mc_cdma

matlab仿真数字通信系统2fsk调制，以及相干解调(matlab simulation of digital communication systems 2fsk modulation, and coherent demodulation)

说明：  matlab基础知识，PPT文件，内部资料简单，对于深入学习的人不是很合适(matlab basic knowledge, PPT files, internal information is simple, the depth of learning are not very suitable)

快速定位和构图的源码，一个简单的例子，3D建模，可以用作学习智能机器人自主移动的例子(Rapid positioning and the composition of the source code, a simple example, 3D modeling, can be used to study the intelligent autonomous mobile robot example)

说明：  一、 简介 本仿真软件可以仿真波片对偏振光的相位调制过程。用户可以通过改变波片的类型，波片长轴与X轴的夹角，起偏器透光与X轴的夹角，检偏器透光轴与X轴的夹角等参数，来观察屏上光强及透过波片后的偏振光的信息。 建议在Matlab2008a或以上平台上运行本软件。 (I. Introduction The simulation software can simulate wave plate for polarization phase modulation process. Users can change the type of wave plate, wave plate angle between the long axis and the X-axis, from the transmission side device and the X-axis angle, the transmission axis of the polarizer angle between the X-axis parameters to the viewing screen glazing strong and polarized light through the wave plate information. Recommended Matlab2008a or run the software on the platform above.)

matlab程序，本程序为样本熵程序，程序可运行，是很好的特征提取参数.(matlab procedures, the procedures for sample entropy, the program can be run, is a good feature extraction parameters.)

TEXT文件格式的100例，matlab设计实用程序。算得上是一本matlab CODE编程的合集。(TEXT file format of the 100 cases, matlab design utility. Can be considered a collection of matlab CODE programming.)

选择五个不同频段的信号对其进行频谱分析，根据信号的频谱特征设计五个不同的数字滤波器，将五路信号合成一路信号，分析合成信号的时域和频域特点，然后将合成信号分别通过设计好的五个数字滤波器，分离出原来的五路信号，分析得到的五路信号的时域波形和频谱，与原始信号进行比较，说明频分复用的特点。(To select one of five different band signal spectrum analysis and design of five different digital filter based on the spectral characteristics of the signal, the the Rd signal synthesizing all the way to the signal analysis in time domain and frequency domain characteristics of the synthesized signal, and then the synthesis signal by five digital filter designed, separated original signal Rd, the time-domain waveform and spectrum analysis the Rd signal is obtained, to be compared with the original signal, the frequency division multiplexed with the characteristics.)

此代码为图像处理技术中的沃尔什-哈达玛变换，实现图像的压缩处理(This code is an image processing technology Walsh- Hadamard transform, image compression)

MATLAB及在电子信息课程中的应用，感觉很有用.(MATLAB and in the course of electronic information, I feel useful)

The ADPCM package is a flexible simulation tool for an adaptive differential encoder and decoder with backward predictor adaptation. It uses an LP-based (Burg) adaptive predictor and a nonuniform quantizer with mu transfer function. It generates the encoded bitstream and estimates the efficiency of a Huffman code for the compressed sequence.