PSNR

说明：  本程序运行需一个小时左右。优化准则是旁瓣电平最小。取栅格间距为lemda/2,阵元间距为栅格间距的整数倍。放阵元的位置放1，否则放0(This program should be running an hour or so. Rule of optimization is side-lobe level minimum. Take grid spacing for lemda/2, spacing for grid spacing array (integer times. Put the position of the array (put 1, otherwise put 0 )

本程序用以仿真块状导频时不同信噪比条件下的误码率和均方误差，信道估计采用最小二乘法和改进的最小二乘法。 (The pilot program for the simulation block different SNR when the bit error rate and mean square error channel estimation using the least square method and the improved least square method.)

matlab与vc混和编成(Matlab and the mixture into vc)

huffman table and direction

说明：  现代通信系统(MATLAB)版本，作者：普罗克斯等著，刘树棠译。本书采用MATLAB作为“虚拟实验室”，给出了解决“现代通信系统”课程中涉及的各方面问题的分析思路、方法、MATLAB脚本（或程序）文件和处理结果示例(Modern communication systems (MATLAB) version of: Proulx waiting, Liu Shutang translated. This book uses MATLAB as a &quot virtual laboratory&quot , presented to solve the &quot modern communication systems,&quot course involved in all aspects of the analysis of ideas, methods, MATLAB script (or program) file, and Chu Li Jieguoshili)

基于matlab的FIR滤波器设计工具箱，及其使用说明。工具箱内具有超多优化工具：sdpt3/Sedumi等(FIR Filter Optimization Toolbox User s Guide Version 2.0)

基于粒子群算法的PID控制器的设计与研究(Tuning of Digital PID Controller Using Particle Swarm Optimization)

数值微分精度及步长的关系，截断误差和舍入误差，体会误差对结果的影响，用算法1 和算法2 分别得到的结果进行比较，由Taylor公式可得到两种算法的截断误差(Accuracy of numerical differentiation and the relationship between step length, truncation error and rounding error, the error on the results of experience with algorithm 1 and algorithm 2 respectively, to compare the results obtained by the Taylor formula for the truncation error of two algorithms available)

matlab求最下的外接矩形的程序，很好用的，只要把图片名字改了就可以运行！(GOOD)

The number π is a mathematical constant that is the ratio of a circle s circumference to its diameter and is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes romanized as "pi