(muPlambda)-CDE

suppression of echo by using lms code

直接序列扩频通信系统的仿真，信道中加入高斯白噪声，扩频比为512，调制方式为BPSK。扩频序列可选m序列或者Gold序列，编码方式可选不编码或者卷积编码。(Simulation of direct sequence spread spectrum communication system, the channel joined the Gaussian white noise, the spreading ratio is 512, the modulation scheme is BPSK. Spreading sequences m sequence or Gold sequence selectable, optional coding or non-coding convolution coding.)

LDPC编译码实现，包含编译码原理以及实现方法(LDPC encoding and decoding implementation, including encoding and decoding principle and implementation)

用Matlab仿真四元LDPC码并得出误码率曲线图。(Simulation quad LDPC codes in Matlab and draw BER curve.)

说明：  现代谱估计的源程序，包括直接法，间接法和窗函数法(Modern Spectral Estimation of source, including direct, indirect method and the window function method)

this file inculede CDMA codes and implemantion

这是一个求离散时间序列的功率谱的程序，是通过全波傅里叶变换来求的(This is a demand of the power spectrum of the discrete-time sequence program is through the full-wave Fourier transform to seek)

光学单缝衍射是光学中经常用到的实验，该实验能够很好地模拟光学实验，希望各位好好下载，不懂跟我联系(Single slit diffraction )

利用共轭梯度法，追赶法，龙格库塔法来求解问题的源程序，适用于计算方法初学者(The source program of using conjugate gradient method, pursuit method and Runge Kutta method to solve the problem is suitable for beginners of computational methods.)

IMAGE_SORT Sorts the given data points (pixels of an image)in the data_ordered array