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  • Research Article
  • Open Access

Power Efficiency Improvements through Peak-to-Average Power Ratio Reduction and Power Amplifier Linearization

EURASIP Journal on Advances in Signal Processing20072007:020463

https://doi.org/10.1155/2007/20463

  • Received: 9 June 2005
  • Accepted: 24 November 2006
  • Published:

Abstract

Many modern communication signal formats, such as orthogonal frequency-division multiplexing (OFDM) and code-division multiple access (CDMA), have high peak-to-average power ratios (PARs). A signal with a high PAR not only is vulnerable in the presence of nonlinear components such as power amplifiers (PAs), but also leads to low transmission power efficiency. Selected mapping (SLM) and clipping are well-known PAR reduction techniques. We propose to combine SLM with threshold clipping and digital baseband predistortion to improve the overall efficiency of the transmission system. Testbed experiments demonstrate the effectiveness of the proposed approach.

Keywords

  • Power Amplifier
  • Ratio Reduction
  • Power Ratio
  • Power Efficiency
  • Nonlinear Component

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Authors’ Affiliations

(1)
Freescale Semiconductor, Inc., Austin, TX 78729, USA
(2)
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
(3)
Marvell Semiconductor, Inc., Santa Clara, CA 95054, USA

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Copyright

© Ning Chen et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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