A new SLM OFDM scheme with low complexity for PAPR reduction

Author

Dae-Woon Lim ; Jong-Seon No ; Chi-Woo Lim ; Habong Chung

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea

Volume

12

Issue

2

fYear

2005

Firstpage

93

Lastpage

96

Abstract

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.

Keywords

OFDM modulation; computational complexity; fast Fourier transforms; mobile radio; sequences; IFFT; PAPR reduction; SLM OFDM scheme; computational complexity; inverse fast Fourier transform; peak-to-average power ratio; selected mapping orthogonal frequency division multiplexing; symbol-phase sequences; Bit error rate; Communication standards; Computational complexity; Fast Fourier transforms; Frequency division multiplexing; Land mobile radio; Nonlinear distortion; OFDM; Partial transmit sequences; Peak to average power ratio; Orthogonal frequency division multiplexing (OFDM); peak-to-average power ratio (PAPR); selected mapping (SLM);

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2004.840915

Filename

1381458