zero_pad

包括DS-CDMA 的衰落信道函数，多径衰落信道以及快衰落信道函数。(Including DS-CDMA in fading channel function, multi-path fading channel and fast fading channel function.)

Three thing are there and it is here

I want to sent a good PSO codes for matlab

As all of you know, MATLAB is a powerful engineering language. Because of some limitation, some tasks take very long time to proceed. Also MATLAB is an interpreter not a compiler. For this reason, executing a MATLAB program (m file) is time consuming. For solving this problem, Mathworks provides us C Math Library or in common language, MATLAB API. A developer can employ these APIs to solve engineering problems very fast and easy. This article is about how can use these APIs.

QR码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了应用,并具有很大发展潜力.本文针对QR码图像的识别过程中可能遇到的图像噪声干扰、QR码占实际拍摄图像的一部分、倾斜、几何失真等问题进行了研究,提出了通过改进型中值滤波去除噪声,使用QR码符号特性定位并对倾斜图像进行旋转,对失真不严重的图像采用控制点变换和双线性插值方法进行几何校正.实验证明, 本文的方法简单有效, 可以用于提高条码的正确识别率.(As a high-speed, full identification of the two-dimensional bar code, QR code has been applied in all walks of life, and also has great potential for development. In this paper, aiming at QR code image recognition process may be encountered in noise interference, QR code accounting for the actual captured image just a part, slant, geometric distortion, and other issues have been studied, put forward through improved median filter to remove noise, use QR code symbol characteristics to locate and rotate the tilted image, distortion which is not serious use control-point transform and spatial bilinear interpolation method for geometric correction. The results show that this method is simple and effective, can be used to improve the QR code correct recognition rate.)

说明：  轮廓波工具箱，是一个非常有用的图像分解和合成变换(contourlet toolbox)

说明：  光伏电池模型 基于温度和光照强度的电池模型 非常好用(pv model)

MATLAB Codes for Finite Element Analysis Solids andS tructures

recursive least square (RLS) algorithm using matlab with examples

无线通信系统发射端仿真中，脉冲成型滤波器。是一种根升余弦滤波器。(A pulse shaping filter in the wireless communication system. It is a root raised cosine filter.)