modtion1.asv

伪随机码

function [tz1]=modtion1(pn1,tb1,tb2,tb3,fs2,fs3)
N1=length(pn1);
N2=(N1*tb1)/tb3;
t1=tb3:tb3:tb3*N2;
sin1=sin(2*pi*fs2*t1);
sin2=sin(2*pi*4*fs2*t1);
N3=length(sin1);
N4=fix(N3/N1);
N3
N2
tz1=zeros(1,N3);
% figure
% plot(t1,sin1)
for i=1:1:N1
    if pn1(1,i)==1
        tz1(1,(i-1)*N4+1:(i-1)*N4+N4)=sin1(1,(i-1)*N4+1:(i-1)*N4+N4);
    else
        tz1(1,(i-1)*N4+1:(i-1)*N4+N4)=-1*sin1(1,(i-1)*N4+1:(i-1)*N4+N4);
    end
end
figure
plot(t1,tz1)
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