Adaptive peak windowing for crest factor reduction in a...

Details Adaptive peak windowing for crest factor reduction in a... Adaptive peak windowing for crest factor reduction in a...

2005-01-31

2009-12-15

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S260000, C375S262000, C375S267000, C375S296000, C375S284000, C370S208000, C370S252000, C370S350000, C370S522000, C455S126000, C455S450000, C455S522000, C709S248000, C714S712000, C714S746000

Reexamination Certificate

active

07634024

ABSTRACT:
In a communication system transmitter, a baseband processor is configured for coupling via an upconverter to an input of a power amplifier of the transmitter. The baseband processor comprises a crest factor reduction element implementing an adaptive peak windowing algorithm for application to an input signal, the adaptive peak windowing algorithm comprising a function that is adaptively adjustable for reducing interference among different peaks of the input signal.

REFERENCES:
patent: 6741661 (2004-05-01), Wheatley et al.
patent: 7013161 (2006-03-01), Morris
patent: 7336724 (2008-02-01), Jaenecke et al.
patent: 7362819 (2008-04-01), Obernosterer et al.
patent: 7382835 (2008-06-01), Anvari
patent: 2004/0052314 (2004-03-01), Copeland
O. Vaananen et al., “Effect of Clipping in Wideband CDMA System and Simple Algorithm for Peak Windowing,” World Wireless Congress, pp. 614-619, 2001.

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