qam的调制程序，可以参考查看，对学习有帮助

短信PUD开发文档,通过AT指令发送手机短信,中文通过PUD编码.-Message PUD development documents, through the AT command to send the phone message, the Chinese through the PUD code.

瑞利衰落信道仿真在不同频率和采样频率下的仿真程序，适合开发移动通信系统的仿真-Rayleigh fading channel simulation at different frequency and sampling frequency simulation program, suitable for the development of the mobile communication system simulation

使用vb制作的电话拨号程序，信号清晰稳定，测试的时候需要语音猫-Uses the vb develop the telephone dials the number procedure clearly, the signal is stable, test time needs the pronunciation cat

gsm模块AT指令代码-gsm AT command module code

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很不错的xml解析工具，有助你理解xml的用法-Very nice xml parsing tool, will help you understand the usage of xml

blackberry for modem

Make and answer phone calls Detect tone and pulse digit from the phone line Capture Caller ID Support blind transfer, single-step transfer/conference, consultation transfer/conference, hold, unhold. Control of the local phone handset, microphone and speaker of the modem Send and receive faxes Play and record on the phone line or sound card Play music in background mode Silence detection VU Meter Wave sound editor that allows your end-users to edit their own sound files. Voice recognition and voice synthesis. Full control over the serial port device ZModem file transfer utility File compression and encryption utility

基于wavecom公司的Q24_plus GPRS/GSM 模块的无线modem的原理图设计，软件格式为ORCAD的DSN-On wavecom" s Q24_plus GPRS/GSM wireless modem module, the schematic design, software ORCAD format of the DSN

该程序为QPSK解调程序，符号速率2M,采样速率为64M-The program procedures for QPSK demodulation, symbol rate of 2M, the sampling rate of 64M