System and method for scrambling the phase of the carriers...

Pulse or digital communications – Transceivers – Modems

Reexamination Certificate

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C375S219000

Reexamination Certificate

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11211535

ABSTRACT:
A system and method that scrambles the phase characteristic of a carrier signal are described. The scrambling of the phase characteristic of each carrier signal includes associating a value with each carrier signal and computing a phase shift for each carrier signal based on the value associated with that carrier signal. The value is determined independently of any input bit value carried by that carrier signal. The phase shift computed for each carrier signal is combined with the phase characteristic of that carrier signal so as to substantially scramble the phase characteristic of the carrier signals. Bits of an input signal are modulated onto the carrier signals having the substantially scrambled phase characteristic to produce a transmission signal with a reduced PAR.

REFERENCES:
patent: 3955141 (1976-05-01), Lyon et al.
patent: 4985900 (1991-01-01), Rhind et al.
patent: 5748677 (1998-05-01), Kumar
patent: 6256355 (2001-07-01), Sakoda et al.
patent: 6507585 (2003-01-01), Dobson
patent: 6590860 (2003-07-01), Sakoda et al.
patent: 6704317 (2004-03-01), Dobson
patent: 2005/0141410 (2005-06-01), Zhang et al.
patent: 2006/0092902 (2006-05-01), Schmidt
patent: 2006/0140288 (2006-06-01), Holden
patent: 0 584 534 (1994-03-01), None
patent: 0 719 004 (1996-06-01), None
patent: 2 330 491 (1999-04-01), None
patent: WO 98/32065 (1998-07-01), None
patent: WO 99/22463 (1999-05-01), None
patent: WO 99/29078 (1999-06-01), None
Bauml, R. W. et al., “Reducing the Peak-to-Average Power Ratio of Multicarrier Modulation By Selected Mapping”, Electronic Letters, GB, IEE Stevenage, vol. 32, No. 22, Oct. 24, 1996, pp. 2056-2057, XP000643915 ISSN: 0013-5194.
Annex to Form PCT/ISA/206 for PCT/US00/30958, Mar. 23, 2001.

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