Analytical Markov model for slotted ALOHA with opportunistic RF energy harvesting

İbrahim, Abdelrahman M. and Erçetin, Özgür and Elbatt, Tamer (2015) Analytical Markov model for slotted ALOHA with opportunistic RF energy harvesting. In: IEEE International Conference on Communication Workshop (ICCW 2015), London, UK

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In this paper, we investigate the performance of an ALOHA random access wireless network consisting of nodes with and without RF energy harvesting capability. We develop and analyze a Markov model for the system when nodes with RF energy harvesting capability are infinitely backlogged. Our results indicate that the network throughput is improved when the conventional nodes are underloaded. On the contrary, when all types of nodes have finite backlogs, we numerically demonstrate that the network throughput and delay are improved when the overall system is overloaded. We show that there exists a trade-off between energy efficiency and delay, and we determine the optimal number of energy harvesting nodes in a network maximizing the energy efficiency while satisfying a given delay requirement.
Item Type: Papers in Conference Proceedings
Uncontrolled Keywords: Markov chain; Slotted Aloha; Wireless networks; opportunistic energy harvesting
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Electronics
Faculty of Engineering and Natural Sciences
Depositing User: Özgür Erçetin
Date Deposited: 29 Nov 2015 21:11
Last Modified: 26 Apr 2022 09:19

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