Autonomous-Systems

说明：  MATLAB通信仿真应用，不妨一看，很有帮助的(MATLAB communication simulation applications, it may look, very helpful)

this source code is very well

计算流体力学的网格划分，这是计算流体力学的基础(The computational fluid dynamics, this is the meshing computational fluid dynamics)

介绍了原型滤波器的设计，并比较了不同混叠因子下滤波器的性能(this code include the design of the prototype filter,which is widely used in the multicarrier communication.we also compare the performance with different coefficient.)

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)

This program includes the Gaussian Quadrature implementation in matlab.

source code for mathematical simulations

beat rate extraction

采用不同窗函数对信号进行了WELCH谱估计，并可以做出对比分析。(Different window function of the signal spectrum estimation WELCH, and can make a comparative analysis.)

How to calculate PSNR of a yuv video.