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Need help Digital signals. Energy and power

  1. Feb 27, 2009 #1
    Need help!!! Digital signals. Energy and power

    1. The problem statement, all variables and given/known data

    ∑ (3)^2n
    n=0

    FInd the energy of the signal
    Find the power of the signal



    3. The attempt at a solution

    Energy: (3)2n = 32+34+36+...=9+81+...= ∞
    N
    Power: lim (1/(2N+1)) * ∑ |x(n)^2 |
    N→∞ N=-n
     
  2. jcsd
  3. Feb 27, 2009 #2
    Re: Need help!!! Digital signals. Energy and power

    N→∞ N=-n and N are supposed to be below and on top of the "sum"
     
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