CMPP3.0 China Mobile Communications Development of Short Message Gateway Interfa...

利用active控件实现modbus通信

unix环境下高级变成文档，内容很详尽，还有相应的实例-senior unix environment into documentation, as detailed, and the corresponding example

实现松下PLC与PC之间的通讯，对于需要自己开发通讯的人来说，有参考价值- Realizes between Matushita PLC and the PC communication, regarding needs the person which own develops the communication to say, has the reference value

Rs232串行通讯控制-Rs232 serial communication control

SYMPCHUNK sets the number of symbols demodulated at once with a constant carrier frequency and symbol timing offset. This is a fundamental decoder parameter that establishes its carrier and symbol timing tracking bandwidth. Set it too low and the demodulator can"t accurately determine carrier frequency and symbol timing on a noisy signal. Set it too high and the demodulator may not be able to track large symbol rate offsets caused by Doppler shift and/or A/D or spacecraft clock errors. Or it might have trouble tracking high rates of change in the carrier frequency due to Doppler acceleration.The current value of SYMPCHUNK is 4*N1 = 512, where N1 = 128 is the order of the convolutional interleaver. 512 symbols is 512 milliseconds at 1000 symbols/sec, giving a frequency/time determination SNR that is 10*log10(512) = 27 dB greater than the Es/N0, not counti

TD-CDMA之物理层详细资料，对初学者帮助很大-TD-CDMA physical layer of the detailed information of great help for beginners

该程序制作了一个简单的E-MAIL发送器，在VC中可以用ShellExecute函数简单的调用默认的电子邮件程序。-The procedure produced a simple E-MAIL transmitter in the VC can be simple to use ShellExecute function call the default email program.

通讯串口编程的一个实例，应用于变电站自动化系统的前置通讯模块-serial communications programming an example for substation automation system for the front communication module

CRC算法原理及实现,生成多项式为"1 1000 0000 0000 0101"(CRC-16)，简记作0x18005。-CRC algorithm and implementation, generating polynomial for the

用UDP写的可靠传输示范程序,非常有借鉴意义,适合互连网通讯