j_four_1

说明：  直接将matlab中的数据，图像，表格窗口存入到ppt里。(Matlab data directly into the ppt there.)

本程序根据训练好的网络文件ANN.mat预测新的数据文件，得到均方误差，并画出预测数据和原数据的对比图。此程序运用到了很多Matlab编程中常用到的表达方式，还有一些神经网络编程的基本概念的表达，如归一化的表达(This procedure according to the trained network file prediction ANN.mat new data file, the mean square error, and painted the original data and prediction data comparison of Fig. This procedure applied to a lot of Matlab programming to the expression commonly used, and some neural network programming the expression of the basic concepts, such as the normalized expression)

MATLAB课程设计基于Matlab和双线性变换的滤波器设计 (MATLAB course design based on MATLAB and bilinear transformation of filter design)

Define a macro that takes a le32 word, converts it to host ordering, right shifts by a specified count, creates a mask of the specified bit count, and extracts that number of bits.

形态学操作，图像的膨胀和腐蚀操作，使用matlab进行实现。(Morphological operations, image dilation and erosion operations, using matlab to achieve.)

fourier tramsform this program doese fourier transform to given picture using convlotion methods

编程产生一组随机的0、1二进制比特序列，分别用2ASK, 2FSK, 2PSK和2DPSK四种调制方式把它们调制到一个较高的载频上，调制参数自定，请给出前8个比特所对应的时域波形。 画出上述四种信号通过高斯白噪声信道后的相干解调器和非相干解调器的原理框图，并给出判决前的观测值的数学表达式。注: 如果某些调制方式无法进行非相干解调，请给出原因。 根据题2中的观测值的数学表达式，分别编程实现判决过程，将判决结果与原数据作比较，统计出各自在不同比特信噪比 值下的误比特率 ，然后画出 与 (dB)的曲线。建议 的范围为 0dB 到10dB, 以1dB为间隔。 将上述仿真得到的误比特率曲线与各自的理论值画在同一张图上进行比较并讨论。同时， 比较和讨论不同调制与解调方式的差错性能区别。(emulate 2ASK, 2FSK, 2PSK and 2DPSK using matlab)

对脑电信号进行小波分解并重构，提取脑电信号不同频段的成分(Decompose EEG and then reconstruct it to get different component)

Weighted covariance function. Allows to give more weight on recent observations.

QGA_fxy是用量子遗传算法（quantum genetic algorithm）解决二元函数寻优的问题。文件打开后运行QGA_fxy.m文件即可得到结果，代码中有详细注释，方便修改。运行示例已经保存为图片附在压缩包中。(QGA_fxy binary function is to solve optimization problems using quantum genetic algorithm (quantum genetic algorithm). Run QGA_fxy.m file to get the file to open the result, the code has detailed notes, easy to modify. Run the sample has been saved as a picture attached to the compressed package.)