communication_systems_with_matlab_codes

Create Line 3d to connect between two planes

Matlab程序 滤波器的设计 直接设计IIR滤波器(IIR filter design)

说明：  采用通道差的引导滤波进行大气光估计和明暗通道混合的夜间去雾(The guiding filter of channel difference is used for atmospheric light estimation and night defogging with mixed light and dark channels)

一个很有用的程序，供做算法研究人员参考，GPS和INS组合导航程序，有CDF三角函数曲线/三维曲线图，Relief计算分类权重，Matlab实现界面友好。

说明：  本源程序为语音信号短时傅里叶变换分析 包括加窗 分帧处理(The source for the voice signal short-time Fourier transform analysis includes windowed sub-frame processing)

图像小波去噪程序，帮助处理模糊的图像文件，出去噪声，提高分辨率。(Wavelet denoising procedure to help deal with the blurred image files, out of the noise and improve resolution.)

this uploaded fle actually contains all the files privioulsy uploaded sepatately

labview的 正交幅度调制（QAM）( quadrature amplitude modulation (QAM) )

利用MATLAB实现OFDM的发送和接收，QPSK调制、串并转换、IFFT变换、添加循环前缀，并且给出频谱图(Using MATLAB to transmit and receive OFDM, QPSK modulation, series-to-parallel conversion, IFFT transformation, adding cyclic prefix, and giving the spectrum.)

说明：  利用matlab实现高斯分布、指数分布、正太分布等概率分布的方法。(Using matlab to achieve Gaussian distribution, exponential distribution, is too distribution probability distribution method.)