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找到的编写的CDMA通信系统的仿真程序，发上来分享一下，同时附带具体的程序说明文档。(Found in the preparation of the CDMA communication system simulation program, a table to share, at the same time attached to the specific procedure documentation.)

说明：  一个有关matlab解决最小二乘法函数lsqcurvefit的简要介绍，网上找的，分享了。。。(Matlab solve a least squares lsqcurvefit function of a brief introduction, on-line to find and share.)

直接序列扩频就是直接用具有高码率的扩频码序列在发端去扩展信号的频谱。而在收端，用相同的扩频码序列去进行解扩还原成原始的信息。(Direct Sequence Spread Spectrum is the direct use of the spreading code sequence with a high rate in the originator to expand the spectrum of the signal. Receiving end, using the same spreading code sequence to despread the broadening of the spread spectrum signal to restore the original information.)

The file introduces a method for maximum power point tracking of a photovoltaic array by incremental conductance.

非常经典的分数阶傅里叶变换源程序，经测试，无问题(frft)

matlab 课程实习 第六章 答案 附源码(Chapter Answers with source matlab internship programs)

在Matlab中运用边缘提取的方法，对图像中的特征图形进行边缘提取(By using the methods of edge extraction in Matlab, the edge feature extraction of graphic image of the)

一个用S函数写成的在dq坐标系中的双馈异步电机模型。(An S function written using dq coordinate system in the doubly-fed induction motor model.)

matlab在信号与系统中的应用，连续信号的matlab描述，LTI系统的零输入响应，n阶LTI系统的响应，(matlab in Signal and System, continuous signal matlab description, LTI system, the zero-input response, n-order LTI system response,)

用Matlab仿真的基于DRFM的等间隔直接转发干扰，内有时域和频域分析。(Matlab simulation with equal intervals based drfm forwarded directly interfere, sometimes within a domain and frequency domain analysis.)