jiaquanjuzhen

3d-fdtd算法的遗传基因算法matlab模拟(3d-fdtd genetic algorithm matlab simulation algorithm)

扩频通信中PN码同步仿真实验，中间无任何错误，可直接使用(can use)

1. BPSK modulation of data which ever you input (default data is “MANIPAL REDDY”). 2. MANIPAL REDDY is changed into ASCII Format and into two-bit format for BPSK Modulation. 3. Chaos is used for spreading the binary bit sequence. 4. Uniformly distributed Noise is added to Spread signal. 5. After reception Chaotic Chip sequence is used to recover message . 6. Filter is used for removing spikes and noise. 7. Note the filter is used is just for showing a little realisitic picture. 8. Appropriate filter should be used. 9. The original data in binary and recovered data in binary format are compared

a.阅读的图像img_1.tif，img_2.png的文件夹中，并 他们展示于一体，这两个数字分别。 （参考函数：imread, imshow, figure, subplot） b.在matlab，观察从工作区中的图像信息面板 c.分别使用size, imfinfo,whos等功能获得的图像信息 d.添加标题的图像。 （参考函数：title） Ë 。下面的代码实现的M文件编辑器 f=imread(‘img_1.tif’) imshow(f) set(figure(1), NumberTitle , off , Name , my first image’) 观察结果，并确定的功set() f。保存img_1.tif目录“D： imagetest”。如果该文件夹不 存在，请首先创建这个新的文件夹。 （参考函数：imwrite） (a. Read the images img_1.tif, img_2.png given in the folder, and show them in one and two figures respectively. (referenced function: imread, imshow, figure, subplot) b. In matlab, observe the images information from the workspace Panel c. Use size, imfinfo,whos,etc functions to obtain image information respectively. d. Add title to the images. (referenced function: title) e. Implement the following codes in the M-file Editor f=imread(‘img_1.tif’) imshow(f) set(figure(1), NumberTitle , off , Name , my first image’) observe the result, and determine the function of set() f. Save img_1.tif to the directory “d:imagetest”. If the folder does not exist, please create this new folder first. (referenced function: imwrite))

matlab实现了OFDM功能，ACO-OFDM可以在可见光中使用。(Orthogonal frequency division multiplexing (OFDM) is a modulation technique which is now used in most new and emerging broadband wired and wireless communication systems because it is an effective solution to intersymbol interference caused by a dispersive channel. )

说明：  按照书本上教材编写的自适应中值滤波函数，很有参考价值(Materials prepared in accordance with the books adaptive median filtering function, a good reference)

对小波系数的s变换，t＋s变换，以及变换系数的规范化(of wavelet transform coefficient s, t+ s transformation, and the standardization of transform coefficients)

Sigma_delta调制器的matlab模型和完整代码，可通过仿真观察输入输出信号波形以及输出的频谱，最后还说明了如何计算信噪比(Sigma_delta modulator of matlab models and complete code, can observe the simulation input/output signal waveform and the output spectrum, finally also illustrates how to calculate the SNR)

This function computes autocorrelation with a biased scaling.

流形学习8中方法，可自由选择种类、参数，欢迎下载、讨论(8 manifold learning methods are free to choose the type of the parameter)