FDTD_PML_009876

Wiener filter enhances quality of audio signal

speaker recognition system

program to code some properities in chaos

切比雪夫滤波器设计，通过输入设计参数，能够设计出切比雪夫滤波器的阶数、截止频率，并作出幅度响应(Chebyshev filter design, by entering the design parameters, to design a Chebyshev filter order, cutoff frequency, and amplitude response to)

说明：  仿真实现了十三位巴克码进行脉内调相。很好的程序，亲自优化过。(Thirteen Barker codes are simulated for intra-pulse phase modulation. Good procedures, personally optimized.)

瑞利衰落信道（Rayleigh fading channel）是一种无线电信号传播环境的统计模型。这种模型假设信号通过无线信道之后，其信号幅度是随机的，即“衰落”，并且其包络服从瑞利分布。(Rayleigh fading channel, Rayleigh fading channel) is a statistical model of radio signal propagation environment. This model assumes that the signal through a wireless channel, its signal amplitude is random, or "decline", and its envelope obey Rayleigh distribution. )

利用最小二乘解法进行离散数值拟合，得到逼近曲线(Discrete least-squares method for the use of numerical simulation, the approximation curve)

本书系统介绍MATLAB遗传算法和直接搜索工具箱的功能特点、编程原理及使用方法。(This book systematically introduce MATLAB Genetic Algorithm and Direct Search Toolbox features, programming principles and use.)

股票指数模拟为几何布朗运动，GBM。 参数有五个： s0，dt（time step），均值，标准差，到期时间T； 利用子函数进行10万条轨道的monte carlo 模拟到期日（3个月）的指数点数，从而估计在买入信号出现后，3个月后的损益情况，主要用来估算VAR (Financial risk analysis on Matlab monte carlo simulation, stock index simulation for geometric Brownian motion, GBM. )

这些资料都是有关数学建模的资料，包含多种算法，包括遗传算法，灰色预测等，希望对大家有帮助。(These data are related to the mathematical modeling of information, including a variety of algorithms, including genetic algorithm, the gray prediction, we want to help.)