Performance of DS-UWB in MB-OFDM and multi-user interference over Nakagami-m fading channels

Authors:
Abolfazl Mehbodniya;Sonia Aïssa
Affiliations:
INRS-EMT, University of Quebec, Montreal, QC, Canada;INRS-EMT, University of Quebec, Montreal, QC, Canada and King Abdullah Univ. of Science and Technology (KAUST), Jeddah, Kingdom of Saudi Arabia
Venue:
Wireless Communications & Mobile Computing
Year:
2012

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Abstract

The mutual interference between the two ultra wideband (UWB) technologies, which use the same frequency spectrum, will be a matter of concern in the near future. In this context, we present a performance analysis of direct-sequence (DS) UWB communication in the presence of multiband orthogonal frequency division multiplexing (MB-OFDM) UWB interfering transmissions. The channel fading is modeled according to Nakagami-m distribution, and multi-user interference is taken into account. The DS-UWB system performance is evaluated in terms of bit error rate (BER). Specifically, using the characteristic function approach, an analytical expression for the average BER is derived conditioned on the channel impulse response. Numerical and simulation results are provided and compared for different coexistence scenarios. Copyright © 2011 John Wiley & Sons, Ltd.