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Erschienen in: Wireless Personal Communications 1/2017

25.04.2017

Transforming the Statistical Distribution of Wireless OFDM Signal for PAPR Reduction

verfasst von: Yong Wang, Li-hua Wang

Erschienen in: Wireless Personal Communications | Ausgabe 1/2017

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Abstract

To reduce the high peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signal, a novel nonlinear companding transform (CT) scheme is proposed in this paper. This scheme can reallocate both the amplitude/power as well as statistical distribution of the companded signal more reasonably and flexibly than existing CT methods with low computational complexity. By choosing an appropriate companding parameter, it can provide more effective PAPR reduction but at the price of a minimal amount of bit-error-rate (BER) performance degradation caused by the companding distortion. The closed-form expressions including the achievable PAPR gain, signal attenuation factor, and corresponding selection criteria for the companding parameter were derived. Computer simulations demonstrate that the scheme significantly improves the overall performances of OFDM system in terms of PAPR, BER and bandwidth efficiency under the multipath fading channel or with the high power amplifier.

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Metadaten
Titel
Transforming the Statistical Distribution of Wireless OFDM Signal for PAPR Reduction
verfasst von
Yong Wang
Li-hua Wang
Publikationsdatum
25.04.2017
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 1/2017
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-017-4199-y

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