BW103225017140

收集的matlab符号运算的电子书籍与文档资料，对于熟悉了matlab数值运算想对符号计算有所了解的可以看看。(Matlab symbolic operation collected the e-books and documentation, for those familiar with the matlab numerical computation would like to understand the symbolic computation can take a look at.)

通信系统中用于设别调制方式的5个特征参数的提取(Communication Systems for the set up of other modulation characteristics of the five parameters extracted)

说明：  matlab特征值与特征向量的计算有14个例子代码(There are 14 example codes for calculating matlab eigenvalues and eigenvectors)

实现对OFDM系统的基本仿真实现基于Matlab软件的OFDM系统的一些基本仿真，含仿真源代码(Implementation of the OFDM system simulation to achieve the basic OFDM system based on Matlab software, some of the basic simulation, including simulation source code)

PSO算法优化PID参数,单回路高阶系统的PID参数优化，主程序，目标函数可以自己编写。(PSO algorithm to optimize the PID parameters)

利用模式理论，对给定几何尺寸以及折射率分布的光纤进行模式求解与绘图，该程序给出LP12模的求解与绘图。(the LP01 mode of the fiber)

基于滞后系统而改进的smith算法的PID实现(Lag system based on the improved PID algorithm to achieve smith)

HARQ LDPC 16QAM matlab编程(HARQ LDPC 16QAM matlab programming)

2FSK是利用数字基带信号控制在波的频率来传送信息。经过调制后的2FSK数字信号通过两个频率不同的带通滤波器f1、f2滤出不需要的信号，然后再将这两种经过滤波的信号分别通过包络检波器检波，最后将两种信号同时输入到抽样判决器同时外加抽样脉冲，最后解调出来的信号就是调制前的输入信号。(gudi hduidf hdag sdd w)

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) )