Methods and apparatus for use in reducing residual phase...

Details Methods and apparatus for use in reducing residual phase... Methods and apparatus for use in reducing residual phase...

2005-08-09

2005-08-09

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S148000, C375S267000, C375S347000, C370S464000

Reexamination Certificate

active

06928120

ABSTRACT:
Methods and apparatus for use in reducing residual phase error (RPE) in orthogonal frequency division multiplexed (OFDM) communication signals are described. One method includes the steps of calculating a phase of each one of a plurality of channel-compensated data symbols to generate a plurality of data symbol phases; performing a hard-decision on each one of the plurality of channel-compensated data symbols to estimate a plurality of information symbols; calculating a phase of each one of the plurality of information symbols to generate a plurality of information symbol phases; calculating a phase difference between each data symbol phase and its associated information symbol phase to generate a plurality of phase differences; and determining a residual phase error based on the plurality of phase differences.

REFERENCES:
patent: 5017883 (1991-05-01), Divsalar et al.
patent: 5140615 (1992-08-01), Jasper et al.
patent: 5369670 (1994-11-01), Zagloul et al.
patent: 5471464 (1995-11-01), Ikeda
patent: 5712877 (1998-01-01), Ho et al.
patent: 5787123 (1998-07-01), Okada et al.
patent: 5796786 (1998-08-01), Lee
patent: 5809083 (1998-09-01), Wright
patent: 6496534 (2002-12-01), Shimizu et al.
patent: 0 859 494 (1998-08-01), None
patent: 1133093 (2001-12-01), None
patent: 2 721 778 (1995-12-01), None
Written Opinion, for PCT/US01/26621, dated Feb. 25, 2003.
ISR for PCT/US01/26621 (3 pages).

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