PAPR reduction for beamforming OFDM via constellation-beam modification

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The high peak-to-average power ratio (PAPR) of orthogonal frequency multiplexing (OFDM) greatly reduces the transmitter power efficiency. We propose a method that yields significant and consistent PAPR reductions for all numbers of users (receivers) in a beamforming MISOOFDM system, such as WiMAX, by simultaneously exploiting the degrees of freedom in the constellation domain and in the null-space of the channel matrix. We also provide an efficient algorithm that is compatible with various constellation configurations in practical systems. With no sacrifice in data rate or channel efficiency, the proposed method achieves a maximum of 6.59 dB and a minimum of 2.11 dB PAPR reduction in an 8-antenna QPSK beamforming MISO-OFDM scenario.

Original languageEnglish (US)
Title of host publicationConference Record - 43rd Asilomar Conference on Signals, Systems and Computers
Pages1640-1643
Number of pages4
DOIs
StatePublished - Dec 1 2009
Event43rd Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States
Duration: Nov 1 2009Nov 4 2009

Publication series

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

Other

Other43rd Asilomar Conference on Signals, Systems and Computers
CountryUnited States
CityPacific Grove, CA
Period11/1/0911/4/09

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Keywords

  • MISO
  • OFDM
  • PAPR reduction

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Cite this

Xu, K., & Jones, D. L. (2009). PAPR reduction for beamforming OFDM via constellation-beam modification. In Conference Record - 43rd Asilomar Conference on Signals, Systems and Computers (pp. 1640-1643). [5470199] (Conference Record - Asilomar Conference on Signals, Systems and Computers). https://doi.org/10.1109/ACSSC.2009.5470199