Apparatus and method for reducing the peak-to-average power...

Details Apparatus and method for reducing the peak-to-average power... Apparatus and method for reducing the peak-to-average power...

2007-05-29

2007-05-29

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S295000

Reexamination Certificate

active

11285780

ABSTRACT:
An apparatus is provided for reducing the peak-to-average power ratio (PAPR) of a multicarrier transmission system. The apparatus comprises a detector for receiving a plurality of symbols to be transmitted and determining a peak amplitude of the plurality of symbols and a controller for determining if the peak amplitude associated with the plurality of symbols exceeds a predetermined threshold. If the peak amplitude exceeds the predetermined threshold, the apparatus generates at least one correction carrier signal. The at least one correction carrier signal is combined with a plurality of modulated carrier signals associated with the plurality of symbols to thereby reduce a peak-to-average power ratio associated with the plurality of modulated carrier signals.

REFERENCES:
patent: 6130918 (2000-10-01), Humphrey et al.
patent: 6952394 (2005-10-01), Kim et al.
patent: 2003/0086363 (2003-05-01), Hernandez

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