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说明：  本文件为深圳杯数学建模大赛D组题目的全部相关程序，没有题目 只有解答过程和程序~已经把数学问题精炼出来了(This document is all related procedures for group D questions of shenzhen cup mathematical modeling contest. There are no questions, only the solving process and procedures. The mathematical problems have been refined.)

一个用matlab开发的用于图像处理小波变换工具箱，希望对大家有帮助(With the development of a matlab wavelet transform for image processing toolbox, and they hope to have everyone help)

极小化误差平方和算法聚类源代码，下载后直接运行就可以了(Minimizing the error sum of squares clustering algorithm source code can be run directly after downloading the )

这是基于matlab的信号系统实验程序，可以完成信号系统课程的相关实验，提高信号系统课程的认识和理解。(This is based on the signaling system matlab experimental procedure, you can complete courses related experiments signaling system, improve the signal system course knowledge and understanding.)

linespectrum提取声音信号的线谱(in order to extract line spectrum)

Watermarking text to image by using watermarking

Ackley测试函数，经过实验的确可以用，哈哈，分享给大家(Ackley test function, indeed can be used through the experiment, ha ha, for everyone to share)

matlab three phase converter file

实现基于BPSK的直接扩频信号调制，并显示出各阶段信号波形。(Direct-based BPSK modulated spread spectrum signal, and shows the signal waveform of each phase.)

该程序给出了使用梳状导频信号的OFDM系统的仿真研究，使用了LS信道估计，最后画出了误码率图(The program gives the simulation of a comb pilot signal OFDM system using the LS channel estimation, and finally draw a diagram BER)