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现代通信系统，第五章，课后作业题目的MATLAB源代码程序(Modern communication systems, chapter, after-school job)

说明：  本文涵盖了matlab的全部内容，简单易学，是快速入门的最直接办法。(This article covers the entire contents of matlab, easy to learn, is the most direct way to quick start.)

基于fdtd算法利用matlab软件编写的计算问题空间的程序，适合光电子和晶体等领域(Based on FDTD algorithm using matlab software to write the calculation problem of the space program, suitable for optoelectronic and crystal, etc)

该文件是现代信号处理课程中用到的关于小波处理的一些M文件(This file is used in modern signal processing course some documents on wavelet processing M)

奇异值分解用于英文文本检索，画出频率矩阵第一奇异值向量和第二奇异值向量的分布图( a fast retrieval algorithm for English texts is proposed. First of all, the English texts are mapped into frequency matrixes of order 26 and the dimensions of texts representation space are reduced through Singular Value Decomposition. Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. )

Keep this list arranged in rough order of priority.

Active contours or snakes" can be used to segment objects automatically. The basic idea is the evolution of a curve, or curves subject to constraints from the input data. The curve should evolve until its boundary segments the object of interest. This framework has been used successfully by Kass

AR自适应滤波器，用Kalman滤波器跟踪AR模型的吸收变化(adaptive AR model，use kalman filter to trace the variance of ar coeffience)

用于产生ASK调频信号，在通信原理课程和信号处理中比较常用(used to proceed ask signal, and it is very useful in signal processing)

MATLAB中读取TXT内容并转成二进制(asfsf dsfdfsf )