DAC芯片的DDS，频率可调500KHz ~ 5MHz

一份详细的SIP协议的数据流分析的文档，该文档有两百多页，包含的SIP消息的各种情况，内容实用，可供SIP协议的VoIP开发者做一份详细的SIP数据流的分析手册。-a detailed SIP protocol data flow analysis of the document, the document is over 200 pages and contains information of the various SIP, as practical, the SIP for VoIP developers to do a detailed SIP data flow analysis handbook.

SIM300的GPRS连接例程序，用的MSP430单片机，对SIM300模块的开发有一定的参考价值-SIM300 the GPRS connection Example procedures used MSP430 microcontroller, the development of SIM300 module has certain reference value

AWGN channel. Uses a file called BPSK (containing BPSK voltage levels) and adds gaussian noise to it. The noise is generated by box muller equation. Note: BPSK file was generated from BPSK modulator source: BPSK.c

Information theoretic criterion-based spectrum sensing for cognitive radio

FPGA设计的四种常用思想与技巧,大家多多支持啊-FPGA design with four kinds of thinking skills, we will support ah

A reference of SIP protocol stack, very good.-A reference of the SIP protocol stack, very good.

this a book that learning serial programming-this is a book that learning serial programming

JPEG基本系统的解码器-JPEG decoders

用c++实现p2p代码，可以学习如何用c++实现p2p的通讯 很实用 -P2p using c++ implementation code, you can learn how to use c++ very practical realization of p2p communication

一个基于dct变换的数字水印算法的源程序,可供进行数字水印学习和研究的学生及科研工作者学习参考-DCT-based digital watermarking algorithm transform the source code, available for study and research of digital watermarking students and researchers to study the reference