jiyinjiance20070407

基于导频的ofdm系统的LS估计MMSE估计 (Pilot-based OFDM system, the LS estimate of the MMSE estimates)

Wigner-Ville 分布(简称 WVD)是典型的二次型变换，它定义为信号瞬时相关函数的傅立 叶变换。 由于在计算中不加窗操作，它避免了时域分辨率和频域分辨率之间的相互牵制。 已证明，对于单分量线性调频信号，WVD 的时频表示能量集中性最优。但也正因为不涉 及窗函数，在分析多分量信号时 WVD 会受到交叉项的干扰。(The Wigner-Ville distribution (WVD) is a typical quadratic transformation, which is defined as the Fourier of the instantaneous correlation function of a signal. Ye Bianhuan. Because of no window operation in the calculation, it avoids the mutual restraint between time domain resolution and frequency domain resolution. It has been proved that for the single component LFM signal, the WVD time frequency representation has the best energy concentration. But it is also because it does not involve. And window functions, when WVD is used to analyze multi-component signals, it will be interfered by cross terms.)

Matlab处理图形图象的一些处理函数使用方法介绍 (Matlab handle graphics images using a number of treatment function introduction)

MATLAB高通滤波MATLAB高通滤波MATLAB高通滤波MATLAB高通滤波MATLAB高通滤波(MATLAB Gaotong Lvbo)

Hi Friends. This is simple Image code of Arithmetic mean filtering operation,which results in smoothing of image. Default image size is 256 x 256

说明：  LTE-A中的AF和DF中继研究，比较有用(LTE-A in the AF and DF relaying research, more useful)

Example for IRis recognition using matlab

功率谱计算方法，本文采用的是最大似然方法。(Power spectrum calculation method)

详细介绍主元分析的步骤、用matlab具体的实现方式(Details the steps of the principal component analysis using matlab specific way to achieve)

产生随机信号观测样本，不同信噪比和归一化频率。利用基于FFT的自相关函数快速计算方法估计其自相关函数。(Generate random signal observation samples, different signal to noise ratio and normalized frequency.Based on FFT calculation method of the autocorrelation function to quickly estimate the autocorrelation function.)