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dc.contributor.authorMiliotis, Vasileios
dc.contributor.authorKoutsopoulos, Iordanis
dc.contributor.authorAlonso Zárate, Luis Gonzaga
dc.contributor.authorVerikoukis, Christos
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationMiliotis, V. [et al.]. Low-overhead heuristic algorithms for spectrum sensing in cognitive radio networks. A: European Wireless. "European Wireless 2014: 20th European Wireless Conference: Centre Tecnologic de Telecomunicacions de Catalunya (CTTC): 14–16 May 2014: Barcelona, Spain". Barcelona: VDE Conference Publications, 2014, p. 391-396.
dc.description.abstractCognitive Radio (CR) has matured as a research field and has the goal to improve the utilization of spectrum. This technology enables a CR user to function in unlicensed or licensed bands without causing interference to primary users. In order to achieve this functionality a CR user needs to sense the spectrum and exploit efficiently the transmission opportunities. In this paper we propose two heuristic sensing algorithms for adhoc CR networks with low computational requirements, where each user tries to exploit ??spectrum holes?? based only on its own observations. The first algorithm refers to an immediate reward approach, according to which, each time a ??spectrum hole?? is detected, it is used instantaneously. The second refers to an immediate-versus-future-reward approach, where the CR may wait to sense the next channel instead of transmitting in the current one, if the expected reward when using the next channel is greater than the instant. In our proposed algorithms we examine both known and unknown statistics of channels. For the case of unknown channel parameters we introduce an initial sensing time and we investigate through simulations the impact of different sensing periods on the system's throughput.
dc.format.extent6 p.
dc.publisherVDE Conference Publications
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radiodifusió per ràdio
dc.subject.lcshCognitive radio networks
dc.subject.lcshSoftware radio
dc.titleLow-overhead heuristic algorithms for spectrum sensing in cognitive radio networks
dc.typeConference report
dc.subject.lemacRàdio -- Software
dc.subject.lemacXarxes de ràdio cognitiva
dc.contributor.groupUniversitat Politècnica de Catalunya. WiComTec - Grup de recerca en Tecnologies i Comunicacions Sense Fils
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorMiliotis, V.; Koutsopoulos, I.; Alonso, L.; Verikoukis, C.
local.citation.contributorEuropean Wireless
local.citation.publicationNameEuropean Wireless 2014: 20th European Wireless Conference: Centre Tecnologic de Telecomunicacions de Catalunya (CTTC): 14–16 May 2014: Barcelona, Spain

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