2nd November 2019


Is unit step signal a power or energy signal?

Then the unit step becomes a periodic function. A periodic function has infinite duration, hence its energy will be infinity, and since the energy integral does not decrease over consecutive time intervals, it might seem that we cannot define power for the signal. So the unit step is also a power signal.

Then, what is the energy of signal?

Energy Signals: an energy signal is a signal with finite energy and zero average power ,while the Power Signals: a power signal is a signal with infinite energy but finite average power.

Is unit step signal periodic?

No Unit Step Funciton is aperiodic. But its unfair call unit step function periodic as it changes its value from 0 to 1 at t=0. So for calculations that demand the function to be periodic you may find it applicable for a specific time interval.
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