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dc.contributor.authorBrodsky, Micah Z. (Micah Zev)
dc.contributor.authorMorris, Robert Tappan
dc.date.accessioned2012-09-13T16:16:58Z
dc.date.available2012-09-13T16:16:58Z
dc.date.issued2009-08
dc.identifier.isbn978-1-60558-594-9
dc.identifier.urihttp://hdl.handle.net/1721.1/72692
dc.description.abstractCarrier sense is often used to regulate concurrency in wireless medium access control (MAC) protocols, balancing interference protection and spatial reuse. Carrier sense is known to be imperfect, and many improved techniques have been proposed. Is the search for a replacement justified? This paper presents a theoretical model for average case two-sender carrier sense based on radio propagation theory and Shannon capacity. Analysis using the model shows that carrier sense performance is surprisingly close to optimal for radios with adaptive bitrate. The model suggests that hidden and exposed terminals usually cause modest reductions in throughput rather than dramatic decreases. Finally, it is possible to choose a fixed sense threshold which performs well across a wide range of scenarios, in large part due to the role of the noise floor. Experimental results from an indoor 802.11 testbed support these claims.en_US
dc.language.isoen_US
dc.publisherAssociation for Computing Machinery (ACM)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1145/1594977.1592587en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alike 3.0en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/en_US
dc.sourceMIT web domainen_US
dc.titleIn Defense of Wireless Carrier Senseen_US
dc.typeArticleen_US
dc.identifier.citationMicah Z. Brodsky and Robert T. Morris. 2009. In defense of wireless carrier sense. In Proceedings of the ACM SIGCOMM 2009 conference on Data communication (SIGCOMM '09). ACM, New York, NY, USA, 147-158.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratoryen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Scienceen_US
dc.contributor.approverMorris, Robert Tappan
dc.contributor.mitauthorBrodsky, Micah Z. (Micah Zev)
dc.contributor.mitauthorMorris, Robert Tappan
dc.relation.journalProceedings of the ACM SIGCOMM 2009 conference on Data communication (SIGCOMM '09)en_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/ConferencePaperen_US
dspace.orderedauthorsBrodsky, Micah Z.; Morris, Robert T.en
dc.identifier.orcidhttps://orcid.org/0000-0003-2700-9286
dc.identifier.orcidhttps://orcid.org/0000-0002-7727-0063
dspace.mitauthor.errortrue
mit.licenseOPEN_ACCESS_POLICYen_US


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