knn(带数据)

OPNET仿真的无线信道，OPNET仿真的无线信道

含有已知信道下BPSK,QPSK,8PSK,16QAM的MLSE均衡，MMSE（频域）均衡SER,BER性能的对比。(SER,BER performance coparing of BPSK,QPSK.8PSK,16QAM modulation of block transmission in MMSE or MLSE equalizer on known channel.)

FIR filter design description........

信号处理、检测。CHAP全称是PPP（点对点协议）询问握手认证协议 （Challenge Handshake Authentication Protocol）。(Noise, signal processing, detection, waveform. The full name of CHAP is PPP (Point-to-Point Protocol) Challenge Handshake Authentication Protocol.)

说明：  Taming the Complexity of mm-Wave Massive MIMO Systems: Efficient Channel Estimation and Beamforming

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.)

说明：  TI RTOS 教材，难得好资料，基于TI RTOS软件开发人员的必备参考(TI RTOS handbook, show how to use TI RTOS)

the satellite communication this paper introduced

在高斯白噪声信道下的误码率性能和误帧率仿真译码程序。(BPSK debugging in Gauss white noise channel)

针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)