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Partial Selective Mapping OFDM with Low Complexity IFFTs

Selective mapping (SLM) is a distortionless technique for reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal. However, it has a relatively high computational complexity due to the computation of multiple inverse fast Fourier transforms (IFF...

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Published in:	IEEE communications letters 2008-01, Vol.12 (1), p.4-6
Main Authors:	Ghassemi, A., Gulliver, T.A.
Format:	Article
Language:	English
Subjects:	Applied sciences Complexity Computation Computational complexity Discrete Fourier transforms Distortion Exact sciences and technology Fast Fourier transforms Fourier transforms Frequency division multiplexing Information, signal and communications theory Inverse Mapping Multiplexing OFDM Orthogonal Frequency Division Multiplexing Peak to average power ratio Reduction Signal and communications theory Signal mapping Telecommunications and information theory Time domain analysis Wireless communication
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description	Selective mapping (SLM) is a distortionless technique for reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal. However, it has a relatively high computational complexity due to the computation of multiple inverse fast Fourier transforms (IFFTs). In this letter, we present a new technique for reducing this complexity which is based on multiplying the phase sequences with a subset of the intermediate IFFT signals. This new technique significantly decreases the computational complexity while providing comparable PAPR reduction to original SLM (O-SLM).
doi_str_mv	10.1109/LCOMM.2008.071397
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subjects	Applied sciences Complexity Computation Computational complexity Discrete Fourier transforms Distortion Exact sciences and technology Fast Fourier transforms Fourier transforms Frequency division multiplexing Information, signal and communications theory Inverse Mapping Multiplexing OFDM Orthogonal Frequency Division Multiplexing Peak to average power ratio Reduction Signal and communications theory Signal mapping Telecommunications and information theory Time domain analysis Wireless communication
title	Partial Selective Mapping OFDM with Low Complexity IFFTs
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