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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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shiyan1_2
采用积分器方法在 SIMULINK 上建立微积分方程的模型
(Modeling methods using integral calculus equations on SIMULINK)
- 2015-02-14 23:09:27下载
- 积分:1
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3.19 基于Kalman滤波的目标跟踪
说明: 对目标图像处理进行后,可以对目标进行追踪,卡尔曼滤波模型是目标追踪中常用的代码(After image processing, the target can be tracked. Kalman filter model is a common code in target tracking.)
- 2019-04-21 15:48:54下载
- 积分:1
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LS-SVMlab1.5bl
可以供在SVM门口的初学者早日入门,这些都是最基本的SVM程序,但是也比较专业,希望有需要的人使用(SVM can be at the door for an early entry for beginners, these are the most basic SVM procedure, but more professional, I hope the person has required the use of)
- 2009-03-14 14:17:10下载
- 积分:1
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MATLAB
本代码是在matlab平台上对数字进行检测识别(This code is in matlab platform for detection of digital identification)
- 2008-05-23 22:57:56下载
- 积分:1
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power_wind_dfig_data
说明: 风能发电系统的MATLAB simulink 仿真模型,用于对不同风速下电力感应电机的反应输出特性的分析。(Wind power generation system MATLAB simulink simulation model for different wind speeds the power output characteristics of the response of induction motor analysis.)
- 2010-03-24 14:13:52下载
- 积分:1
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nihe
这里讲述的是matlab的函数拟合问题,含有多个程序可提供给大家参考参考
(About matlab function fitting, containing a number of procedures are available to everyone REFERENCES)
- 2013-04-26 23:16:34下载
- 积分:1
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MoCapToolbox_v1.4
人体运动捕捉数据处理工具箱,很多丰富的库函数可供调用。(Human motion capture data processing toolbox, many rich library functions available for calls.)
- 2021-01-24 13:28:43下载
- 积分:1
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QoSfactors
详细阐述了设计通信网络仿真环境里的各个参数,如带宽,延迟,掉包率,等等因素,这里的网络包括了WLAN,3G以及各种业务所需的基本条件(Detail the design of communication network simulation environment, all parameters such as bandwidth, delay, substitution rate, among other factors, where the network includes a WLAN, 3G, and the basic conditions required for various services)
- 2010-06-08 19:03:54下载
- 积分:1
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five-level-diode-clamp-inverter-dynamic-voltage-r
five level diode clamp inverter dynamic voltage restorerfive level diode clamp inverter dynamic voltage restorerfive level diode clamp inverter dynamic voltage restorer
- 2013-10-25 03:39:28下载
- 积分:1