8PSK

说明：  利用通信系统中调制信号的循环平稳特性,对频谱空洞进行检测,提升频谱感知技术在低信噪比下的性能。实验结果表明:与传统能量检测方法相比,采用循环特征检测方法改善了认知无线电中频谱空洞的检测能力。(Based on the cyclostationarity of modulation signals, spectrum hole is detected, aiming at the improve- ment of the performance of spectrum sensing in low SNR situation. The results show that comparing with the tra- ditional energy detection technique, cyclostationarity-based spectrum sensing technique has greatly improved the detective ability in cognitive radio.)

This program simulates the bit-error-rate (BER) performance of OSTBC with L=4 antennas over the frequency flat Rayleigh block fading channel The code is developed for real orthogonal design, code rate 1/2 modulation- 16 QAM with gray coding resulting in 2 bits/sec/Hz.

visual C++ MFC 环境下 串口的连接，收发数据的实现，串口探测工具部分功能的实现(Serial port connection)

信号进入信道，经过高斯噪声的干扰，经过QPSK调制以后的时延 (The signal enters the channel, after the interference of the Gaussian noise after a delay after the QPSK modulation)

说明：  MATLAB信号检测仿真例子 参数都已知的GLRT检测(MATLAB signal detection simulation example)

支持IEC60870-5-104: 2000 IEC104规约软件包 实现104规约主站侧链路层的功能(IEC_Master_104.lib: void Init_SockServerport(WORD port=2404) void Init_Linkpara(int t0=30,int t1=15,int t2=10,int t3=20,int k=12,int w=8) virtual void On_init_Link_process() virtual void On_init_Sock_process() virtual void On_ErrorMsg(char*msgbuf) void slave_start() void slave_close() )

h5聊天室仿红包群微信群源码，可以发红包，做一个网站版的聊天室。(H5 Chat Room Micro Message Group Source Code Imitating Red Packet Group)

易语言超文本浏览框枚举链接源码,很不错的易语言源码,适合易语言爱好者学习,()

封装了windows操作串口的几个API（CreateFile， ReadFile，WriteFile，SetComState）。串口的读写设置这几个操作都可以简单地只用关键一两个参数就能实现操作。也是一个很好的例子，我写这个之前查了不少资料，感觉非常麻烦，索性发出来给新手们作个样例(Windows serial COM port access class，it includes CreateFile, SetComState，ReadFile，WriteFile，CloseFile)

Nist Conceptual model for smart grid communication.