Plot Frequency Spectrum of Binary Sequence in Matlab

1. How do you draw a frequency spectrum of a signal?
2. How do you represent a signal in the frequency domain in MATLAB?
3. How to plot FFT output in MATLAB?

How do you draw a frequency spectrum of a signal?

Frequency spectrum of a signal is the range of frequencies contained by a signal. For example, a square wave is shown in Fig. 3.5A. It can be represented by a series of sine waves, S(t) = 4A/π sin(2πft) + 4A/3π sin(2π(3f)t) + 4A/5π sin(2π(5f)t + …)

How do you represent a signal in the frequency domain in MATLAB?

Use fft to observe the frequency content of the signal. NFFT = length(y); Y = fft(y,NFFT); F = ((0:1/NFFT:1-1/NFFT)*Fs). '; The output of the FFT is a complex vector containing information about the frequency content of the signal.

How to plot FFT output in MATLAB?

Y = fft(X); Compute the single-sided amplitude spectrum of the signal. f = Fs*(0:(L-1)/2)/L; P2 = abs(Y/L); P1 = P2(1:(L+1)/2); P1(2:end) = 2*P1(2:end); In the frequency domain, plot the single-sided spectrum.