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 proceedingConference 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 languageEnglish (US)
Title of host publicationConference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems and Computers
Pages1476-1479
Number of pages4
StatePublished - Dec 1 2005
Event39th Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States
Duration: Oct 28 2005Nov 1 2005

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2005
ISSN (Print)1058-6393

Other

Other39th Asilomar Conference on Signals, Systems and Computers
CountryUnited States
CityPacific Grove, CA
Period10/28/0511/1/05

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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  • Cite this

    Krongold, B. S., Woo, G. R., & Jones, D. L. (2005). Fast active constellation extension for MIMO-OFDM PAR reduction. In Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems and Computers (pp. 1476-1479). [1600011] (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2005).