Low-complexity PAPR reduction technique for OFDM systems using modified widely linear SLM scheme

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)1006-1010
Journal / PublicationAEU - International Journal of Electronics and Communications
Volume66
Issue number12
Publication statusPublished - Dec 2012

Abstract

In this paper, a modified widely linear selective mapping (MWL-SLM) scheme is proposed to reduce the peak-to-average power ratio (PAPR) of the orthogonal frequency-division multiplexing (OFDM) systems. In the proposed MWL-SLM scheme, through partition one complex signals into two real signals and combining the linear properties of the Fourier Transform, at most 4M 2 candidate signals can be obtained but only require M inverse fast Fourier transform (IFFT) operations. As a result, the proposed SLM scheme has the ability to generate more candidates when compared with conventional SLM (C-SLM) and widely linear SLM (WL-SLM). Therefore, MWL-SLM outperforms C-SLM and WL-SLM for the same computational cost of IFFT operations. Alternatively, for a given number of candidates, MWL-SLM has slightly inferior PAPR reduction performance to C-SLM and WL-SLM but requires less IFFT operations to be implemented, thus resulting in a lower computational complexity. Simulation results demonstrate the effectiveness of the proposed scheme. © 2012 Elsevier GmbH. All rights reserved.

Research Area(s)

  • Computational complexity, Orthogonal frequency division multiplexing (OFDM), Peak-to-average power ratio (PAPR), Selected mapping (SLM)

Citation Format(s)

Low-complexity PAPR reduction technique for OFDM systems using modified widely linear SLM scheme. / Yang, L.; Siu, Y. M.; Soo, K. K.; Leung, S. W.; Li, S. Q.

In: AEU - International Journal of Electronics and Communications, Vol. 66, No. 12, 12.2012, p. 1006-1010.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review