OFDMAsingalTimedomain

Modelo de dos rayos de Andrea Goldsmith (figura 2.5, según expresión 2.12) f = 0.9 frecuencia en GHz landa = 0.3/f en m R = -1 coeficiente de reflexión en tierra ht = 10 altura del transmisor en m hr = 2 altura del receptor en m Gt = 1 Gr = 1 Pt = 1 d=10:.1:100000 phase_diff = 4*pi*ht*hr./(landa*d) aproximación Pr = Pt*((landa/(4*pi))^2)*((abs((sqrt(Gt)./d) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff)))./d)).^2) Pr = Pt*((landa/(4*pi))^2)*(1./d).*((abs((sqrt(Gt)) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff))))).^2) figure(1), clf, plot((d),10*log10(Pr/max(abs(Pr)))) grid xlabel( log_1_0(d) ) ylabel( Potencia recibida (dBm) )

the file contains detection and estimation theroy codes

说明：  光子晶体带隙计算的例子，以前在3.5版本模型库里面有，但是4.2里面么了，希望对大家有所帮助。(Photonic band gap calculation example, the previous 3.5 version of the model library in there, but what a 4.2 inside, we want to help.)

空间信号的波达方向（Direction of Arrival，简称DOA）估计作为阵列信号处理研究的一个主要课题，在近些年来越来越得到大量的关注和研究。它可实现对空间中信源信号的准确的角度估计，实现信源方位等参数的具体精确检测，并且还具有很高的分辨力。这些特性使得DOA估计在声呐、通信及雷达等多种领域具有广阔的应用和发展前景。此程序为面阵中二维角度估计算法程序。(direction of arrival,usually called DOA,has been an important subject recently.This program contains unitary esprit)

利用 matlab的GUI 环境编写 多项式曲线拟合程序，及其界面，由于参数的输入是实时的、拟合过程可以实时显示，因而使用非常方便。(Using matlab GUI to prepare the environment polynomial curve fitting procedures, and its interface, as input parameters in real time, the fitting process can be real-time display, which is very convenient to use.)

说明：  关于生物膜的MATLAB软件，国外书上的，非常好(MATLAB software on the biofilm, foreign books, very good)

multi device antenna in matlab

Alpha stable generator

The MultiUAV2 simulation is a (Simulink/Matlab/C++)-based simulation that is capable of simulating multiple unmanned aerospace vehicles which cooperate to accomplish a predefined mission. The simulation is organized using the Mathworks Simulink simulation software, but most of the functionality is in Matlab script functions.(MultiUAV2is a non-real-time simulation that contains six-degree-of-freedom (6DOF) vehicle dynamics models, simple target models, and user-defined cooperative control algorithms.)

GB2312简体中文编码表,Ctrl + f +待查的中文(Simplified Chinese GB2312 encoding table, Ctrl+ f+ of unknown origin in Chinese)