polar-code

无线信道建模一直以来都很复杂，而且不同场景下的模型差异较大，这是一本专门讲解无线信道建模方法的书籍配套的matlab例程(Channel modeling has been very complex, and the model under different scenarios are quite different, which is the one devoted to channel modeling method books matching matlab routines)

ofdm system 1. applyOFDMChannel 2. calculateOFDMBER 3. generateOFDMSignal 4. getOFDMPreambleAndPilot 5. OFDMReceiver 6. OFDMSynchronizationExample 7. OFDMTransmitter 8. processOFDMScopes 9. receiveOFDMSignal

用simulink实现电力电子技术中的降压电路，可应用于光伏发电(Implementation of buck circuit with Simulink)

仿真MIMO系统，采用STBC编码，发射天线数目为2，接收天线数目为2(The MIMO system is simulated with STBC coding, the number of transmit antennas is 2, and the number of receiving antennas is 2)

IEC60870-5-103通信规约的从站模拟软件，可以模拟一个采用单片机驱动的继电保护设备，自动向主站程序上送数据并响应主站数据的数据问询请求，并有可选择的状态变位和扰动数据进行上送(IEC60870-5-103 communication protocol slave simulation software can simulate a single-chip computer-driven protection equipment, automatic procedures to send data to the master station and respond to data inquiries master data requests, and there is an optional state displacement and disturbance data sent)

仿真了恒虚警的平均单元算法，给出仿真结果，同时分析了不同窗口数对虚警率和检测率的影响，并写了详细的注释(The constant false alarm average cell algorithm is simulated, and the simulation results are given. Meanwhile, the influence of different window numbers on false alarm rate and detection rate is analyzed, and detailed annotations are written.)

OFDM（正交频分复用）系统以其抗多径衰落和较高的频带利用率，得到了众多领域的广泛应用。本文就OFDM系统中关键技术之一的信道估计技术进行了介绍。并分别叙述了OFDM系统和信道估计的意义，归纳了信道估计的分类，最后介绍了MMSE、LS及其改进信道估计算法并仿真出结果。(OFDM（orthogonal frequency division multiplexing) has been widely used in many areas for its good resistance to multipath fading and high bandwidth efficiency.In this paper,channel estimation,which is one of the key technologies in OFDM systems,were introduced. Then we discuss the significance of the channel estimation and the classification of channel estimation.Finally,we study the algorithms of channel estimation such as MMSE,LS and LMMSE,and further get the simulation results. )

说明：  这是16QAM的仿真，带GUI界面，很好用的。(This is 16QAM simulation, with GUI interface, very useful.)

说明：  采用QAM调制的方式，实现OFDM信号的PAPR的降低，并且提供了由optisystem转换到MATLAB接口的代码(QAM modulation is adopted to reduce the PAPR of OFDM signal, and the optisystem port is provided to convert to MATLAB code)

simulating PAPR reduction with PTS method in STBC MIMO OFDM