bpsk_04.m

信号BPSK源程序

clear all;
%%生成多载波BPSK信号，每个载波5个信号
%Fc=[5e6,8e6,10e6,12e6,15e6,20e6];%载频
%B = 8e6; %带宽
rb = 1e6;  %码元速率
fs = 8e7; %采样频率
lt =4e-4;%时间长度
%f=[5,8,10,12,15,20];
ldata = rb*lt;
data = round(rand(1,ldata));
data = data.*2-1;
[ys,ts] = rcosine(rb,fs,'fir/sqrt',0.4);
[yc,tc] = rcosflt(data,rb,fs,'filter',ys);
y = yc';
for t=1:length(y)
y(t)=y(t)*cos(0.25*pi*t);
end
%y=y(241:32240);
yc= y./max(abs(y));
signal=awgn(y,20,'measured',[],'db');  
long=8;