Interleaver, deinterleaver, interleaving method, and...

Details Interleaver, deinterleaver, interleaving method, and... Interleaver, deinterleaver, interleaving method, and...

2007-01-30

2007-01-30

Nguyen, Chau (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S210000

Reexamination Certificate

active

10096498

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.

REFERENCES:
patent: 5537398 (1996-07-01), Siwiak
patent: 5694389 (1997-12-01), Seki et al.
patent: 6278685 (2001-08-01), Yonge, III et al.

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