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Abstract
This paper studies the problem of optimal use of a relay for reducing the transmission time of data packets from a source to a destination using network coding. More importantly, we address an effect that is typically overlooked in previous studies: the presence of active transmitting nodes in the neighborhood of such devices, which is typical in wireless mesh networks. We show that in systems with a fair medium access control mechanism (MAC), the use of a relay in a crowded medium brings forth considerable and unforeseen improvements, including up to 3.5x gains in terms of throughput compared to using only the direct link in some of our examples, and a considerable extension of the operating region where using a relay is beneficial. The problem is formulated as a Markov Decision Process (MDP) and numerical results are provided comparing simple, close–to–optimal heuristics to the optimal scheme.
Original language | English |
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Title of host publication | Communications (ICC), 2014 IEEE International Conference on |
Publisher | IEEE Communications Society |
Publication date | 2014 |
Pages | 1928 - 1933 |
ISBN (Print) | 9781479946402 |
DOIs | |
Publication status | Published - 2014 |
Event | 2014 IEEE International Conference on Communications - Sydney , Australia Duration: 10 Jun 2014 → 14 Jun 2014 Conference number: 31675 |
Conference
Conference | 2014 IEEE International Conference on Communications |
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Number | 31675 |
Country/Territory | Australia |
City | Sydney |
Period | 10/06/2014 → 14/06/2014 |
Series | IEEE International Conference on Communications |
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ISSN | 1938-1883 |
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