demon

本程序主要使用matlab语言描述了信号调制方式是别的过程，当信噪比大于10时可以实现对所选信号调制方式的识别(signal processing matlab large than 10dB)

实现ldpc 编译码功能，并且输出BER和曲线图。(LDPC encoder and decoder)

说明：  VC++编程环境下的USB编程(接收和发送数据）(VC++ Programming environment under the USB programming (receiving and sending data))

说明：  实现turbo码编程，是matlab源程序。(matlab program of turbocoder)

Asynchronous Transfer Mode (ATM) is a connection-oriented, packet-switched technology. The packets that are switched in an ATM network are of a fixed length, 53 bytes, and are called cells. The cell size has a particular effect on carrying voice traffic effectively. The ATM Adaptation Layer (AAL) sits between ATM and the variable-length packet protocols that might use ATM, such as IP.

扩频通信系统实用仿真技术一书的所有源代码,包括 信道编码译码(有LDPC码),扩频调制,载波调制,PN码同步,窄带干扰抑制,直扩频系统仿真实列,跳频系统仿真实例等(spread spectrum system simulate technology)

Jabba是一个非常好的Jabber客户端，使用的Visual C++平台编写，可以在Jabba的基础上快速开发Jabber应用程序。(Jabba is a very good Jabber client, use Visual C++ Platform preparation, you can Jabba the basis for rapid development of Jabber applications.)

BPSK调制在高斯信道下的性能，误比特率和信噪比的曲线(BPSK modulation performance under gaussian channel, signal to noise ratio and bit error rate curve )

说明：  包含对gpib通讯的一些操作，类中包括对安捷伦数字万用表的基本操作，对固纬程控电源的基本操作和程控变阻箱的基本操作(Contains some operations for GPIB Communications,Class includes the basic operation of Agilent digital multimeter, weft fixing programmable power supply and programmable resistance box.)

this document gives the basics of gprs concepts in gerat detail