Composite crest factor reduction

Details Composite crest factor reduction Composite crest factor reduction

2011-07-19

2011-07-19

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S295000, C375S254000, C375S278000, C375S284000, C375S285000, C398S193000, C455S091000, C455S114200, C455S114300

Reexamination Certificate

active

07983358

ABSTRACT:
Systems and methods are provided for providing a hybrid signal having a reduced crest factor. A digital signal is generated that assumes one of a plurality of vector states at discrete sampling times, with each of the plurality of vector states having an associated phase. An analog signal is monitored to determine when a phase of the analog signal is aligned with the phase of a vector state assumed by the digital signal. A crest factor reduction is applied to the digital signal if the digital signal assumes a vector state having an associated phase aligned with the phase of the analog signal to provide a compressed digital signal. The compressed digital signal and the analog signal are combined to provide the hybrid signal. The analog signal is not altered prior to being combined with the compressed digital signal.

REFERENCES:
patent: 6125103 (2000-09-01), Bauml et al.
patent: 6198778 (2001-03-01), Mestdagh
patent: 6430227 (2002-08-01), Kroeger et al.
patent: 6512797 (2003-01-01), Tellado et al.
patent: 6529925 (2003-03-01), Schenk
patent: 7085330 (2006-08-01), Shirali
patent: 2004/0052314 (2004-03-01), Copeland
patent: 2004/0156442 (2004-08-01), Clausen
patent: 2005/0169411 (2005-08-01), Kroeger
Ryu et al. Papr Reduction Using Soft Clipping and AI Rejection in OFDM Systems; Consumer Electronics, IEEE Transactions on; Publication Date: Feb. 2002; vol. 48, Issue 1; pp. 17-22.

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