polar-code

这是一个完整的OFDM通信系统仿真代码。包括信源编码信源调制，信道编码，信道估计，峰均抑制比等。实际程序可用直接运行。(This is a complete OFDM communication system simulation code. Including the source modulation source coding, channel coding, channel estimation, peak to average ratio suppression. The actual procedure can be run directly.)

HLP A+ Modbus 标准通讯协议格式，上位机发送数据格式，正确时变频器返回数据格式(This bit will be set to logic 1 when the receive buffer has been read and contains no new information. If there is new information available in the receive buffer that has not been read, this bit will return to logic 0. RXBMT = 1 when in Master Mode.)

说明：  QPSK调制仿真与分析，使用matlab仿真实现QPSK相干调制与解调，通过AWGN信道，画出误比特率曲线(Generate digital baseband signal, add AWGN Gaussian white noise to transmit in the channel, detect the original baseband signal, draw theoretical and simulation error rate curve, QPSK modulation simulation and analysis, use matlab simulation to realize QPSK coherent modulation and demodulation, draw error rate curve through AWGN channel)

说明：  主要运用matlab仿真mpsk、16qam的星座图，里面有很多关于函数的参数注释，适合初学者(Realization of MPSK 16QAM constellation in MATLAB)

实现物理层网络编码的仿真，此为无信道编码环境下实现的(network coding)

手机RSS阅读器(html5)，应用程序编程源码，很好的参考资料。(Mobile phone RSS reader (HTML5), application programming source code, a good reference.)

51单片机主机和从机通过485测AD电压，有程序和仿真(51 single chip computer host and slave machine through 485 AD voltage, program and simulation)

三种随机构造法：Gallager_getH、Mackay_getH、PEG_getH(Three random construction methods: Gallager_getH, Mackay_getH, PEG_getH)

eetop.cn_PLLnoise+jitter_ams model

说明：  基于宏小区及微小区MIMO信道模型，比较了MIMO信道在两种传输环境中的空间相关特性，通过数值分 析方法得到了两类信道空间相关性随发送端、接收端天线阵列的分布而变化的特征曲线，并分析比较了信道参数， 即到达角的角度扩展，对空间相关性的影响。(The space correlation is analyzed in different propagation conditions including the MIMO macro-cell and micro-cell applications. The characteristics curves describing the space correlation versus the distance of antennas are obtained according to the numerical analysis. The effect of the spread of the angle of arrival on the space correlation is also investigated. )