Peak-to-average power ratio reduction with threshold limited...

Details Peak-to-average power ratio reduction with threshold limited... Peak-to-average power ratio reduction with threshold limited...

2006-09-28

2010-02-09

Corrielus, Jean B (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S295000, C370S206000

Reexamination Certificate

active

07660360

ABSTRACT:
Disclosed is a coded orthogonal frequency-division multiplexing (OFDM) system and method for reducing a peak-to-average power ratio (PAPR). The system and method include a modulator configured to modulate (e.g., using quadrature amplitude modulation (QAM)) coded bits into symbols. The system and method also include an inverse discrete fourier transform (IDFT) module to perform an IDFT on the symbols to produce an OFDM signal. The system and method measure the PAPR of the OFDM signal and transmit the signal to a receiver if the PAPR of the signal is less than a threshold PAPR.

REFERENCES:
patent: 6950389 (2005-09-01), Weerackody
patent: 2002/0150036 (2002-10-01), Weerackody
patent: 2004/0136314 (2004-07-01), Jung et al.
patent: 2006/0098747 (2006-05-01), Yue et al.
R. J. Baxley, et al., “Ordered Phase Sequence Testing in SLM for Improved Blind Detection”, Proc. of IEEE Workshop on Sig. Proc. Advances in Wireless Commun. (SPAWC), New York, NY, Jun. 2005.
“Overview of PAPR Reduction Coding Techniques for OFDM”, Downloaded from www.ece.utexas.edu/wncg/ee381v/student—report/par—zuniga.doc on Sep. 27, 2006.
T.T. Nguyen, et al., “On Partial Transmit Sequences for PAR Reduction in OFDM Systems”, Downloaded from www.ece.ubc.ca/˜lampe/Preprints/PAR.pdf on Sep. 27, 2006.

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