huishe

扩展功能的DFT，可以自动扩展输入序列X，如果你输入的长度不足N，会自动以NaN补足(Extension of the DFT, can be automatically extended input sequence X, if you enter a length less than N, will automatically fill in NaN)

平差辅助函数，用于平差过程中需要使用的函数模型(Adjustment helper function for function model adjustment process requires the use of)

本文是基于3路径的rake接收机，在高斯噪声下的三种合并方式的误码率比较。(This article is based on the path of the rake receiver 3, in the three combined Gaussian Noise BER comparison approach.)

 它是以简明方法写就的一本易于掌握的数学手册；  编写逻辑性强，内容由浅入深，对于初学者能很快掌握MATLAB的用法；  易于查找命令和问题，给读者灵感与启迪，以解决实际问题；  对每一条命令，都进行了详细论述；  对于每一条命令，几乎都有易懂的实例；  内容按数学分类进行描述。 ( It is a simple way to write on the one easy to learn math handbook  write logic is strong, the contents of Deep and MATLAB for beginners to quickly master the use of  easy to find commands and questions, giving the reader inspiration and inspiration to solve practical problems  on each order, are discussed in detail  For each command, almost all examples of easy to understand  content described by mathematical classification.)

利用matlab实现简易的MIMO系统仿真，其中包括AWGN信道和瑞利信道的2发2收有无信道编码的比较，以及1发2收。(Using matlab to achieve a simple MIMO system simulation, including the relatively AWGN channel and Rayleigh channel of the two 2 admission with or without channel coding, as well as a 2 admission.)

tangent bug is usefull for use it

An ideal SM control operates theoretically at an infi nite switching frequency so that the trajectory follows exactly the reference track

说明：  一些关于mimo预编码的基础知识以及一些主要的预编码方法

说明：  基于MATLAB和DSP实现的FIR数字低通滤波器(Implementation based on MATLAB and DSP FIR digital low-pass filter)

matlab程序求图像的梯度，获得图像的纹理信息丰富的点或边缘点、角点等。(to get the gradient of mage, the image texture information rich points or edge, corner, etc.)