登录
首页 » matlab » 2

2

于 2012-05-13 发布 文件大小:12KB
0 175
下载积分: 1 下载次数: 0

代码说明:

说明:  ofdm_code simulator (OFDM code simulation)

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • 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
  • mark_minutia
    mark_minutia for fingerprint
    2012-09-05 17:15:53下载
    积分:1
  • Simulation-of-radar-system
    一种雷达系统建模与matlab仿真,具体介绍了MATLAB的仿真(Modeling and Simulation of radar system )
    2014-01-17 21:05:44下载
    积分:1
  • matlab-linearizati
    matlab 灰度图像线性化,直方图均衡化相关成语,均可运行。(matlab grayscale image linearization, histogram equalization idioms can run.)
    2012-11-25 19:09:13下载
    积分:1
  • baiguangyanshe
    白光衍射很好的matlab仿真程序,可以运行实现的。(Bai Guangyan shoot good matlab simulation program can be run to achieve.)
    2013-11-12 10:48:34下载
    积分:1
  • 2
    说明:  对初学MATLAB的人员,可有作用,也很管用,特此共享。( To personnel who begins studies MATLAB, may have the function, is also effective very much, shares specially )
    2010-10-24 23:48:31下载
    积分:1
  • FFT2
    用matlab实现FFT,不是用matlab自带的函数fft,而是自己重新编程(Matlab implementation with FFT, not the native function with matlab fft, but his re-programming)
    2011-01-11 16:55:20下载
    积分:1
  • makeFROG
    说明:  模拟光纤中光的行为,是FORG的一部分,有参考价值(light characteristics in fiber lasers,very useful)
    2011-03-16 15:39:44下载
    积分:1
  • zrq
    潮汐调和分析关于无潮点及潮流方向与潮时的计算与分析。(Tidal wave of harmonic analysis on non-point and the trend direction and tide calculations and analysis.)
    2011-05-27 19:06:32下载
    积分:1
  • dtc
    direct torque documentation
    2013-11-03 17:42:11下载
    积分:1
  • 696518资源总数
  • 105885会员总数
  • 31今日下载