用MODEM来发短信，包括PDU的算法，较为详细！

设定固定的电话号码 ，自动拨打电话，接通你拨的电话号码-Set a fixed telephone number, auto-dial phone, dial the phone number connected to your

采用dpsk方式调制的直扩信号 -DPSK modulation methods used Direct Sequence Spread Spectrum Signal

华为的GSM模块EM310,AT指令集和编写的例子-Huawei" s GSM module EM310, AT instruction set and the preparation of examples of

zmodemclass的经典源码，原来旧的代码，有很多问题，比如文件名读取错误等，都已经被我修复。-zmodemclass classic source, the original old code has a lot of problems, such as the file name read error and so on, I have been repaired.

qam的解调程序，可以参考，对学习有帮助-qam demodulation process, you can reference on learning to help

这是我在学校做通信时留下的资料 希望能给你带来帮助-This is what I do in school to communicate the information to stay I hope you will help

通过GSM模块发送接收短消息的程序，可发送免提信息-GSM module send and receive text messages, may send a hands-free information

Cognitive Radio Experiments using Reconfigurable BEE2

开发gprs的AT命令文档，-Gprs development of the AT command document,

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