Abstract
Recent theoretical results show that it is optimal to allow interfering sources to transmit simultaneously, as long as they are outside a well-defined exclusion region around a destination, and to adapt the rate to interference. In contrast, interference from inside the exclusion region needs to be controlled. Based on these theoretical findings, we design a fully distributed rate-adaptive MAC protocol for ultra-wide band (UWB) where sources constantly adapt their channel code (and thus their rate) to the level of interference experienced at the destination. To mitigate the interference of sources inside the exclusion region, we propose a specific demodulation scheme that cancels most of the interfering energy. Through simulation we show that we achieve a significant increase in network throughput compared to traditional MAC proposals.
The work presented in this paper was supported (in part) by the National Competence Center in Research on Mobile Information and Communication Systems (NCCR-MICS), a center supported by the Swiss National Science Foundation under grant number 5005-67322
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Merz, R., Le Boudec, JY., Widmer, J., Radunović, B. (2004). A Rate-Adaptive MAC Protocol for Low-Power Ultra-Wide Band Ad-Hoc Networks. In: Nikolaidis, I., Barbeau, M., Kranakis, E. (eds) Ad-Hoc, Mobile, and Wireless Networks. ADHOC-NOW 2004. Lecture Notes in Computer Science, vol 3158. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-28634-9_25
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DOI: https://doi.org/10.1007/978-3-540-28634-9_25
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