Power Signal Confusion

Discussion in 'Homework Help' started by Anthony Quah, May 1, 2008.

  1. Anthony Quah

    Thread Starter Active Member

    Dec 1, 2007
    80
    0
    hi guy,

    I am studying Electroni Signal and System.. i am quite confuse about how to the powe signal formula actually apply.. i have attachment an example which i require someone to help me explain or give me another good example to help me on this... a big THANKS...


    Anthony
     
  2. Mark44

    Well-Known Member

    Nov 26, 2007
    626
    1
    The N + 1 term in the numerator comes from Sum(1^{2}, n = 0, n = N).
    Now 1^{2} = 1, and the summation is 1 + 1 + 1 + ... + 1, or (N + 1) terms that are all 1, so the value of the summation is N + 1. If that's confusing, pick a value for N and see what you get.

    Mark
     
  3. Caveman

    Active Member

    Apr 15, 2008
    471
    0
    It's the basic counting from zero thing. 1-10 has 10 counts, but 0-10 has 11.
     
  4. Anthony Quah

    Thread Starter Active Member

    Dec 1, 2007
    80
    0
    hmm..i will try to digest it...thanks guy..
     
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