pca

Nearest neighbor algorithm to solve TSP

This code is useful for time series problem.

DSP course Solution_of_Tut1-_Intro

Debye级数展开模型，计算均匀球形粒子散射角——散射光强曲线： 1. RB1.m 计算第一类Ricatti-Bessel函数的函数 2．RB2.m 计算第二类Ricatti-Bessel函数的函数 3. Alegendr.m 计算角函数 和 的函数 4. MieCoeff.m 计算米尔系数的函数 5. Amp.m 计算散射光复振幅的函数 6. DebyeIntensity.m Debye级数展开模型画均匀球形粒子散射角-光强图 (Debye series expansion model to calculate the uniform spherical particles scattering angle- scattering intensity curve: 1. RB1.m calculated first class Ricatti-Bessel function of the function 2. RB2.m calculate the second category Ricatti-Bessel function of the function 3. Alegendr.m computing angle functions and function 4. MieCoeff.m Mill coefficient calculation function 5. Amp.m calculate the scattering amplitude recovery function 6. DebyeIntensity.m Debye series expansion model painted uniform spherical particles scattering angle- light intensity diagram)

是一个小波降噪的程序，里边包括了小波降噪的实例，有三种方法：默认阈值去噪；软硬阈值的去噪；强制性去噪。(Is a wavelet noise reduction program, including the inside of the Wavelet Transform instance, there are three ways: the default threshold denoising hard and soft threshold de-noising mandatory de-noising.)

说明：  oqpsk信号，滚降系数分别为0.4，0.7，1.0.信噪比为20bB(OQPSK signal, roll-off coefficients were 0.4,0.7,1.0. 20bB SNR)

包含有希尔伯特黄变换的主程序、边际谱的计算方法、并绘制了仿真信号的FFT频谱和功率谱，并调用emd分析方法，绘制了emd分解结果，以及瞬时包络和瞬时频率图，还有Hilbert-Huang谱和Hilbert边际谱( Including the main program of the Hilbert Huang transform, marginal spectrum calculation method, and draw the simulation signal FFT spectrum and power spectrum, and call EMD analysis method, drawn EMD decomposition, and instantaneous amplitude and instantaneous frequency map and Hilbert spectrum and Hilbert marginal spectrum)

单径或多径瑞利衰落信道仿真，ldpc码的编解码实现，基于人工神经网络的常用数字信号调制。( Single path or multipath Rayleigh fading channel simulation, Codec ldpc code implementation The commonly used digital signal modulation based on artificial neural network.)

LADT ECG Compression Algorithm 1

一些MATLAB的有关无线信道衰落的仿真源代码(Some of the wireless channel fading MATLAB simulation source code)