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Aidan Walton's Publications

Conditional Bit Error Rate for an Impulse Radio UWB Channel with Interfering Users
Citation key ML-CBERIRUWBCIU-05
Author Merz, Ruben and Le Boudec, Jean-Yves
Title of Book IEEE International Conference on Ultra-Wideband (ICU '05)
Pages 130–135
Year 2005
ISBN 0-7803-9397-X
DOI http://dx.doi.org/10.1109/ICU.2005.1569971
Location Zürich, Switzerland
Month September
Abstract We consider a multi-user impulse radio UWB physical layer in a multipath environment. We propose a fast and efficient method to compute the conditional bit error rate (BER), given some realizations of the channels from source/interferer to destination, and of delay differences. Our motivation is packet level simulation of large scale or dense impulse radio UWB networks. The conditional BER is used in a packet level simulator with block fading channel assumption to sample packet transmission error events. However, due to the timescale difference between physical layer events and network events, a pulse-level simulation of the BER in a realistic multipath channel environment is infeasible. Our solution is based on a novel combination of large deviation and importance sampling.
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