单通道跳频信号生成的子函数

朋友写的C++645通讯程序，支持645-1997与645-2007,支持自已组帧程序自动添加校验码通讯，可以增加数据标识定义，里面还有部分关于费控通讯代码，挺好，拿来分享(Friend write C++645 communications program to support the 645-1997 and 645-2007, to support their own group the frame program automatically adds the checksum communications, can increase data identifies the definition, there is also a section on the fee control communications code, good for them and share)

说明：  很久很久之前，收藏的一份 清华大学 p2p相关的研究文献，希望对有需要的人有帮助，非常难得(Long, long ago, a collection of P2P-related research literature collected by Tsinghua University, hoping to help people in need, is very rare.)

TDMA simulation using OPNET modeler

主要是实现调制识别，区分几种常用的数字调制信号。含有两个文件夹 其一为特征参数的仿真；其二为正确识别率的仿真。文件夹key feature simulink中： 运行程序会得到各特征参数之间区分图 从图中可看到特征参数的有效性，见图。 文件夹classification rate simulink中：运行main.m文件 可以得到正确识别率 见图。(It is mainly to realize modulation recognition and distinguish several commonly used digital modulation signals. The simulation of two folders is one of the characteristic parameters, and the second is the simulation of the correct recognition rate. In the folder key feature Simulink: The running program will get the validity of the feature parameters that can be seen from the diagram, as shown in the diagram. Folder classification rate Simulink: running the main.m file can get the correct recognition rate.)

说明：  ofdm信道估计，采用了LS算法，DFT进行插值(OFDM channel estimation adopts LS algorithm and DFT interpolation)

说明：  这是 Okumura 和Hata模型的编码。(This is the coding of Okumura and Hata models.)

optical cummunication examples

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.)

用于手机模组中显示屏上，用来点屏的初始化代码(On the display module for mobile phones used to point screen initialization code)

说明：  mimo无线信道建模的matlab程序(Matlab program of MIMO wireless channel modeling)