madqm

说明：  CCSDS推荐的LDPC编码方案，一系列参考标准，很好哦！(CCSDS recommended LDPC coding scheme, a series of reference standards, very good!)

数字通信中的16QAM映射，采用格雷码编码，包括星座图的显示，简单明了清晰，由此可以退出64,128QAM的matlab编码(Digital communication 16QAM mapping, the use of Gray coding, including the constellation display, simple clear, it can be out of the 64,128 QAM matlab code)

说明：  产生随机信号，采用4fsk调制方式通过一个水声信道，再采用非相干解调(Generate random signal, use 4FSK modulation to pass through an underwater acoustic channel, and then use incoherent demodulation)

混沌通信的源代码，很有参考价值的！关于卡尔曼滤波等实现FM-DCSK通信系统性能仿真(Chaotic communication source code, a good reference! On Kalman filtering to achieve FM-DCSK Communication System Performance Simulation)

说明：  用51单片机完美地解决凝露现象。防止元件老化(The dew phenomenon can be perfectly solved by 51 single chip computer. Preventing component ageing)

用C#实现ModBus读写功能，用作客户端读写ModBus-TCP server数据(Modbus read and write functions in C#)

OPTICAL COMMUNICATIONS MATLAB calls OptiSystem CO-OFDM.

wcdma中的下行扰码，18级移位寄存器产生GOLD码，复扰码(wcdma a downlink scrambling code, 18 shift register GOLD code, complex scrambling code)

Matlab平台下仿真实现2*2, 4*4， 6*6天线Alamouti空时编码的MIMO系统，画出不同信噪比下的性能曲线对比。(2* 2, 4* 4, 6* 6 antenna Alamouti space-time coding MIMO system Matlab simulation platform, draw the comparison of different signal-to-noise ratio performance curve.)

无线手机使用的集成式功放器/淤波器前端The use of wireless mobile devices, integrated power amplifier / silt-wave front-end(The use of wireless mobile devices, integrated power amplifier/silt-wave front-end)