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interference-cancelllation-in-cognitive-radio
This is a program to illustrate the interference cancellation in cognitive radio
- 2013-11-21 20:04:58下载
- 积分：1
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OFDM rece matlab
接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构，以及定时估计，频偏估计，剩余误差跟踪的算法可参考算法说明文档。这里对程序的流程进行说明。
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。
(The receiving end uses the algorithm and the program flow and the frame structure of the OFDM symbol transmitted by the sending end. Specific frame structure, and timing estimation, frequency offset estimation, residual error tracking algorithm can refer to the documentation. Here to illustrate the process of the program.
First, according to the characteristics of the short training word correlation operation, the signal reaches the detection, when the correlation value is greater than the threshold of a certain number of times, that there is a signal to reach. Then, according to the characteristics of the long training word, the correlation operation is carried out, and the initial position of the OFDM symbol FFT is estimated. The estimated position of the FFT window, first in the time domain for small frequency offset estimation, two long training word for small frequency offset compensation, the FFT operation. According to the result of FFT for integer frequency bias estimation. Af)
- 2020-11-05 00:19:52下载
- 积分：1
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01
说明： 1.1 MATLAB软件介绍
1.1.1 MATLAB发展进程
1.1.2 MATLAB的基本功能
1.1.3 MATLAB语言的特点
1.1.4 MATLAB R2011a的新功能
1.2 MATLAB安装与运行
1.3 MATLAB的运行环境
1.3.1 命令窗口
1.3.2 历史命令窗口
1.3.3 工作空间
1.3.4 当前文件夹
1.4 MATLAB帮助文档
1.4.1 帮助窗口
1.4.2 帮助命令
1.5 变量
1.6 矩阵
1.6.1 矩阵创建
1.6.2 数列创建
1.6.3 矩阵的基本运算
1.7 高维矩阵
1.7.1 创建高维数组
1.7.2 高维数组操作函数
1.8 演示MATLAB
1.9 小波分析概述
(1.1 MATLAB Software
1.1.1 MATLAB development process
1.1.2 MATLAB basic functions
1.1.3 MATLAB language features
1.1.4 MATLAB R2011a new feature
1.2 MATLAB installation and operation
1.3 MATLAB runtime environment
1.3.1 Command Window
1.3.2 History Command Window
1.3.3 Workspace
1.3.4 Current folder
1.4 MATLAB help documentation
1.4.1 Help Window
1.4.2 Help Commands
1.5 Variables
1.6 Matrix
1.6.1 Creating Matrix
1.6.2 series created
1.6.3 Basic operation matrix
1.7 high-dimensional matrix
1.7.1 Creating high-dimensional arrays
1.7.2 High-dimensional array manipulation functions
1.8 demo MATLAB
1.9 Overview of Wavelet Analysis
)
- 2013-10-19 16:32:28下载
- 积分：1
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Ricecount
数米粒，matlab编程实现图片中米粒边缘的提取，然后实现连通域的标记，最后统计连通域个数(Number of rice, matlab programming rice extract picture edges, then realize marking connected domain, the number of connected domains final statistics)
- 2013-12-01 19:34:24下载
- 积分：1
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Gaexample
遗传算法-优化算法-模板-可以供学习参考(Genetic algorithms- Optimization- Template)
- 2014-01-13 14:38:47下载
- 积分：1
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reco_toolx
video scence recognition tool in matlab
- 2013-11-11 22:54:25下载
- 积分：1
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C_Means
K均值聚类是模式识别中非常重要的一种方法，通过K均值聚类可以将具有相同属性的元素进行聚合。(K-means clustering is a very important one in the pattern recognition method, polymerization by K-means clustering with the elements of the same property.)
- 2012-05-03 21:35:33下载
- 积分：1
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fir
用窗函数法设计一个线性相位FIR数字低通滤波器(With a window function method to design a linear phase FIR digital low-pass filter)
- 2011-11-01 01:17:36下载
- 积分：1
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FLch2sjxleg1
系统辨识及其MATLAB仿真,随机序列产生程序(System Identification and MATLAB simulation, random sequence generator)
- 2013-11-13 15:46:11下载
- 积分：1
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AMBsimulation
用最优控制原理来控制五自由度无轴承电机（竖立，转子的上、下部各放置四个电磁铁，z轴为竖立方向的控制先不考虑，只考虑，x，y轴方向的稳定)(Using optimal control theory to control the five degrees of freedom bearingless motor (erected on the rotor, the lower part of the placement of four electromagnets, z-axis direction control for the erection of the first not considered, only the, x, y-axis direction of the stable))
- 2020-09-23 10:57:50下载
- 积分：1
