System and method for rapid generation of low PAR Q-mode...

Details System and method for rapid generation of low PAR Q-mode... System and method for rapid generation of low PAR Q-mode...

2011-02-15

2011-02-15

Vo, Don N (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S260000

Reexamination Certificate

active

07889779

ABSTRACT:
In a data communication system, a transmitter of an ADSL modem uses a PRBS generator to generate a plurality of ADSL signals. The transmitter computes the Peak to Average (e.g., root-mean-square) (“PAR”) ratio of each of the ADSL signals generated. The ADSL signal having the lowest PAR is determined, and the corresponding state of the PRBS generator is noted. The signal having the lowest PAR, or at least the corresponding state of the PRBS generator, is then used to generate a Q-mode signal.

REFERENCES:
patent: 7010028 (2006-03-01), Carlson
patent: 2002/0150036 (2002-10-01), Weerackody
patent: 2003/0039306 (2003-02-01), Redfern
patent: 0942566 (1999-09-01), None
patent: WO-00/52918 (2000-09-01), None
patent: WO-00/72543 (2000-11-01), None

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