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这是ofdm的MATLAB仿真源程序，很好用(This is the MATLAB simulation ofdm source, useful)

removal of both powerline interference and base line wander

说明：  计算弯曲线天线的频率特性，画出驻波比图（可通过更改天线几何参数计算需要的特性）(Calculation of bending wire antenna frequency characteristics, draw standing-wave ratio map (available by changing the antenna geometry parameters need characteristics))

Compare the response of SDOF system in terms of damping ratio.

基于matlab的随机数的生成，包括其他调用的函数，(Random number generation based on MATLAB, including other call function )

美国航空航天局AVIRIS数据介绍PPT，以及免费数据下载地址(NASA AVIRIS data presentation and data Download free)

commmunication develop in 4g

干扰可分为窄带和宽带，本程序主要针对宽带干扰信号进行编写(Interference can be divided into narrowband and broadband, the program is aimed at a broadband signal BPSK modulation )

电力系统潮流计算，基于BX快速解耦算法，对IEEE14节点标准拓扑网络进行检测，能够正确快速地计算出结果。(Power flow calculation based BX fast decoupled algorithm, IEEE14 standard topology network node detection, able to correctly calculate the results quickly.)

我国是世界上小麦种植面积最大和消费最高的国家之一。小麦为国际主粮之一，也是食品工业的重要原料。作为最重要粮食品种之一的小麦，其价值与用途取决于它的品质。因此，基于信号处理技术，研究客观、便捷的小麦品质测定方法对提高小麦品质、减少产后损失、保证国家粮食安全具有十分重要的意义。本课题拟在研究、分析国内外无损检测技术在农产品品质分析应用现状和研究进展的基础上，研究小麦籽粒声信号的预处理方法。根据声学检测原理，研制出小麦籽粒的声信号采集装置，首先采集小麦籽粒下落碰撞所产生的声音信号，对小麦声信号进行编辑和预处理，实验结合信号处理技术及MATLAB软件，对单粒小麦样品的声信号进行谱估计和小波变换，提取出时域和频域特征参数，为探讨小麦声学特性与其品质指标的关系奠定基础。本论文利用MATLAB软件编写小麦声音信号预处理程序，通过对小麦籽粒声信号进行处理，成功的提取出了有效的时域、频域的多种特征参数，为研究其声学特性与小麦品质内在的关系，做了充分的准备工作。(China is one of the countries in the world which has the largest wheat growing area and highest consumption. Wheat is one kind of the staple food in the world and also an important material for food industry. The value of wheat and its use all depends on is quality, To enhance quality of wheat,readuce post harvest loss and ensure grain security, great efforts should be made to develop rapid, objective, and easy methods for assessing wheat quality using signal processing techniques. This paper do the research of wheat signal preconditioning method and it basis of analysis domestic and foreign non-destructive testing technology.According to acoustic detection theory,an equipment of obtaining wheat sound signals is developed. Collecting the dropping voice signals of different varieties of wheat samples.And then do editing and sound signal preprocessing on wheat through signal processing technology.This paper do some research about spectrum estimate and wavelet transform on single wheat wi)