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2018 IEEE 19th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) (2018)
Chania, Greece
June 12, 2018 to June 15, 2018
ISBN: 978-1-5386-4726-4
pp: 1-11
Bernhard Grobwindhager , Graz University of Technology, Faculty of Electrical and Information Engineering, Austria
Carlo Alberto Boano , Graz University of Technology, Faculty of Electrical and Information Engineering, Austria
Michael Rath , Graz University of Technology, Faculty of Electrical and Information Engineering, Austria
Kay Romer , Graz University of Technology, Faculty of Electrical and Information Engineering, Austria
ABSTRACT
Ultra-wideband (UWB) technology is increasingly used to build location-aware IoT applications because of its outstanding positioning accuracy. Its communication performance, however, is unexplored and strongly affected by the chosen physical layer settings as well as by the surrounding environment. Finding an effective way to increase the dependability of UWB communications is yet an open problem. In this paper, we study the performance of different UWB physical layer settings and use them as tuning knobs to increase the energy efficiency and robustness of communications. Towards this goal, we first experimentally quantify the reliability and energy cost of each setting, in order to understand which physical layer configuration to privilege depending on the application requirements. We then use the estimated channel impulse response-a unique feature of UWB transceivers-to accurately measure the link quality and to extract relevant information about the characteristics of the surrounding environment, such as the presence of destructive interference. Capitalizing on this information, we design a scheme that adapts the UWB physical layer settings at runtime. An experimental evaluation using the Decawave DW1000 radio shows the effectiveness of the proposed adaptive scheme, highlighting the increased communication robustness and energy efficiency.
INDEX TERMS
Robustness, Physical layer, Transceivers, Payloads, Ultra wideband communication, Narrowband
CITATION

B. Grobwindhager, C. Alberto Boano, M. Rath and K. Romer, "Enabling Runtime Adaptation of Physical Layer Settings for Dependable UWB Communications," 2018 IEEE 19th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM)(WOWMOM), Chania, Greece, 2018, pp. 1-11.
doi:10.1109/WoWMoM.2018.8449776
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