motionEstDS

针对OFDM系统，分成链路级仿真和系统级仿真两个部分。为了降低系统级仿真的复杂度，采用链路级仿真的部分结果。(It contains mainly two parts, i.e. link-level simulator and system-level simulator. Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation. System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate. Link-level simulator support SISO, 1 by x MRC, 2 by 1 STBC/SFBC, 2 by 2 Alamouti, x by 1 Antenna selection, x by y antenna selection. System-level simulator, currently support only SISO and 1 by 2 MRC. To start with, go into the folder sys_link_simu, and excute the following commond from matlab: sys_link_simu_func(a,b) where a is the link ada)

用MATLAB2008A编写的主成成分分析(MATLAB2008A prepared by Principal Component Analysis)

GMF（Graphical Modeling Framework）是Eclipse的一个开源项目，它在结合了EMF和GEF的 基础上，为基于模型的图形化编辑器的开发提供了一个功能强大的框架，开发人员可以采用建 模的方式很容易的生成高质量的代码框架。(GMF (Graphical Modeling Framework) Eclipse is an open source project, it combines the foundation on EMF and GEF, provides a powerful graphical editor framework for model-based development, developers can adopt the modeling approach easily generate high-quality code framework.)

求最短路径，用matlab编写的贪婪算法。(greedy algorithm)

利用常用四阶龙格-库塔公式求初值，再利用汉明公式、米尔恩公式和改进的四阶亚当斯隐式公式及常用的四阶龙格-库塔公式求解其余的数值解求解常微分方程初值问题，并计算它与精确解的误差(Use of commonly used fourth order Runge- Kutta initial value to the Formula, and then use the Hamming formula, Milne formula and improved fourth-order implicit Adams formula and the commonly used Runge- Kutta formula for solving the numerical solution for solving the remaining ordinary Differential Equations, and calculate the error it with exact solutions)

说明：  实现基本的pso算法（粒子群算法）和几篇文献资料(Pso realize the basic algorithm (PSO) and several literature)

考虑载波的qpsk信号在瑞利信道上的仿真(consider Carrier qpsk Rayleigh channel signal simulation)

实现复杂网络中社区发现的评价函数-模块度(Implement modularity in complex network with matlab.)

MATLAB编写界面很复杂，通过这个文档你能很快的实现(Written MATLAB interface is complex, through this document you can quickly achieve)

该文件是定性趋势分析代码，可以自动根据准确率要求自动选择阈值，拟合数据变化趋势，预测数据变化(This file is a qualitative trend analysis code that can automatically selected automatically based on the accuracy of the threshold requirements, fitting the data trends, forecasting data changes)