shan_ban_1_s

锁相环问题的仿真，可以解决数字锁相环的仿真问题(Phase-locked loop simulation problem, can solve the problem of digital phase-locked loop simulation)

Matlab入门级OFDM仿真，包括每个步骤的波形，星座图，频谱等 含循环前后缀，时域加窗等，适合刚接触OFDM的学习 (Matlab entry-level OFDM simulation, including each step of the waveform, constellation diagram, spectrum including cycles before the suffix, such as time-domain windowing for OFDM new to the learning)

说明：  在n个城市建设通信网络，只需架设n-1条线路即可至少包含10个城市，城市数n由键盘录入，城市坐标由随机函数产生小于100的整数(In the construction of communication network in n cities, only n-1 lines are needed to include at least 10 cities. The number of cities n is input by keyboard, and the coordinates of cities are generated by random functions into integers less than 100.)

语音编码方案的选取对移动通信系统的通话质量、信道容量等有重要影响。本文讨论了TD-SCDMA系统中AMR语音编码的自适应机制，同时分析了AMR中代数码本线性预测(ACELP)算法及实现过程。该方案可以在一块TMS320C5510上实现。(The selection of voice coding schemes for mobile communication systems the quality of the call, such as channel capacity have had a significant impact. In this paper, TD-SCDMA System AMR Adaptive speech coding mechanism, at the same time analysis of AMR in the generation of Digital Linear Prediction (ACELP) algorithm and the realization of the process. The program can be achieved in a TMS320C5510.)

在OFDM系统下，仿真多径衰落与理论高斯衰落的误码率与其理论误码率的比较(In OFDM system, the bit error rate of simulated multipath fading and theoretical gaussian fading is compared with that of theoretical gaussian fading)

一个基于串口的手机短信发送/接收程序；Demo很简单，是以异步方式读写串口的；在对话框初始化中修改串口的配置参数正确后，能100％的正常发送/接收短信。 (A message based on the serial port of the mobile phone to send/receive process Demo is very simple, based on asynchronous serial reading and writing in the dialog box to initialize the serial port to modify configuration parameters correct to 100 of the normal Send/receive message.)

用winsock实现两机通讯的一个小软件 特别简单 不再具体介绍(Winsock implementation to use two planes, a small communications software in particular is no longer easy introduction of specific)

16QAM调制与解调程序，使用matlab运行(16QAM modulation and demodulation process, the use of matlab run)

基于matlab的PN码的同步仿真，包含详细代码，可以直接运行(Matlab based PN code synchronization simulation, including detailed code, can run directly)

GFSK调制通信系统误码率统计，非常有借鉴价值(GFSK modulation communication system bit error rate statistics, the very reference value)