codedofdm

说明：  求最短路径 tsp matlab M文件(The shortest path tsp matlab)

A fast Fourier transform (FFT) is an algorithm to compute the discrete Fourier transform (DFT) and its inverse. Fourier analysis converts time (or space) to frequency and vice versa an FFT rapidly computes such transformations by factorizing the DFT matrix into a product of sparse (mostly zero) factors.

光纤光栅振动传感器的悬臂梁参数优化，包括四个变量，显示频率变化和灵敏度(optimization of FBG sensor)

基于matlab做的三维射线追踪的源代码。供大家交流之用。(based on Matlab do 3D ray tracing the source code. For exchange purposes.)

说明：  轮廓波工具箱，是一个非常有用的图像分解和合成变换(contourlet toolbox)

说明：  数值模拟实验，采用蝶形算法利用matlab实现的fft变换，针对指数函数，包含正fft以及逆变换。附带实验报告(Numerical simulation experiments, using butterfly algorithm fft using matlab to achieve transformation, for exponential function, including being fft and inverse transform. Incidental to the experiment report)

近似熵是由pincus在1991年提出的一种度量序列的复杂性和统计量化的规则(Approximate entropy pincus proposed in 1991 a measure of the complexity of the sequence and statistical quantization rules)

说明：  】利用混沌动力学系统中logistic 映射先对水印图像进行置乱预处理以增强其鲁棒性, 在小波域中将原始音频信号按比例分段, 此比例为原始音频信号低频部分与水印信号个数之比, 然后将水印信号加入到音频信号的 低频部分。用StirMark 攻击后的实验结果表明, 该算法对StirMark 的部分攻击具有一定的鲁棒性。(The logistic- map sequences to encrypt the watermark are used. The original audio signal in DWT (Discrete Wavelet Transform) domain is seperated into some pieces determined by the ratio between the length of the low frequency parts and the length of the encrypted watermark. Every bit of the watermark is added into the relevant pieces of the low frequency parts in the DWT domain. Experimental results show that the algorithm is robust against some StirMark attacks.)

说明：  APF和PF源码在其中，，都是比较经典的对比，，可以在命令窗口中直接运行得出结果。。(APF and PF source in which are more classic contrast, can be run directly in the command window outcome. .)

SDR Software Defined Radio overview and design for implementation via matlab.