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实用性代码，可以在手机等移动设备上很好的使用，可操作性强。(Usefulness of the code can be very good for use on mobile phones and other mobile devices operable.)

对数字信号进行相位幅度调制，并在接收端成功解调(QAM of Digital Signal and Successful Demodulation at Receiver)

基于opnet的Ad hoc网络业务量特性研究。(OPNET based on the Ad hoc network characteristics of the volume of business.)

本程序实现了用位图作为全平的主窗口,是全平显示的又一种实现方法,(This program realizes using bitmap as the main window of full flat, which is another realization method of full flat display.)

是c语言的编程指导手册，分为基础篇和函数篇，使编程人员能快速查找函数等的使用方法。(This is the C language programming guide, divided into basic function and using method, so programmers can quickly find the function. The C language is a programming guide, divided into basic function and using method, so programmers can quickly find the function and so on. )

scps-tp协议中在opnet仿真软件中的实现代码(The expansion of the transmission window in the SCPS-TP protocol and the snack mechanism and the Vegas algorithm to implement the code in the OPNET simulation software)

说明：  基于MATLAB用窗函数设计FIR滤波器，并验证滤波效果(Design FIR filter based on MATLAB with window function and verify filter effect)

华为GTM900AT命令手册，对开发GPRS具有指导意义(Huawei GTM900 AT command manual，It has a guiding significance to develop GPRS )

(1)建立DQPSK调制和解调 SIMULINK仿真模型，评估其在AWGN信道和瑞利衰落信道下的误码率性能（画出信噪比变化时的误码率曲线）； (2)基于（1）建立的SIMULINK仿真模型，分别在AWGN信道和瑞利衰落信道下发送一个实际音频文件，在接收端实时播放出来((1) the DQPSK modulation and demodulation SIMULINK simulation model is established to evaluate the bit error rate performance under the AWGN channel and the Rayleigh fading channel (the bit error rate curve when the signal to noise ratio changes). (2) based on the (1) established SIMULINK simulation model, a real audio file is sent under the AWGN channel and the Rayleigh fading channel respectively, and it is played on the receiving end in real time.)

FLL、PLL、DLL的设计与比较,在扩频通信系统中这三种环路就是关键。(FLL, PLL, DLL design and comparison, in the spread spectrum communication system in these three loops is the key.)