vc 下的双音多频（DTMF）接收器的使用源程序

诺基亚6280原厂的图纸-Nokia 6280 original drawings! ! ! ! ! ! ! ! ! ! !

将模拟滤波器转变为数字滤波器。-analog filter into digital filter.

the spectrum of the OFDM symbols in time domain

简单的通信系统，应用到Socket，包括客户端与服务器端

一个自动上网计时的程序- Automatically accesses the net the time procedure

包括八天线准正交空时码的编码和解码函数，满速率部分分集增益，解码包括部分行的解码-Including eight antenna quasi-orthogonal space-time codes of encoding and decoding functions, full diversity gain some speed, decoding including some line decoder

自己写的一个串口程序 串口的使用读写-Their own written procedures for a serial use the serial read and write ...

关于ＩＳＡＧ网关相关的协议文档，该规范为电信的综合接入网关协议-ISAG gateway on the agreement related documents, the specification for the Telecom Integrated Access Gateway Protocol

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基于GSM模块实现中文短信息发送 -Based on the GSM module for sending Chinese text messages