通讯测试源程序员通讯测试源程序 通讯测试源程序

用C语言实现的在AWGN信道下的BPSK信号调制-C language in AWGN channel BPSK modulation signal

RFC1055通过串行线路传输IP数据报的非标准：SLIP

用S7-200PLC的自由口模式和VB中的MSComm控件方便地实现了计算机与S7-200（CPU224）PLC的通讯。计算机作为主站,用户通过计算机可以方便地设置房间的控制指令并向PLC发出控制或监测命令， PLC作为从站来响应计算机发送的指令并采取相应的动作并将房间的电、水、热信息发回到计算机。用户可以通过电脑屏幕实时地监视到房间的电、水、热信息并进行相应的处理。-with S7-200PLC the Free Port Mode and the VB MSComm to realize a trap Computer and S7-200 (CPU224) PLC communications. Computer as a master station, Computer users can easily set up control rooms PLC issued directives to control or monitoring orders, PLC as from the station to respond to orders sent by the computer and take corresponding action will be room for electricity, water, Heat fat information to the computer. The user can screen real-time surveillance of the room electricity, water and heat information and handled accordingly.

此程序根据不同的场景采用对应的方法预测无线通信中的链路信噪比，根据预测信噪比选择合适的编码效率和调制阶数进行链路自适应，以此应对过时信噪比对系统性能带来的恶劣影响。

用于产生QAM数字序列 qam.m mary.m为子函数-QAM is used for creating a digital sequence qam.m mary.m for Functions

除了支持一般的小数运算，还支持常见的函数运算。 几个包中的MathFP是针对不同需要而提供的不同版本，开发J2ME只要使用net.jscience.math.MathFP就可以。-addition to general support for the fractional arithmetic, but also the common computing functions. Several packets of MathFP is different needs of the different versions, as long as the use of J2ME development net.jscience.math.MathFP can.

一个很好的串口通讯代码，非常实用，功能及其强大，一定要下载- A very good string mouth communication code, extremely practical, the function and its is formidable, certainly must download

通信协议的解析和分析，主要是看它的校验码。-Analysis of communication protocols and analysis, mainly to look at its validation code.

FSK详细资料，关于FSK/DTMF相关的资料等等 -FSK detailed information on the FSK/DTMF-related information, etc.

华为的硬件开发手册，网上大名鼎鼎的华为公司内部硬件开发的管理规范，很值得一读-huawei hardware development reference