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OFDM
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)
- 2020-11-04 23:49:52下载
- 积分：1
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Rotordynamics_Prediction_in_Engineering
这本书是很好的。第一次遇到转子动力学的人应该看这本书。尤其是研究有限方法的人。(This book is very good. Those who encounter rotor dynamics for the first time should read this book. Especially those who study limited methods.)
- 2020-07-02 23:00:01下载
- 积分：1
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Matlab_0
MATLAB在数字图像处理中的应用
MATLAB在数字图像处理中的应用(MATLAB in Digital Image Processing MATLAB in Digital Image Processing Application)
- 2009-01-18 18:16:43下载
- 积分：1
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gpsofunc
matlab环境下书写的PSO的GPSO算法附有引用函数(matlab environment, written in PSO algorithm with reference to the function of GPSO)
- 2009-10-23 00:57:30下载
- 积分：1
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work
关于三相SVPWM仿真的模型，我做电力电子仿真作业的一道题，花了很多时间下载和阅读文献，最后总算成功了，只是仿的结果有点慢，一直找不到为什么。
注意：此模型仿真时需要svpwm.m这个文件，并且matlab软件版本为Matlab7.1。(About three-phase SVPWM simulation model, I do the job of power electronic simulation of a question, spend a lot of time to download and read the literature, but finally succeeded, but the result of imitation of a little slow, could not find why. Note: This model simulation requires svpwm.m this file and matlab software version Matlab7.1.)
- 2011-04-25 16:53:53下载
- 积分：1
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viterbi(matlab)
信道解码viterbi算法的matlab实现，详细(channel Viterbi decoding algorithm Matlab details.)
- 2007-06-14 21:29:14下载
- 积分：1
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GDOP_6_CD
多星座导航系统GDOP递推特性的仿真程序,程序主要是争对在现有系统中增加2颗其他星座的可见星时GDOP的变化情况组合仿真(GDOP combination of changes in multi-constellation navigation system simulation GDOP recursive feature of the simulation program, the program mainly to fight for increased two existing constellation of visible stars in the existing system...)
- 2015-03-13 10:47:01下载
- 积分：1
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chafen
MATLAB，用的是背景差分和实时背景更新(MATLAB, using background subtraction and real-time background update)
- 2015-03-17 16:25:59下载
- 积分：1
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codes
Modified LLL (MLLL) Lattice Reduction Algorithm
Original Paper: A Customized Lattice Reduction Multiprocessor for MIMO Detection
by Shahriar Shahabuddin et. al.
- 2015-04-11 05:07:17下载
- 积分：1
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MATLAB-GUI
本书由浅入深、循序渐进地介绍了GUI设
计的基础知识和技巧,旨在使读者在较短时间内熟练掌握GUI设计的精要所在(Book Deep, a gradual introduction to the GUI based
Account the basic knowledge and skills designed to enable readers to master the essence of GUI design in a relatively short period of time)
- 2012-05-01 11:10:14下载
- 积分：1
