CDMA的matlab代码 包括发送，接收及通过nakagami信道

光纤光缆技术发展以及在FTTH中的应用 综述了近期光纤光缆制造、施工及维护技术上的发展特点，分析了其发展趋势，并就我国光纤光缆技术与产业的发展提出了一些值得思考的问题。FTTH正在走入人们实用化的视野，国内外很多光缆生产厂商或研究所都提出了自己的构想，本文着重介绍了FTTH应用中的一些典型的光纤及光缆技术，对FTTH在我国的发展前景做了分析，并提出了自己在FTTH发展中的一些观点。-Technological development of optical fiber and cable as well as in FTTH Applications in the near future of optical fiber and cable manufacturing, construction and maintenance of the characteristics of technological development, analyzes its development trends, and technology with China s optical fiber and cable industry raised some food for thought. FTTH is the people into a practical perspective, many domestic and international fiber optic cable manufacturers or research institutes have put forward their own ideas, this article highlights the FTTH application of some typical fiber-optic and fiber optic technology, the development of FTTH in China prospects analysis and put forward its own FTTH development in some of the points.

VB连接S7 200 PLC的PC ACCESS服务器的OPC源码，很详细-VB to connect the S7 200 PLC

文章中研究了在MC-MFSK通信系统的多址通信检测问题-Research article Communication in the MC-MFSK multiple access communication system detection

通信系统仿真原理与无线应用 所有的代码-Communication System Simulation Principle and wireless applications, all of the code

In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.-In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.

1.C#语言开发，采用NET4.0框架，模块化设计，通信效率不怎么高 可以凑合用。 2.工程结构类似OPC通讯方式，采用Tag的方式，通过标签名就可以读写寄存器。 3.采用XML配置式标签的方式实时读写PLC内部寄存器，可读写寄存器包括I、Q、PI、PA、M、DB。 4.具有PLC断线重连功能，通讯稳定可靠。 5.完全开源免费、包括Dll文件、附件内包含源代码。

用于歌曲的录制和人工标注音高，用于其他程序后面的操作，如音高跟踪和旋律识别等。

STBC-OFDM中Alamouti的仿真实现,包括信道编译码和二进制信源-STBC-OFDM in the simulation implementation Alamouti, including channel encoding and decoding and binary source

中国来电显示标准，为DTMF数据传送格式的，中国国标。-china CID(DTMF)

基于广域网的语音聊天系统，任一端可以发起连接，但先的知道对方IP-based WAN voice chat system, the end should be initiated connectivity, but the first to know each other IP