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EURASIP Journal on Wireless Communications and Networking
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Interference Mitigation Technique for Coexistence of Pulse-Based UWB and OFDM

EURASIP Journal on Wireless Communications and Networking volume 2008, Article number: 285683 (2008) Cite this article

Abstract

Ultra-wideband (UWB) is a useful radio technique for sharing frequency bands between radio systems. It uses very short pulses to spread spectrum. However, there is a potential for interference between systems using the same frequency bands at close range. In some regulatory systems, interference detection and avoidance (DAA) techniques are required to prevent interference with existing radio systems. In this paper, the effect of interference on orthogonal frequency division multiplexing (OFDM) signals from pulse-based UWB is discussed, and an interference mitigation technique is proposed. This technique focuses on the pulse repetition cycle of UWB. The pulse repetition interval is set the same or half the period of the OFDM symbol excluding the guard interval to mitigate interference. These proposals are also made for direct sequence (DS)-UWB. Bit error rate (BER) performance is illustrated through both simulation and theoretical approximations.

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Authors and Affiliations

  1. Department of Electronics and Communications, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan

    Kohei Ohno & Tetsushi Ikegami

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  1. Kohei Ohno
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  2. Tetsushi Ikegami
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Correspondence to Kohei Ohno.

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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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Ohno, K., Ikegami, T. Interference Mitigation Technique for Coexistence of Pulse-Based UWB and OFDM. J Wireless Com Network 2008, 285683 (2008). https://doi.org/10.1155/2008/285683

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  • DOI: https://doi.org/10.1155/2008/285683

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