APF

此函数用于IS-95前向链路系统的仿真，包括扩 频调制，匹配滤波，RAKE接收等相关通信模块。 仿真环境: 加性高斯白噪声信道. 数据速率 = 9600 KBps (CDMA)

基于结构相似度的图像质量评价matlab代码(Matlab code image quality assessment based on structural similarity)

matalab similink 单相锁相环 仿真建模(matalab similink singal PLL simulation)

最大熵复原MATLAB程序，可以直接运行，注释详细，并可与维纳、盲LUCY方法作比较，希望对初学者有一些帮助(Maximum entropy restoration MATLAB program can run, comment in detail, and can and Wiener, blind method for comparison LUCY, I hope there is some help for beginners)

线性规划，matlab实现的两个引例，数学建模(Linear programming, matlab implementation of the two cited cases, mathematical modeling)

维纳滤波的四个实现 包括文档和matlab代码，对原理阐释的十分详尽(Wiener filtering of the four to achieve, including documents and matlab code, very detailed explanation of the principles of)

用Parzen窗法或者kn近邻法估计概率密度函数，得出贝叶斯分类器，对测试样本进行测试，比较与参数估计基础上得到的分类器和分类性能的差别.2． 同时采用身高和体重数据作为特征，用Fisher线性判别方法求分类器，将该分类器应用到训练和测试样本，考察训练和测试错误情况。将训练样本和求得的决策边界画到图上，同时把以往用Bayes方法求得的分类器也画到图上，比较结果的异同。3．选择上述或以前实验的任意一种方法，用留一法在训练集上估计错误率，与在测试集上得到的错误率进行比较。(Use Parzen Windows method or the kn neighbor method estimated probability density function, draw the bayes classifier, to test sample to test, and the parameter estimation is based on the classifier and get the difference of classification performance. 2. At the same time the height and weight data as the characteristic, with Fisher identification method for linear classifier, and the application of the classifier to training and test sample, investigation and test training error condition. Will the training sample and utility of decision on the drawing boundary paint, and at the same time before the Bayes method with optimal classifier also paint chart, the result of the comparison of the similarities and differences. 3. Select the above or before any a kind of method of experiment, with a method for training set in the estimation error rates, and on the test set get error rates are compared.)

  Matlab中如何求一个序列的极值？在Matlab中有专门求序列最大值和最小值的函数，分别是Max  和  Min，但是有时候我们不满足于求整个序列的最值，而是对序列的极值，也就是局部的最值感兴趣。对于解析函 数，这个比较简单，只要令一阶倒数为零求出对应的自变量就行了。(Matlab how to seek a extremum sequence? In the Matlab there is a special function for sequence of maximum and minimum values, respectively is Max and Min the value, but sometimes we do not meet for the whole series, but the extremum sequence, also is the value of local interest. For analytic functions, this is relatively simple, as long as the countdown to zero order and related variables on the line.)

turbo码中常用的交织器，S-随机交织(The turbo code interleaver, S-random interleaver )

学习并找到降噪方法，对语音信号背景噪声做处理，使得声音更清晰。(The background noise is the most common factor degrading the quality and intelligibility of speech in recordings. Spectral subtraction can lower the noise level without affecting the speech signal quality. In this paper, we have studied and implemented to reduce the background noise of the voice signal, and to make improvements to reduce the background noise of the experiment. Not only with the spectral subtraction of the noisy signal of the transformation, we improve the traditional spectral subtraction based on the introduction of the parameters, by adjusting the parameters(α、β、γ) to achieve better enhancement.)