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My test GPRS project. It mus to do close connection when it open

MODBUS是工业领域通信协议的业界标准。这是周立功MODBUS的源码，适合应用和学习，需要的朋友可以看看。(MODBUS communication protocol is the industry standard in the industry. This is Zhou Ligong MODBUS source code, suitable for application and study, need friends can look at.)

不同的相邻分组数目v实现的pts抑制ofdm峰均比的算法，可以仿真出v越大，papr的性能越好(Different number of adjacent sub-v realize the pts OFDM PAPR suppression algorithms, simulation of v can be greater, papr better performance)

ofdm信道估计仿真（ls算法，mmse算法，还有一种改进的mmse算法lmmse，可以直接在马特拉并上运行）(OFDM channel estimation simulation (ls algorithm, mmse algorithm, as well as an improved MMSE algorithm lmmse, can be directly in the Matra and run))

codes different spectrum sensing techniques

数字信号处理，利用matlab语言仿真，对信号进行滤波。(Digital signal processing, using MATLAB language simulation to filter the signal)

2,1,7卷积码译码s-function(2,1,7 Convolutional Decoding s-function)

对MTD雷达中进行杂波滤除的滤滤波器组，就是多普勒滤波器组的仿真 (MTD radar clutter filter filter filter bank, is the simulation of the Doppler filter)

This is wireless sensor network simulation source

说明：  VB写的通过串口与考勤机连接通讯的程序,便于工作查看，调试。(VB written through the serial port and Attendance Machine Connection Communication Procedures, easy to see the work, debugging.)