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Cyclic prefix in OFDM causes cyclic convolution

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12-01-2005, 01:50 AM

Ant_Magma

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Cyclic prefix in OFDM causes cyclic convolution

I read everywhere saying that by adding cyclic prefix in a OFDM symbol
creates cyclic convolution with the channel. But they don't say why we
want cyclic convolution. Does anybody know why?

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