Introduction-to-CDMA

it is cluster4 matlab code

水声通信信道参数的生成以及水声信道的仿真，该包内包括set_channel_params.m和channel_simulator.m两个函数。仿真器包含了大规模和小规模衰落两种。(This package consists of Matlab codes set_channel_params.m and channel_simulator.m and a series of Matlab functions that will be called by the main codes. )

插值法处理图像包含最近邻，双线性，双三次插值法处理图像(Interpolation processing image contains nearest neighbor, bilinear, bi-cubic interpolation image processing)

This program do the k-means based clustering. Test on 9888 data points

用matlab编写的三维FDTD计算源代码，简洁清楚(three-dimension code of FDTD)

polor plot with matlab

说明：  设计巴特沃斯型、椭圆、切比雪夫数字低通滤波器，并对加入噪声的图像进行滤波(design Buttetworth、cheby1 and ellip LF,and use these filters in image processing.)

经验模态分解（EMD），对imf进行分析，再采用类小波阈值去噪。(Empirical Mode Decomposition (EMD), were analyzed for the imf, then using class wavelet thresholding.)

使用MATLAB 代码完成COSTAS环对QPSK调制的解调载波频率的跟踪(Use MATLAB code completion COSTAS loop tracking of QPSK modulation carrier frequency demodulation)

引力搜索算法源代码，matlab实现，简单易懂，适合初学者。(Gravitational search algorithm function optimization)