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Reducing the peak-to-average power ratio of orthogonal frequency division multiplexing signal through bit or symbol interleaving

Jayalath, Dhammika & Tellambura, Chintha (2000) Reducing the peak-to-average power ratio of orthogonal frequency division multiplexing signal through bit or symbol interleaving. Electronics Letters, 36(13), pp. 1161-1163.

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Abstract

An interleaver-based technique for improving the peak-to-average power ratio (PAP) of an orthogonal frequency division multiplexing signal is presented. For this technique, K-1 random interleavers are used to produce (K-1) permuted sequences from the same information sequence. The PAPs of the permuted sequences and the original information sequence are then computed using K oversampled fast Fourier transforms (OFFTs). The sequence with the lowest PAP is chosen for transmission. Results show that for 256 subcarriers and quadrature phase shift keying data symbols, even with K=2, the 0.1% PAP is reduced by 1.3 dB and with K=4 it is reduced by 2 dB. The 0.1% PAP can be reduced by 3 dB and the 0.01% PAP by 4 dB at a cost of 16 OFFTs and a data rate loss of <0.8% with K=16.

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ID Code: 13743
Item Type: Journal Article
Keywords: OFDM, Peak Power Reduction, PAPR, Interleaving
DOI: 10.1049/el:20000822
ISSN: 0013-5194
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > COMMUNICATIONS TECHNOLOGIES (100500) > Communications Technologies not elsewhere classified (100599)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2000 IEEE
Copyright Statement: Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Deposited On: 12 Jun 2008
Last Modified: 11 Aug 2011 03:48

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