ldpc_llr_bp_decode

相干解调的程序代码，可用于光电检测,包括光纤传感、分布式检测等 (heterodyne detection code ,is used for opto-electronic)

power allocation in NOMA

信号的统计检测与估计理论---李道本 一本很好的教材。分别对信号的检测和估计做了详细描述(The statistics of the signal detection and estimation theory--- Li Tao, a good textbook. A detailed description of signal detection and estimation)

说明：  中频30MHZ，带宽5MHZ，脉宽25us，采样率140MSPS(If 30MHz, bandwidth 5MHz, pulse width 25us, sampling rate 140msps)

说明：  在瑞利信道中，对于OFDM信号设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线(In Rayleigh channel, a specific guidance aided channel estimation method is designed for OFDM signal, and the simulation is carried out with Simulink to measure the BER performance of BPSK modulation. The relation curve between bit SNR and channel estimation mean square error is drawn, and the relation curve between bit SNR and bit error rate is drawn)

FBMC的各个模块的代码实现，适合FBMC入门参考。(Code Implementation of Each Module of FBMC)

说明：  1、基带码型仿真 （1）通过仿真观察占空比为50%、 75%以及100%的单、 双极性归零码波形以及其功率谱，分析不同占空比对 仿真结果的影响。 （2） 通过仿真产生一随机消息码序列，将其分别转换为 AMI码和HDB3码，观察它们的波形及其功率谱密度。 2、数字带通调制系统仿真 设计一个采用2ASK（ OOK） 调制的数字通信系统： 产生二进制随机数据，并仿真其对应的2ASK调制波形， 分析其频谱。所产生的调制波形加入不同信噪比的白噪声， 选取合适的接收方案，画出系统误码率曲线，并与理论误 码率进行对比。(1.Baseband pattern simulation 2. Simulation of digital band-pass modulation system)

ITRI CIM Emulator能够读取SML档案，主要功能是用来测试半导体设备的通讯功能，它支持SECS-I/SECS-II/HSMS-SS通讯协议，支持SML格式，具有强大易用的自动化测试功能，免安装即拷即用。 使用前需要先将RS232连接线接好运行软件，选择检视。在设定SECS-I对话窗口中输入相关的通讯参数。(ITRI CIM Emulator can read SML files. Its main function is to test the communication function of semiconductor devices. ITRI CIM Emulator supports SECS-I/SECS-II/HSMS-SS communication protocol, supports SML format, has powerful and easy-to-use automated testing function, and exempts installation and copy-and-play. Before you use it, you need to connect the RS232 connection line to the running software and select the view. Input the relevant communication parameters in the SECS-I dialog window.)

A source code of international Chin chess, have the referenc

基于多径传输和多普勒频移的 瑞利（Rayleigh）信道的仿真 主要考虑不同条件下的仿真(Based on Multi-Drive transmission and Doppler frequency shift of the Rayleigh (Rayleigh) channel simulation main consideration different The simulation conditions)