x = rand(100,1); %輸入數(shù)據(jù)
num = rcosine(1,8,'sqrt'); %濾波器的轉(zhuǎn)移函數(shù) 
y1 = rcosflt(x,1,8,'filter',num); %在發(fā)端對(duì)數(shù)據(jù)進(jìn)行濾波
z1 = rcosflt(y1,1,8,'Fs/filter',num); %對(duì)接收數(shù)據(jù)進(jìn)行濾波，但不過(guò)采樣
z=z1(length(num):8:end);
stem(z(1:30),'.');hold on;stem(x(1:30),'r');
%% 方法二：
% x = rand(100,1); %輸入數(shù)據(jù)
% y2 = rcosflt(x,1,8,'sqrt'); %在發(fā)端設(shè)計(jì)濾波器，并對(duì)數(shù)據(jù)進(jìn)行濾波
% z2 = rcosflt(y2,1,8,'sqrt/Fs'); %在收端設(shè)計(jì)濾波器，并對(duì)接收數(shù)據(jù)進(jìn)行濾波，但不過(guò)采樣