A new SLM OFDM scheme with low complexity for PAPR reduction

Dae Woon Lim, Jong Seon No, Chi Woo Lim, Habong Chung

Research output: Contribution to journalArticlepeer-review

184 Scopus citations

Abstract

In this letter, the authors introduce a new selected mapping (SLM) orthogonal frequency division multiplexing (OFDM) scheme with low computational complexity. The proposed SLM scheme transforms an input symbol sequence into a set of OFDM signals by multiplying the phase sequences to the signal after a certain intermediate stage of inverse fast Fourier transform (IFFT). Then, the OFDM signal with the lowest peak-to-average power ratio (PAPR) is selected for transmission. The new SLM OFDM scheme reduces the computational complexity, while it shows almost the same performance of PAPR reduction as that of the conventional SLM OFDM scheme.

Original languageEnglish
Pages (from-to)93-96
Number of pages4
JournalIEEE Signal Processing Letters
Volume12
Issue number2
DOIs
StatePublished - Feb 2005

Keywords

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

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