Hello!
I am quite new at Matlab
I have tried to plot a multiple output function but all i got is the first out put.
this is the code :
function [h, H] = myrct (t,f,beta)
% In optical communication systems, different linear pulse-shaping filters
% are used to generate continuous-time transmit signals. We can define
% these filters either through their impulse response hp(t) or their
% frequency response Hp( f )=F{hp(t)}, where F{ } stands for the Fourier
% transform.
% rct: Raised-cosine time domain (RCT-Filter)
% Time Domain
h = (1 + cos((pi./beta).*(abs(t)-(1-beta)/2)))/2;
h(abs(t)>(1+beta)/2) = 0;
h(abs(t)<(1-beta)/2) = 1;
h(abs(t)==1/2) = 1/2;
% Frequency Domain
% H = fftshift(fft(h),1);
H = sinc(f).*cos(pi.*beta.*f)./(1-(2*beta.*f).^2);
H(f == -0.5/beta) = sinc(1/(2*beta))*pi/4 ;
H(f == +0.5/beta) = sinc(1/(2*beta))*pi/4;
end
I tried to use :
figure
plot(myrct(t,f,beta))
hold on
It doesn't work and it plots only the first output 'h'.
i tried also
figure
plot(H)
hold on
but I got a msg of Unrecognized function or variable 'h'.
Here are the constants:
l=randi(50,1)
N=randi(50,1)
t=(-l*N/2:l*N/2-1)'/N;
f=(-l*N/2:l*N/2-1)'/l;
beta=rand(1)
please help me with this
Best Answer