LFM_single_pulse

A system simulation environment in Matlab/Simulink of RFID is constructed in this paper. Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment, AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by changing the coding method,parameters of building blocks,and operation distance.Finally,some simulation results are presented in this paper.

這個檔案裡面的matlab的m函數，產生有效的都普勒fd隨機相關的瑞利衰減包絡，可以輸入你想要的doppler ferquecy和sampling ferquecy (This file inside the matlab m-function, effective Doppler fd related Rayleigh random attenuation envelope, you can enter your desired doppler ferquecy and sampling ferquecy)

OFDM系统ML同步算法仿真,可以直接跑.(ML synchronization algorithm for OFDM system simulation,can be directly run.)

watermarking with informed embedding

Polar code with CA-SCL Decoder

分析了截短对升余弦信号频谱的影响； 以及量化对升余弦信号及开根号升余弦信号频谱的影响。包含仿真报告。 (Analysis of the truncated raised cosine signal spectrum of the impact and quantified on or open the root cosine signal and cosine signal spectrum or its impact. The report contains the simulation.)

基于投影逼近子空间（PASTD）算法的DOA估计，PASTD算法可以快速度估计协方差矩阵的特征向量(doa estimation using pastd algorithm，pastd algorithm can estimate eigenvectors of covariance matrix quickly)

learnigng of modelsim in matlab

根据皮克里斯波导模型计算不同模态声速，从而计算发射接收点间距离(Model calculation according to Pique Reese waveguide modal sound velocity, so as to calculate the distance between the transmitting and receiving points)

该程序在matlab环境下建立了三维曲线的拟合方法，该方法拟合效果较好。(The program in the matlab environment established a three-dimensional curve fitting method, the method fitting better.)