Chaos-sequence

利用M函数仿真扩频通信系统。6个用户的CDMA的同步通信系统，每个用户利用L＝31的Gold码，进行扩频，信道为AWGN信道，接收端利用匹配滤波器进行检测。绘出当N＝10000个发射比特下，SNR＝0：15（dB）时的误码率曲线。 (M function simulation using Spread Spectrum Communication System. 6 simultaneous users of CDMA communication system, each user of the L = 31 the use of Gold codes for spread spectrum, channel for the AWGN channel, the receiving end to detect the use of matched filter. Drawn when N = 10000 bits of transmission, SNR = 0:15 (dB) when the bit error rate curve.)

改变声音信号采样频率。应分别考虑由低到高和由高到低，最好包括声音采集和回放等功能。(To change the audio signal sampling frequency. Should be considered separately from low to high and high to low, preferably including audio capture and playback functions.)

画图时，将图形局部放大，很实用的代码，以前上传过一个m文件，上传错误了，现修正。(When drawing the graphic enlarged, very practical code previously uploaded an m file upload error, now corrected.)

This program performs canny edge detection. (MATLAB code)

Computer Networking - Go Back N

有限差分法的Matlab程序（椭圆型方程）,用有限差分法求解矩形域上的Poisson方程(Finite difference method in Matlab (elliptic equations), the finite difference method for solving the Poisson equation on a rectangular domain)

这个程序是王永良的空间普估计理论与算法中的幅相误差校正中自校正算法，找了好久找不到源程序，此程序是本人亲自编写，此方法的缺点是容易陷入局部最优解，具体看程序仿真图(This program is estimated Pu Wang Yongliang space theory and algorithms of amplitude and phase error correction in self-calibration algorithm, for a long time could not find the source, this program is a personally written, the disadvantage of this method is easy to fall into local optimal solution, specifically to see the program simulation map)

连续相位调制信号(CPM)产生，抑制载波型差分相位调制，可直接计算得到多重分形谱。( Continuous phase modulation signal (CPM) to produce, Suppressed carrier type differential phase modulation, It can be directly calculated multi-fractal spectrum.)

matlab电机仿真精华500例，学习电机仿真 (matlab simulation essence 500 cases of motor learning motor simulation)

LDPC译码算法，采用LOG方法，减少计算复杂度(LDPC decoding algorithm used LOG, to reduce the computational complexity)