Newton-iteration-

用matlab编程产生非线性动力系统的时间序列，并对序列做各种分析(Matlab programming with non-linear dynamical systems have time-series, and do all kinds of sequence analysis)

说明：  用面包师算法进行图像的置乱，首先是将图像分为4个部分，对每一个部分采用不同的变换方法(With baker image scrambling algorithm, first the image is divided into four parts, each part of the transformation method using different)

一种新型的智能算法，磷虾群优化算法，用来进行标准函数的优化(A new kind of intelligent algorithm，Krill herd optimization algorithm)

Communicate with a seriel port, specially with an arduino

说明：  五点三次平滑法可用作时域和频域信号平滑处理。对时域作用是减少混入振动信号中的高频随机噪声。对频域是能使谱曲线光滑。(Three five-point smoothing method can be used as time domain and frequency domain signal smoothing. Effect on the time domain vibration signals to reduce high-frequency mixed with random noise. On the frequency domain is the spectral curve can smooth.)

image match with guide

使用MATLAB函数中的FFT命令计算离散时间信号的频谱，以加深对离散信号的DFT的理解及其FFT算法的运用。(using MATLAB function FFT calculation order discrete-time signal spectrum, to increase the discrete signals in the DFT and FFT algorithm understanding of the application.)

本文在介绍MIMO无线通信系统模型的基础上，通过对比分析几种常用空时编码方法，选定空时分组码对信号进行编码并建立瑞利衰落信道模型，通过对两发一收及两发两收系统的仿真，研究接收天线数对系统接收信号可靠性的影响。之后进一步扩展到不同发射矩阵条件下研究多发一收系统的频谱利用率及误符号率，分析不同天线数目，不同发射矩阵条件下空时正交分组码检测算法的性能。(This paper introduced the MIMO wireless communication system model, through the comparative analysis of several commonly used method of space-time coding, grouping code for the selected space-time signal is encoded and establish Rayleigh fading channel model, through two rounds one and two rounds of closing Simulation of two closed systems, research receiving antennas to receive signals affect the reliability of the system. After further extended to study the conditions under different emission matrix of multiple spectral efficiency and symbol error rate of a closed system, analyze the different number of antennas, the performance under different emission matrix orthogonal space-time block codes condition detection algorithm.)

包含各种matlab仿真的源程序，同时从基础上开始介绍matlab的使用，包括矩阵运算等。(Includes a variety of matlab simulation of the source, also introduced from the beginning based on the use of matlab, including matrix operations, etc..)

PPM调制的超宽带系统RAKE接收机的误码率仿真程序(BER simulation of PPM_UWB system)