modelcs_v1.1

ML estimation of frequency synchronization

uwb信号中高斯脉冲的产生，频谱等等的程序(Gaussian uwb pulse signal generation, spectrum of procedures and so on)

基于遗传算法的自动组卷算法，能实现按照知识点、难度、区分度的自动试题提取组卷。(Automatic test paper based on genetic algorithm, can achieve according to knowledge, the difficulty of distinguishing the degree of automatic extraction of test paper questions.)

单频率成分的离散频谱校正源程序（能量重心校正法）。针对单一频率谐波信号的离散频谱校正，可选择加矩形窗和汉宁窗。已调试通过。(Matlab Codes for Ratio correction based on different window.Rectangle and Hanning Window can be choose to act.)

说明：  neural network application book

The LMSE package contains two subroutines. LMSE computes the minimum mean square error (MSE) possible if one image is allowed to be linearly scaled in intensity. LMSEDIFF computes the difference image after the target image is scaled according to the scaling that minimizes the MSE. This is a better way to compare images if the absolute magnitude of the intensity has no meaning.

写一个MATLAB程序，实现4个时间同步的CDMA用户的仿真，其中每个用户都使用长度为L=31的不同的Gold序列。每个用户都采用它们代表的Gold序列的二进制（+-1）调制。每个用户的接收端将这个复合的CDMA接收信号相关，而这个复合的信号都在它们各自的序列上受到AWGN的污损（基于按码片相加）。在N=10000信息比特下，仿真估值并画出作为SNR的函数的CDMA通信系统的差错概率。(Write a MATLAB program, the realization of the four time synchronization of the simulation of CDMA users, including the length of each user for use of the L = 31 different Gold sequences. They are used for each user on behalf of the Gold sequence of binary (+-1) modulation. Each user' s receiver will receive the composite CDMA signal, and this composite signal in the sequence of their respective defaced by the AWGN (additive based on the chip by). Information in the N = 10000 bits, the simulation value and draw as a function of SNR of the CDMA communication system the probability of error.)

很实用的MATLAB SVM KNN算法,适合7.0以上的办版本使用。(very good)

利用卷积进行合成地震记录，采用雷克子波，反射系数给出(Convolution of the synthetic seismograms by using the Ricker wave reflection coefficient is given)

OMP code can be found here