huaffman

this is a source code about k-nearest network

butterworth滤波器的matlab设计，通带截止频率0.3pi，阻带截止频率0.2pi(matlab butterworth filter design, the passband cutoff frequency 0.3pi, stopband cutoff frequency 0.2pi)

说明：  MATLAB编写的数值分析实验的一些小程序(MATLAB prepared by the numerical analysis of a number of small experimental procedure)

基于改进的ARMA模型 定阶预测方法，经过调试，程序能顺利运行(Improved ARMA model order prediction method, after debugging, the program can run smoothly)

A MATLAB based iterative threshold selection algorithm for cooperative sensing in a cognitive radio network.

VDSL的上行链路仿真，满足以下指标： 1.下行（局端到用户端）速率：20Mbps，上行（用户端到局端）速率：5Mbps；传输距离为500m；在Eb/N0 = 15dB时实现误比特率Pe<=10-4 2.可用信道频谱：0.138MHz-12MHz 3.双绞线模型采用RLCG模型，传输介质为0.4mm PE cable (simulation of VDSL up link)

MATLAB实现的高光谱图像的端元提取，可以自己下载高光谱图像，然后修改下程序就能用了。(MATLAB implementation of hyperspectral image endmember extraction of hyperspectral images can download and modify the following program can be used.)

测量稀土元素的光谱的matlab程序,可以作图，十分简单方便(REE spectra measurements matlab program, you can plot is very simple and convenient)

在matlab环境下，基于RGB，HSV模型的图像检索技术(In the matlab envirament , picture find based on the RGB and HSV model)

We consider a complex-valued wavefield reconstruction in an object plane from data in a sensor plane. A digital modeling for the forward propagation is presented in the algebraic matrix form M-DDT. The inverse propagation is formalized as an inverse problem. The main algorithm of the complex-valued wavefield reconstruction with the proposed Matrix Discrete Diffraction Transform (M-DDT) is prepared as a Matlab demo.