This is my discrete time periodic signal, the time resolution of the samples is 0.2ms.
And it's periodic after each 11 samples. So the fundamental period of the signal is 2ms or the fundamental frequency of this sequence is 500Hz. The amplitude of each pulse increases from -5V with unit step to +5V.
But I want to find its frequency (which is 500 Hz) by calculating its FFT and plot of FFT spectrum. Please help me. Thank you.