Cognitive Radio matlab code

book test book test book

利用MATLAB软件对OFDM系统做出仿真。仿真中采用QPSK调制技术，并加入高斯白噪声，最终得到QPSK星座映射图以及BER曲线图。由仿真结果可以看出，OFDM在高斯信道具有良好的抗噪声性能，误码率较低。(MATLAB software is used to simulate the OFDM system. In the simulation, QPSK modulation technology is used, and Gauss white noise is added, and the map of the QPSK constellation and the BER curve are finally obtained. It can be seen from the simulation results that OFDM has good anti noise performance and low error rate in Gauss channel.)

里面是一些硬件资料，蓝牙音箱的demo板，有需要的可以看下(There is some hardware information, Bluetooth speaker demo board, there is a need facie)

Test for DatagramChannel Source Code for Andriod.

适应多个模式的rs编码，Verilog，选择对应的多项式(RS coding adapted to multiple modes.)

在高斯白噪声信道和莱斯信道下调制方式为qpsk的基本通信系统的误码率仿真 (In the Gaussian white noise channel and Rice channel qpsk modulation method is the basic communication system BER simulation)

对数字通信作简要介绍，有一定参考价值，适合通信相关开发人员(Digital Communication related)

说明：  分数阶傅里叶法对LFM信号进行检测和参数估计的参考文献，可以参考原理。(The reference of fractional Fourier method for LFM signal detection and parameter estimation can refer to the principle.)

计算多重分形非趋势波动分析matlab程序,图像的光流法计算的matlab程序,ldpc码的编解码实现。( Calculation multifractal detrended fluctuation analysis matlab program, Image optical flow calculation matlab program, Codec ldpc code implementatio.)

提供通讯录成员的查询、增加、更新及删除等功能。(Provide contacts membership query, add, update, and delete functions.)