polinverter2

网上最好的project书籍，对你学习使用project这个软件有很大的帮助。(The best project books online, you learn how to use the software project of great help.)

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

光通信新技术的简介：光接收机和光检测机的详细讲解好描述。(optics fiber communications)

calculates fourier descriptors

张德丰《MATLAB 小波分析》一书中所有实验的源代码，希望对大家有所忙住啊！(Zhang Defeng " MATLAB wavelet analysis" book, the source code of all the experiments, we hope to busy live!)

homework 3-2 is difficult

该文件中包含信息论中的一些信息熵、互信息的计算。(The file contains some of the information entropy in information theory, mutual information calculation.)

简单明了的光束传播方法，计算自由空间光传播，使用FFT算法，在matlab中简单实现。(two step beam propagation method with FFT)

说明：  这是用小波变换模极大值重建信号的源程序，数据是一心电信号，在matlab6。5下实现，来源于胡广书的《现代信号处理教程》附属光盘，现提供给大家供大家学习参考，滤波部分可以根据个人情况进行修改。程序包含四个部份，其中wave_peak实现信号的分解并求出模极大值(This is the wavelet transform modulus maxima reconstruction of the source signal, data signal is bent in matlab6. 5 under, and from the HU-book "modern signal processing Guide" CD subsidiary, it is available to everyone for your study reference, filtering can be part of the personal changes . Procedures include four parts, with wave_peak signal decomposition and sought modulus maxima)

用C语言编写的在Simulink环境下对3相交流逆变器进行数值仿真的S函数源代码。该仿真源代码的一个独特之处就是：利用全新的数学模型能够对逆变器相间换流的动态过程进行仿真，这是目前其它同类模型中绝对没有的独特支出，可以用来精确仿真永磁无刷直流电机转矩的动态特性，执行效率很高。(C language in the Simulink environment for three-phase inverter for the numerical simulation letter S several sources. The simulation source code a unique way : the use of new mathematical model to the phase inverter for the dynamic process flow simulation, This is similar to other models, there is no unique expenditures, Simulation can be used for precision brushless DC motor torque to the dynamic characteristics of high efficiency.)