hanshujizhi

find maximum power point in a PV cell

互相关函数,cross-correlation function

对于移动通信系统主要有两类衰落：大规模衰落和小规模衰落。大规模衰落表示由于大范围内移动而引起的平均信号能量的减少或路径损耗。而小规模衰落则表现为两种机制：信号的时延扩展和信道的时变特性。对于无线应用，信道的时变特性是由于发射机和接收机相对移动而造成传输路径的变化。这些传播条件的变化速率影响衰落率。如果存在大量反射路径而不存在视行信号分量，此时的小规模衰落称为瑞利衰落(Rayleigh fading)，接收信号的包络由瑞利概率分布函数统计描述。这种衰落也就是这次实验我准备研究的(system for mobile communications fading there are two main categories : large-scale and small-scale fading fading. In view of large-scale decline of large scale movement of the average energy of the signal path to reduce or loss. And the decline of small-scale, it was manifested as two mechanisms : signal delay expansion and channel time-varying characteristics. For wireless applications, channel time-varying characteristics as transmitter and receiver relative movement caused transmission path changes. These conditions spread of the rate changes affect the rate of decline. If there is a large number of pathways exist without depending on the signaling component, At that time, the decline of small-scale known as Rayleigh fading (Rayleigh fading). The received signal envelope from Rayleigh )

Matlab code for Image registration of the mri images .. the file has the mri image and registration of scaling ..affine registration is performed here..

nmf盲源分离，使用欠定的方法，可以用来分离两路语音信号，人声与其他音的分离(nmf_bss.The underdetermined method can be used to separate two voice signals, human voice and other voices.)

说明：  energy efficiency of noma

Splash Window. A windows program demo.

程序用matlab实现基于模板和肤色的人脸检测,首先利用肤色信息检测出可能的人脸区域,然后进行模板匹配.可以实现一幅图片中多人脸的检测.(procedures using Matlab based templates and color of face detection, the first to use color information may detect a face, then template matching. can be achieved over a picture of face detection.)

mimo-ofdm 自适应的比特:分配按照信道响应降序排列,子载波间争夺比特和功率步长为2(mimo-ofdm adaptive bit: assigned in descending order according to the channel response, the rivalry between subcarriers bit and power step 2)

随机调制信号下的模拟ppm，小波包分析提取振动信号中的特征频率，主要是基于mtlab的程序。( Random ppm modulated analog signal under Wavelet packet analysis to extract vibration signal characteristic frequency, Mainly based on the mtlab procedures.)