Preamble generator for a multiband OFDM transceiver

Details Preamble generator for a multiband OFDM transceiver Preamble generator for a multiband OFDM transceiver

2004-09-30

2008-08-12

Ngo, Ricky (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C375S260000

Reexamination Certificate

active

07411898

ABSTRACT:
Preamble generator for a multiband frequency division multplexing (OFDM) tranceiver of a wireless personal area network (WPAN) being switchable between a time frequency interleaving (TFI)-mode wherein data packets are transmitted by said transceiver in different frequency bands according to a predetermined frequency hopping pattern and a fixed frequency interleaving (FFI) mode wherein data packets are transmitted by the transceiver in at least one fixed frequency band, wherein said preamble generator scrambles in the fixed frequency interleaving (FFI) mode a predetermined preamble of the data packets by multiplying said preamble with a pseudo random data sequence to flatten a power spectrum of said preamble.

REFERENCES:
patent: 7248659 (2007-07-01), Roberts
patent: 7257151 (2007-08-01), Batra et al.
patent: 2005/0232342 (2005-10-01), Batra et al.
patent: 2006/0182063 (2006-08-01), Ma et al.

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