OFDM

说明：  Python异步IO模块源代码，众所周知Python由于全局锁的问题在多线程支持上存在弊病，通过异步可有效提升效率(Python asynchronous IO source code)

信道为瑞利信道，S_D的距离为1米，三跳协作通信系统中S_R、R1_R1、S_D的距离均为1/3米。调制方式为BPSK,信噪比在-15dB-15dB间，接收端合并方式为ERC,迭代次数为1000(The channel is Rayleigh channel, the distance of S_D is 1 m, and the distance of S_R, R1, S_D in three-hop cooperative communication system is 1/3 M. The modulation mode is BPSK, the signal-to-noise ratio is between - 15dB and 15dB, the receiver merge mode is ERC, and the number of iterations is 1000.)

利用Matlab实现的二维TDOA定位算法仿真程序。。(2D TDOA algorithm implemented by Matlab simulation program. .)

介绍了在移动通信系统中对抗多径衰落的一种重要技术——分集接收技术，并分析了各种分集、合并技术的优缺点，提出了RAKE接收机的概念和结构。 (Against multipath fading important technology- diversity reception technology in the mobile communication system, and analyze the advantages and disadvantages of the various sub-sets, merging technology RAKE receiver concepts and structures.)

GMSK modulation code.

psk调制,在matlab命令区输入bpskdigital[1 0 1 1 0 0 1 0],1]按运行,即可看到调制波(Psk modulation, input bpskdigital [1 0 1 0 0 0] in the matlab command area, 1] press operation, you can see the modulation wave)

蓝牙防丢器，当手机与蓝牙模块超过一定距离时，手机自动报警。(Bluetooth prevention device, when the mobile phone with bluetooth module exceeds a certain distance, mobile phone automatic alarm.)

认知无线电中频谱感知的方法，基于能量检测的算法和仿真(energy detection)

说明：  无源被动雷达利用距离-多普勒信息实现目标定位(Passive Radar Detection using Range-Doppler Transformations get target location)

用于监控PLC，针对的是modbus协议(monitoring PLC with modbus protocol)