HHT)

ULTRSIM是一款超声图像仿真软件，可以作为超声图像仿真研究的工具，附有matlab代码(ULTRSIM is an ultrasound image simulation software can be used as a tool for simulation of ultrasonic images)

this is the matlab program for amplify and forward

jpeg compression , use DCT, Zigzag, Quantization,IDCT, InvZigzag, huffman to do the compression with matlab

改进后的游程编码，可以继续量化编码转化为二进制数据流，针对一些较为接近的数，通过合适的阈值设定可以近似，从而大大压缩数据流(The improved run-length coding, can continue to quantify the code into binary data stream, for some of the more close to the number set by appropriate threshold can be approximated, thereby greatly compressed data stream)

用matlab编程计算积分，包括梯形算法，龙贝格算法，高斯算法，通过具体案例得到最终结果(Calculation of integrals with MATLAB programming, including trapezoidal algorithm, Romberg algorithm, Gauss algorithm, the final results are obtained through the concrete case)

喷泉码的MATLAB仿真，喷泉码在分组传输网络中有很大的应用(MATLAB codes of Raptor codes )

平台惯导初始对准程序仿真 (platform alignment)

using simulated annealing to find optimum of 3D function

说明：  设计一个理想通信系统，实现信息字符流的传输。 发射器： <1>将消息（字符串形式）编码成一个符号序列； <2>用脉冲成形将串符号序列转变成模拟脉冲信号； <3>将模拟脉冲信号调制到载波信号上。 接收器： <1>对接收的信号进行采样； <2>解调信号成基带信号； <3>将信号恢复成字符串。(Design an ideal communication system, the realization information transmission of character flow. Emitters: < 1 > will news (string form) coding into a symbol sequence < 2 > by using a pulse forming will string of symbols into a simulation pulse signal sequences < 3 > will simulate the pulse signal modulation to carrier signal. Receiver: < 1 > of received signal sampling < 2 > demodulation signal into baseband signal < 3 > will signal back into a string.)

说明：  基于MATLAB/GUI的M-QAM调制解调及误码率,本文件是在MATLAB2009a版本上设计的，低于此版本的有可能会出错。 此文件中“M_QAM.m”是主文件，其他均为调用文件,该程序实现了MQAM的调制解调功能，并画出了每一步的波形 (Based on MATLAB/GUI s M-QAM modulation and demodulation and bit error rate, this document is designed MATLAB2009a version, this version is lower than might be wrong. This file is in the " M_QAM.m" is the main document, others are calling the file, the program implements the MQAM modulation and demodulation functions, and draw the waveform of each step)