ofdma

MATLAB code for Kinematic simulation

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

在计算雷达损失时，只有当目标位于天线的垂直轴线时才能得到最大天线增益，本程序给出天线辐射方向图，在不同辐射角度下天线增益情况。(In the calculation of the radar losses when, and only when the destination is located in a vertical axis of the antenna to obtain the maximum antenna gain, the procedures given in the antenna radiation pattern, the antenna gain in the different radiation angles.)

电话拨音信号的合成与识别，matlab下GUIDE界面，已编译通过(Telephone dial tone signal synthesis and recognition, matlab under GUIDE interface, compiled by)

带simth补偿的pid控制器主要用于纯滞后系统的pid温度控制，属于改进型的pid控制器。本simulink仿真为毕业设计内容，运行效果良好。本例设定温度200度，参数之类可以根据需要自由修改(Smith compensation with pid controller mainly used for pure delay systems pid temperature control, are improved pid controller. The simulink simulation content for the graduation project, run well. In this case temperature of 200 degrees, like the parameters can be modified according to need freedom)

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说明：  spwvd算法的程序代码，非常实用 在毕设中需要用到跳频信号的应该都能用到该代码(Smooth pseudo Wigner distribution)

这是“受控自回滑动平均模型”CARMA非线性系统的随机梯度辨识算法，用于参数估计以及模型建模。(This is a " controlled slide back the average model" CARMA nonlinear system stochastic gradient identification algorithm for parameter estimation and modeling.)

unit conversion file in simulink

本软件是伯南克提出时变的因子扩展VAR模型，能够考察变量间的冲击效应，及其结构变化特征，克服通常VAR的变量少等缺陷。(This software is the factor Bernanke proposed changing the extended VAR model, to study impact effect among the variables, and structural changes, less often overcome VAR variable defects.)