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dc.contributor.author Park, Kyung-Joon ko
dc.contributor.author Choi, Jihyuk ko
dc.contributor.author Hou, Jennifer C. ko
dc.contributor.author Hu, Yih-Chun ko
dc.contributor.author Lim, Hyuk ko
dc.date.accessioned 2018-06-01T03:58:58Z -
dc.date.available 2018-06-01T03:58:58Z -
dc.date.created 2018-03-29 -
dc.date.issued 2011-01 -
dc.identifier.citation Ad Hoc Networks, v.9, no.1, pp.16 - 27 -
dc.identifier.issn 1570-8705 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/6495 -
dc.description.abstract We investigate the problem of maximizing Medium Access Control (MAC) throughput in Carrier Sense Multiple Access (CSMA) wireless networks. By explicitly incorporating the carrier sense threshold and the transmit power into our analysis, we derive an analytical relation between MAC throughput and system parameters. In homogeneous networks, we derive the optimal carrier sense range at a given node density as a function of the ratio between the transmit power and the carrier sense threshold. The obtained optimal carrier sense range is smaller than that for covering the entire interference range, which is in sharp contrast to what has been considered to be optimal in previous studies. Only when the node density goes to infinity, the optimal carrier sense range converges to that for exactly covering the interference range, thereby eliminating all the hidden nodes. For nonhomogeneous networks, any distributed algorithm for tuning the carrier sense threshold, in which each node tries to maximize its own throughput without coordination, may significantly degrade MAC throughput. In order to properly design a distributed algorithm, each node not only considers its own throughput, but also needs to take account of its adverse impact on others. Our analysis is verified by simulation studies under various network scenarios. © 2010 Elsevier B.V. All rights reserved. -
dc.language English -
dc.publisher Elsevier BV -
dc.subject Carrier Sense Multiple Access -
dc.subject Spatial reuse -
dc.subject Hidden node problem -
dc.subject Exposed node problem -
dc.title Optimal physical carrier sense in wireless networks -
dc.type Article -
dc.identifier.doi 10.1016/j.adhoc.2010.04.006 -
dc.identifier.wosid 000282206400002 -
dc.identifier.scopusid 2-s2.0-77955852141 -
dc.type.local Article(Overseas) -
dc.type.rims ART -
dc.description.journalClass 1 -
dc.contributor.nonIdAuthor Choi, Jihyuk -
dc.contributor.nonIdAuthor Hou, Jennifer C. -
dc.contributor.nonIdAuthor Hu, Yih-Chun -
dc.contributor.nonIdAuthor Lim, Hyuk -
dc.identifier.citationVolume 9 -
dc.identifier.citationNumber 1 -
dc.identifier.citationStartPage 16 -
dc.identifier.citationEndPage 27 -
dc.identifier.citationTitle Ad Hoc Networks -
dc.type.journalArticle Article -
dc.description.isOpenAccess N -
dc.contributor.affiliatedAuthor Park, Kyung-Joon -
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Department of Electrical Engineering and Computer Science CSI(Cyber-Physical Systems Integration) Lab 1. Journal Articles

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