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Performance Evaluation of an IEEE 802.15.4a Physical Layer with Energy Detection and Multi-User Interference
Citation key FMLZ-PEEDMI-07
Author Flury, Manuel and Merz, Ruben and Le Boudec, Jean-Yves and Zory, Julien
Title of Book IEEE International Conference on Ultra-Wideband (ICUWB 2007)
Pages 663–668
Year 2007
ISBN 978-1-4244-0521-3
DOI http://dx.doi.org/10.1109/ICUWB.2007.4381027
Location Singapore
Month September
Abstract We evaluate the performance of an IEEE 802.15.4a ultra-wide band (UWB) physical layer, with an energy-detection receiver, in the presence of multi-user interference (MUI). A complete packet based system is considered. We take into account packet detection and timing acquisition, the estimation of the power delay profile of the channel, and the recovery of the encoded payload. Energy detectors are known to have a low implementation complexity and to allow for avoiding the complex channel estimation needed by a Rake receiver. However, our results show that MUI severely degrades the performance of the energy detection receiver, even at low traffic rate. We demonstrate that using an IEEE 802.15.4a compliant energy detection receiver significantly diminishes one of the most appealing benefits of UWB, namely its robustness to MUI and thus the possibility to allow parallel transmissions. We further find that timing acquisition and data decoding both equally suffer from MUI.
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