 2. On a two-tone frequency components of the phase shift to do, and then through a low pass filter (the introduction of linear phase, simulation can not simultaneously send and receive measuring the phenomenon), the as received signal 3. using a detection signal of the transceiver signal correlation operation 4. draw send and receive signals and related processed signal. Correlated signal of the cusp, which calculate the two-tone signal transceiver 0 phase point 5. Enter 0 phase point position, calculate the relative phase difference.)

DCAC converter that convert DC to AC current with an PWM controle technique