Power Signal Confusion

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Anthony Quah

Joined Dec 1, 2007
80
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
 

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Mark44

Joined Nov 26, 2007
628
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
 
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