prac_simu_wrk

Space time coding - Alamouti scheme(Space time coding- Alamouti scheme)

基于matlab的光学实验模拟，能很好体现matlab在这方面的优点(Optical-based experimental simulation matlab, matlab reflected well the advantages in this area)

Entropy is a thermodynamic property that can be used to determine the energy available for useful work in a thermodynamic process, such as in energy conversion devices, engines, or machines. Such devices can only be driven by convertible energy, and have a theoretical maximum efficiency when converting energy to work. During this work, entropy accumulates in the system, but has to be removed by dissipation in the form of waste heat.

算术编码的Matlab实现，用于该编码的各种压缩、加密应用中，参考程序。(Arithmetic Coding program using Matlab.)

To calculate gravitation field between moon and earth using charge simulation methods

基于vs+MATLAB的icp基本演算法(Based on the icp vs+ MATLAB basic algorithm)

说明：  a common use of fourier transforms is to find the frequency components

旁瓣相消Sidelobe cancellation，抑制杂波，尤其在杂波较信号较强的情况下(Sidelobe cancellation Sidelobe cancellation, clutter suppression, especially in the strong clutter signal where more)

本代码主要用于数字水印技术中的空间域中的最低有效位算法，用于数字产品中的版权保护问题。(This code is mainly used for the least significant bit algorithm for digital watermarking technology in the spatial domain for digital products copyright protection issues.)

对于噪声中的正弦信号，通过周期图法、AR模型法、Pisarenko谐波分解算法、MUSIC算法和ESPRIT算法进行频率估计，使用N=128个数据样本进行估计. (By the periodogram method, AR model method, the Pisarenko harmonic decomposition algorithm, MUSIC algorithm and the ESPRIT algorithm for sinusoidal signals in noise, frequency estimation, N = 128 data samples to estimate.)