现代谱估计 (2)

极化码的matlab实现，包括了完整的编码以及译码程序(polar coding and decoding)

分析瑞利衰落信道下qpsk的snr与ber的关系(The relationship between QPSK SNR and ber in Rayleigh fading channel is analyzed)

OFDM-QPSK系统在不同信道（AWGN、AWGN+两径衰落信道、AWGN+三径衰落信道）下的接收端误码性能(three path fading, Gauss white noise)

OFDM系统经典均衡MATLAB程序, 包括ZF均衡，MMSE均衡，RLS均衡(ZFE ,mmse, rls,for OFDMsystem )

MATLAB仿真软件在通信系统仿真中的应用(MATLAB simulation software in the communication system simulation)

说明：  大气激光通信湍流效应分析与仿真 介绍了湍流介质中波传播的解析方法以及常用湍流功率谱模型，基于高斯光束在水平传输条件下的传播特性和闪烁(In this paper, statistical characteristics and formation of atmospheric turbulence is described, analytical methods and the turbulence power spectrum models for optical wave propagation through random medium are also introduced.)

NLMS for channel equalization

说明：  模拟调制识别各特征参数随信噪比变化曲线。信号的瞬时信息包括瞬时幅度、瞬时相位、瞬时频率及其不同角度的统计特征值，其中瞬时幅度、瞬时相位、瞬时频率是一个信号最基本的特征。（AM、DSB、SSB、VSB、FM、AM-FM）(Simulated Modulation Recognition Curve of Variation of Characteristic Parameters with Signal-to-Noise Ratio)

说明：  实现了神经网络PID算法的编程,通过神经网络在线调节PID参数(MATALB BP PID sfunction)

这个程序除了接收机同步、信道编码没有加入外，基本上反映了一个OFDM系统的特性： 1. qpsk/16qam/64qam映射、解映射 2. OFDM调制解调（循环前缀，FFT等） 3. 非整数采样时刻多径时延的多径信道 4. Rayleigh或者Rician多径信道 5. 信道的连续时变（非block fading） 6. 线性插值信道估计 7. FFT变换域插值信道估计(In addition to this program receiver synchronization, channel coding have not joined, the basically reflect the characteristics of an OFDM system: 1. Qpsk/16qam/64qam mapping, mapping solution 2. OFDM modulation and demodulation (cyclic prefix, FFT, etc.) 3. Non- integer sampling instant multi-path delay of multi-path channel 4. Rayleigh or Rician multipath channel 5. a continuous time-varying channel (non-block fading) 6. linear interpolation channel estimation 7. FFT transform domain interpolation channel estimation)