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Old 03-09-2006, 11:38 PM
Jerry Avins
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Default Re: cyclic prefix in OFDM and precursor ISI

Zeph80 wrote:
> Maybe I'm not framing my question right.Everywhere I read, they mention how
> the head of the symbol(first n samples) is affected due to previous symbols
> and so how discarding the CP solves that.(the distortion occurs only in
> head).What about the tail of the OFDM symbol,wont that be affected by the
> future symbols as much as the head would be by prevoius symbols.Why no
> guard interval at the end too?


"The evil that men do lives on after them ..." What has not yet happened
can do no harm. I.e., causality.

Jerry
--
Engineering is the art of making what you want from things you can get.
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