chengxu

此算法是基于PN序列的经典的定时同步算法，能直接出图，望对大家有用(This algorithm is based on the classic PN sequence timing synchronization algorithms, directly out of maps, useful look on the U.S.)

扩频通信，从电磁波利用来看，与一般现有的常规通信方式完全不同。扩频通信利用伪随机编码把信息数据（窄带信号）的频谱进行扩展，形成宽带的低功率谱密度信号发射，使用不同的伪随机序列编码，不同通信用户可在同一频段、同一时间工作，互不影响或干扰极小地进行通信。(Spectrum, from the electromagnetic waves used term, and the general existing conventional means of communication is entirely different. Spread spectrum communication using pseudo-random code to the information data (narrowband signal) to extend the spectrum, the formation of low-power spectral density broadband signal transmission, using different pseudo-random sequence of coding, different communication users at the same frequency band, at the same time work, mutual does not affect or interfere with a very small way to communicate.)

Levinson-Durbin algorithm m file

说明：  用于一阶时滞系统的辨识，共有切线法与两点法的程序。经过测试，效果较好，适用于学习系统辨识的初学者。(First-order delay system for identification, a total tangent method and the two law procedures. Tested the effect is good for beginners to learn the system identification.)

matlabINS toolbox 3.0

This function is for optimization by strong wolfe condition

a simple project with a BouncinBall

对ITU-R P.838中计算雨衰减率的算法的实线(the function to calculate the rain specfic attenuation in ITU-R P.838 )

matlb编写的IIR滤波器程序，按照给定指标采用模拟低通滤波器（巴特沃思低通或者切比雪夫低通）去逼近理想模拟低通滤波器 ，然后通过双线性变换法对模拟滤波器进行数字化，得到数字滤波器 。(IIR filter matlb prepared by the procedure, according to set targets and analog low-pass filter (Butterworth low-pass or low-pass Chebyshev) approximation to the ideal analog low-pass filter, and then through the bilinear transformation method for analog filtering device to digitize, the digital filter.)

This package implements basic Principal Component Analysis and Eigen Faces in Matlab and tests is with grayscale portion of the FERET database. Images are not preprocessed and it is up to the user to preprocess the images as wanted, not changing the filenames.