Wimax

Hindawi Publishing Corporation
EURASIP Journal on Wireless Communications and Networking
Volume 2010, Article ID 414927, 14 pages doi:10.1155/2010/414927 Research Article
On the Evaluation of MB-OFDM UWB Interference Effects on a WiMAX Receiver
Eduardo Cano, Alberto Rabbachin, Detlef Fuehrer, and Joaquim Fortuny
Institute for the Protection and Security of the Citizen, Joint Research Centre, European Commission, Ispra, 21027 Varese, Italy
Correspondence should be addressed to Eduardo Cano, [e-mail]
Received 1 November 2009; Revised 20 April 2010; Accepted 6 July 2010
Academic Editor: Yan Xin
Copyright © 2010 Eduardo Cano et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The European Commission has recently adopted specific power spectral density masks for ultra wideband (UWB) devices, with detect and avoid capabilities, for coexistence with licensed standards. Under these regulations, a novel approach for analyzing the
UWB interference effects on the WiMAX downlink is provided in this paper by means of a novel theoretical computation of the bit error rate (BER), simulation results, and measurements in a conducted modality. New analytical BER expressions for both uncoded and coded WiMAX systems, impaired by a single multiband-OFDM (MB-OFDM) UWB interference signal, are obtained in this paper for a Rayleigh fading channel. The BER is expressed in terms of the characteristic function of the interference signal. The maximum permissible interference levels and the signal-to-interference (SIR) values, which allow the UWB interference effects to be considered negligible, are estimated in this paper from simulation and measurement results. The analysis considers a WiMAX receiver operating at its minimum sensitivity level. The BER, the symbol error probability