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Very challenging! Digital signal processing.

  • Thread starter cleopatra
  • Start date
1. Homework Statement

Signal x(n)= (1/sqrt(n)) * u(n)
1.Find the energy of the signal.
2.Is the energy finite or infinite?


2. Homework Equations

sum|x(n)|^2 = energy

3. The Attempt at a Solution
 
You are basically being asked to test the convergence of the series with term 1/n, n ranging from 1 to infinite.
 
I know, I just can´t calculate it out.
Can you please helpe me?

And how do I know if it´s finite or not?
 
It would be helpful if you could show your working

Also, does u(n) = unit step function with n as the parameter ?
 
Last edited:

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