Fast active constellation extension for MIMO-OFDM PAR reduction

Brian S. Krongold; Grace R. Woo; Douglas L. Jones

Fast active constellation extension for MIMO-OFDM PAR reduction

Brian S. Krongold, Grace R. Woo, Douglas L. Jones

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Orthogonal frequency-division multiplexed (OFDM) communication systems have become extremely popular in the last decade, and OFDM is often selected as the physical layer interface for emerging standards. A major drawback to OFDM is its inherently high peak-to-average power ratio (PAR), which can significantly reduce power efficiency and performance in multiple-input-multiple-output (MIMO) as well as single-input-single-output (SISO) systems. Active constellation extension (ACE) is a powerful technique for peak reduction in SISO systems. A MIMO extension was recently proposed, but lacked the computational efficiency for practical system implementation. This paper extends the efficient smart gradient project (SGP) technique for ACE to MIMO OFDM systems, and shows that it obtains sizeable PAR reduction with only two iterations.

Original language	English (US)
Title of host publication	Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems and Computers
Pages	1476-1479
Number of pages	4
State	Published - 2005
Externally published	Yes
Event	39th Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States Duration: Oct 28 2005 → Nov 1 2005

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
Volume	2005
ISSN (Print)	1058-6393

Other

Other	39th Asilomar Conference on Signals, Systems and Computers
Country/Territory	United States
City	Pacific Grove, CA
Period	10/28/05 → 11/1/05

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

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Fast active constellation extension for MIMO-OFDM PAR reduction. / Krongold, Brian S.; Woo, Grace R.; Jones, Douglas L.
Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems and Computers. 2005. p. 1476-1479 1600011 (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2005).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Krongold, BS, Woo, GR & Jones, DL 2005, Fast active constellation extension for MIMO-OFDM PAR reduction. in Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems and Computers., 1600011, Conference Record - Asilomar Conference on Signals, Systems and Computers, vol. 2005, pp. 1476-1479, 39th Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, United States, 10/28/05.

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Fast active constellation extension for MIMO-OFDM PAR reduction

Abstract

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ASJC Scopus subject areas

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