How to plot the magnitude of the Fourier transform of sampled pulse response?

P(w) = 1 + 0.9e^(-jwT)

with T=1 and sampling theorem satisfaction I got P(e^-jw)= 1 + 0.9e^(-jw)

The pulse response is strictly band-limited in the Nyquist interval -Pi/T < w < Pi/T

What is the code for plotting the magnitude of the Fourier transform of sampled pulse response, i.e., 20log(|P(e^-jwT|)

Answer 1

[Image Analyst]

Did you try plot()? Like

plot(real(P), 'b-', 'LineWidth', 2);

[Shyngys Serikov]

Could you send the full code please?

[Image Analyst]

You asked about plotting: "What is the code for plotting the magnitude of the Fourier transform"

So assuming you have P, here is the full plotting code:

plot(abs(P), 'b-', 'LineWidth', 2);
grid on;
title('P vs. Frequency', 'FontSize', 18);
xlabel('Frequency', 'FontSize', 18);
ylabel('P', 'FontSize', 18);

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