## Saturday, November 14, 2009

### Energy and Power Signals

x(t) (or x[n]) is said to be an energy signal (or sequence) if and only if 0 < E < infinity, and

so P = 0.

x(t) (or x[n]) is said to be a power signal (or sequence) if and only if 0 < P < infinity, thus

implying that E = infinity.

Signals that satisfy neither property are referred to as neither energy signals nor power

signals.

Note that a periodic signal is a power signal if its energy content per period is finite, and

then the average power of this signal need only be calculated over a period

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if energy is infinity and power is zero,then what is this signal power,energy or neither

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