多径干扰下ofdm仿真

说明：  调用webrtc中的VAD算法，可以实现录音文件的语音端点检测，时延7.8ms(Calling VAD algorithm in webrtc, voice endpoint detection of recording file can be realized with a delay of 7.8ms)

代数编码纠错编码的经典书籍Richard_E._Blahut(error control code and algebra code；Richard_E._Blahut)

这是一篇介绍数字下变频中抽取滤波器设计的文章 我觉得很有指导意义，在此共享(this arcitle is dicrible the DDC design,very good)

直接序列扩频原理仿真.用ELAINX公司SYSTEMVIEW调试.(Direct Sequence Spread Spectrum simulation theory. SYSTEMVIEW ELAINX companies with debugging.)

说明：  A Study of the Ultra-Wideband Wireless Propagation Channel and Optimum UWB Receiver Design

本文件包含通信所有过程，从调制，扩频，发送到接收，经过解扩，解调等。其中信道可以随机产生时变的多径信道。()

VS2010串口例程，VC2010写的串口调试助手,开发环境为VS2010,使用的uncioud环境,纯API,不错的C++串行通讯例子程序，希望能对串口学习的朋友有所帮助 (VS2010 serial routines, VC2010 write serial debugging assistant development environment VS2010, using uncioud environment, pure API, a good example of C++ serial communication program, hoping to help a friend learn the serial port)

UR旋转矢量转化，转化为RPY坐标，更加适合编程，非常靠谱(UR Rotation Vector Conversion)

西门子PLC第三方通信驱动，包括PPI,MPI,ISO-TCP等所有通信协议(Siemens PLC, third-party communications drivers, including PPI, MPI, ISO-TCP communication protocol)

基于systemview平台，对（7,4）BCH码进行编码和译码，最后得出译码后消息和原消息的BER(Based systemview platform, (7,4) BCH code for encoding and decoding, the conclusion that the BER of the decoded message and the original message)