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On-Off Frequency-Shift Keying for Wideband Fading Channels

EURASIP Journal on Wireless Communications and Networking volume 2006, Article number: 098564 (2006) Cite this article

Abstract

-ary on-off frequency-shift keying (OOFSK) is a digital modulation format in which-ary FSK signaling is overlaid on on/off keying. This paper investigates the potential of this modulation format in the context of wideband fading channels. First, it is assumed that the receiver uses energy detection for the reception of OOFSK signals. Capacity expressions are obtained for the cases in which the receiver has perfect and imperfect fading side information. Power efficiency is investigated when the transmitter is subject to a peak-to-average power ratio (PAR) limitation or a peak power limitation. It is shown that under a PAR limitation, it is extremely power inefficient to operate in the very-low-SNR regime. On the other hand, if there is only a peak power limitation, it is demonstrated that power efficiency improves as one operates with smaller SNR and vanishing duty factor. Also studied are the capacity improvements that accrue when the receiver can track phase shifts in the channel or if the received signal has a specular component. To take advantage of those features, the phase of the modulation is also allowed to carry information.

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Authors and Affiliations

  1. Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA

    Mustafa Cenk Gursoy, H. Vincent Poor & Sergio Verdú

  2. Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA

    Mustafa Cenk Gursoy

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  1. Mustafa Cenk Gursoy
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  2. H. Vincent Poor
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  3. Sergio Verdú
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Correspondence to Mustafa Cenk Gursoy.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Gursoy, M.C., Poor, H.V. & Verdú, S. On-Off Frequency-Shift Keying for Wideband Fading Channels. J Wireless Com Network 2006, 098564 (2006). https://doi.org/10.1155/WCN/2006/98564

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  • DOI: https://doi.org/10.1155/WCN/2006/98564

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