How to plot this equation?

How to plot this equation e parameters are known

Answer 1

[Jannis Reich]

Hello Haider al-kanan,

My suggestion is that you write a function P_r(f).

function P_r_result=P_r(f)

R_s=1;
N_ST=10;
delta_f=.1;
k=[-N_ST/2:-1 1:N_ST/2];

for l=1:length(f)
  P_r_result(l)=0;

    for i=k
       P_r_result(l)=P_r_result(l)+R_s*abs(W(f(l)-i*delta_f)).^2; 
    end

end

end

function W_result=W(f)

T_s=1;
T_TR=1;

W_result=T_s*sinc(T_s*f)*(cos(pi*T_TR*f))./(1-4*T_TR^2*f.^2).*exp(-1j*pi*T_s*f);

end

And then in simply specify your f-values:

f=-10:.1:10;

plot(f,P_r(f))

There may be more compact solutions, but I think this one does the job.