Interleaver, deinterleaver, interleaving method, and deinterleaving method for OFDM data
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United States of America Patent
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Jan 30, 2007
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N/A
app pub date -
Mar 8, 2002
filing date -
Mar 19, 2001
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Abstract
An interleaver and interleaving method each includes two stages, and is useful in coded orthogonal frequency division multiplexed (COFDM) wireless local area networks. A first stage performs a first block permutation and a second stage performs bit order permutation to effectuate a second group permutation. A corresponding de-interleaver does just the opposite at the receiver. A double-buffer version includes writing data into one memory block in a first order while reading data from the second block in a second order, with the first and second orders selected to effectuate the first block permutation.
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