Method and apparatus for reducing peak to average power ratio in

Details Method and apparatus for reducing peak to average power ratio in Method and apparatus for reducing peak to average power ratio in

1999-08-24

2000-10-03

Vo, Don N.

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

H04K 110, H04L 2728

Patent

active

061283509

ABSTRACT:
This invention provides a method for reducing peak to average power ratio in a radio frequency signal. The method comprises the steps of modulating a plurality of sub-carriers with a plurality of data symbol vectors to produce a first modulated signal; limiting the magnitude of the first modulated signal to produce a first limited modulated signal; demodulating the first limited modulated signal to recover the constellation points; predistorting the data symbol vectors to provide a minimum magnitude for in-phase and quadrature components thereof to produce predistorted data symbol vectors; modulating the plurality of carriers with the predistorted data symbol vectors to produce a second modulated signal; limiting the magnitude the second modulated signal to produce a second limited modulated signal; and reducing intermodulation products in the second limited modulated signal. Transmitters that perform the method are also included.

REFERENCES:
patent: 4370622 (1983-01-01), Hornbeck et al.
patent: 5101172 (1992-03-01), Ikeda et al.
patent: 5201071 (1993-04-01), Webb
patent: 5300894 (1994-04-01), Myer et al.
patent: 5302914 (1994-04-01), Arntz et al.
patent: 5349300 (1994-09-01), Matz et al.
patent: 5381449 (1995-01-01), Jasper et al.
patent: 5450043 (1995-09-01), Tanaka et al.
patent: 5598436 (1997-01-01), Drajal et al.
patent: 5606578 (1997-02-01), O'Dea
patent: 5621762 (1997-04-01), Miller et al.
patent: 5636247 (1997-06-01), Kamerman et al.
patent: 5696794 (1997-12-01), O'Dea
patent: 5710990 (1998-01-01), Long et al.
patent: 5727026 (1998-03-01), Beukema
patent: 5796784 (1998-08-01), LoGalbo et al.
patent: 5815532 (1998-09-01), Bhattacharya et al.
patent: 5835536 (1998-11-01), May et al.
patent: 5838732 (1998-11-01), Carney
patent: 5949796 (1999-09-01), Kumar
patent: 5970053 (1999-10-01), Schick et al.
patent: 6038261 (2000-03-01), Mestdagh
patent: 6049707 (2000-04-01), Buer et al.

Affiliated with

Also associated with

Rating

Method and apparatus for reducing peak to average power ratio in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing peak to average power ratio in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing peak to average power ratio in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-202656