Interleaving circuit for a multiband OFDM transceiver

Details Interleaving circuit for a multiband OFDM transceiver Interleaving circuit for a multiband OFDM transceiver

2008-05-20

2008-05-20

D'Agosta, Steve M. (Department: 2617)

Multiplex communications

Communication over free space

Combining or distributing information via frequency channels

C370S206000, C370S208000, C370S338000, C370S319000, C370S348000, C435S422000, C435S450000, C435S017000, C435S102000, C435S103000, C435S104000, C375S130000, C375S146000, C375S279000

Reexamination Certificate

active

10987191

ABSTRACT:
Interleaving circuit for a multiband OFDM (orthogonal frequency division multiplexing) transceiver of a ultra wide band wireless personal access network transmitting OFDM modulated symbols, wherein each OFDM symbol consists of a predetermined number (NCBPS) of encoded bits,said interleaving circuit comprisinga symbol interleaving unit which receives an input bitstream of encoded bits and permutes adjacent bits of said input bitstream across different OFDM symbols;an intra-symbol tone interleaving unit which receives the bits permuted by said symbol interleaving unit and permutes adjacent bits of each OFDM symbol across uncorrelated data sub-carriers; andan intra-symbol cyclic shift unit which shifts cyclically NCBPSbits of each OFDM symbol in response to a shift value (K) which is changed between adjacent OFDM symbols.

REFERENCES:
patent: 6108369 (2000-08-01), Ovesjo et al.
patent: 2004/0178934 (2004-09-01), Balakrishnan et al.
patent: 2004/0218683 (2004-11-01), Batra et al.
patent: 2004/0228269 (2004-11-01), Balakrishnan et al.
patent: 2005/0078598 (2005-04-01), Batra et al.
patent: 1 170 917 (2002-01-01), None
Batra et al. “Multi-band OFDM physical Layer Proposal for IEEE 802.15 Task Group 3a.”IEEE P802.15 Wireless Personal Area Networks.Jun. 2007, pp. 1-69.

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