A decoding-based fusion rule for cooperative spectrum sensing with nonorthogonal transmission of local decisions

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dc.contributor.authorBokharaiee, Simin
dc.contributor.authorNguyen, Ha H
dc.contributor.authorShwedyk, Ed
dc.date.accessioned2013-07-16T11:09:19Z
dc.date.available2013-07-16T11:09:19Z
dc.date.issued2013-07-08
dc.date.updated2013-07-16T11:09:20Z
dc.description.abstractAbstract Cooperative spectrum sensing in cognitive radio (CR) networks is studied in which each CR performs energy detection to obtain a binary decision on the absence/presence of the primary user. The problem of interest is how to efficiently report and combine the local decisions to/at the fusion center under fading channels. In order to reduce the required transmission bandwidth in the reporting phase, the paper examines nonorthogonal transmission of local decisions by means of on-off keying. Proposed and analyzed is a novel decoding-based fusion rule that essentially performs in three steps: (1) estimating minimum mean-square error of the transmitted information from cognitive radios, (2) making hard decisions of the transmitted bits based on the estimated information, and (3) combining the hard decisions in a linear manner. Simulation results support the theoretical analysis and show that the added complexity of the decoding-based fusion rule leads to a considerable performance gain over the simpler energy-based fusion rule when the reporting links are reasonably strong.
dc.description.versionPeer Reviewed
dc.identifier.citationEURASIP Journal on Wireless Communications and Networking. 2013 Jul 08;2013(1):184
dc.identifier.doihttp://dx.doi.org/10.1186/1687-1499-2013-184
dc.identifier.urihttp://hdl.handle.net/1993/21928
dc.language.rfc3066en
dc.rightsopen accessen_US
dc.rights.holderSimin Bokharaiee et al.; licensee BioMed Central Ltd.
dc.titleA decoding-based fusion rule for cooperative spectrum sensing with nonorthogonal transmission of local decisions
dc.typeJournal Article
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