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% 椭圆带通滤波器设计 % ELLIP函数的应用 % % 数字低通滤波器指标: % 椭圆型带通: ws = [0.3*pi 0.75*pi]; % 数字阻带边缘频率 wp = [0.4*pi 0.6*pi]; % 数字通带边缘频率 R

% 切比雪夫-2带阻滤波器设计 % CHEBY2函数的应用 % % 数字低通滤波器指标: % 切比雪夫-2型带阻: ws = [0.4*pi 0.7*pi]; % 数字阻带边缘频率 wp = [0.25*pi 0.8*pi]; % 数字通带

% script that generates the figure 3.4 of Carrier modulation chapter snrindB=0:0.25:18; for i=1:length(snrindB), snr=10^(0.1*snrindB(i)); P2(i)=Qfunct(sqrt(2*snr)); P4(i)=2*Qfunct(sqrt(4*sn

clear; close all; N=21; wc=3*pi/4; n=0:N-1; r=(N-1)/2; hdn=-sin(wc*(n-r))/pi./(n-r); if rem(N,2)~=0 hdn(r+1)=1-(wc/pi); end hn1=fir1(N-1,wc/pi,'high',boxcar(N)); hn2=fir1(N-1,wc/pi,'hig

%有四种窗口类型供选择 b=1; close all; i=0; while(b); temp=menu('选择窗函数长度N','N=10','N=15','N=20','N=25','N=30','N=33','N=35','N=40','N=45','N=50','N=55','N=60','N=64'); menu1=[10,15,20,25,30,33,35,40,45,50,

t=0:pi/20:2*pi; y1=sin(t); y2=cos(t); figh=figure('Position',[30,100,800,350]); axes('GridLineStyle','-.','XLim',[0,2*pi],'YLim',[-1,1]); line('XData',t,'YData',y1,'LineWidth',2); line(t,y2); g

clf; %清除图形窗口中的内容 x=linspace(0,2*pi,20); y=sin(x); axes('Position',[0.2,0.2,0.2,0.7],'GridLineStyle','-.'); plot(y,x); grid on axes('Position',[0.4,0.2,0.5,0.5]); t=0:pi/1

x=linspace(0,2*pi,60); y=sin(x); hf=figure('Color',[0,1,0],'Position',[1,1,450,250],... 'Name','我的图形窗口','NumberTitle','off','MenuBar','none',... 'KeyPressFcn', 'plot(x,y);axis([0

x=linspace(0,2*pi,1000); y1=0.2*exp(-0.5*x).*cos(4*pi*x); y2=2*exp(-0.5*x).*cos(pi*x); k=find(abs(y1-y2)

x=-pi:.1:pi; y=sin(x); y1=sin(x); y2=cos(x); h=line(x,y1,'LineStyle',':','Color','g'); line(x,y2,'LineStyle','--','Color','b'); xlabel('-\pi \leq \Theta \leq \pi') ylabel('sin(\Theta)') title(