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AuthorEl Shafie, Ahmed
AuthorAl-dhahir, Naofal
AuthorHamila, Ridha
Available date2023-04-04T09:09:11Z
Publication Date2015
Publication Name2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
ResourceScopus
URIhttp://dx.doi.org/10.1109/WCNC.2015.7127632
URIhttp://hdl.handle.net/10576/41664
AbstractWe propose a novel protocol for secondary users based on compressive sensing principles. The secondary user assigned to one of the primary frequency bands is aided by a set of nearby secondary users, which we refer to as secondary relays. We assume that each secondary relay participates in relaying the secondary packets with certain probability. In a given time slot, each secondary relay indicates its ability of decoding the secondary packet and being a relay for the secondary transmission. Our proposed protocol exploits the sparsity of the participating relays set and is efficient as it allows dynamic relay assignment. When the primary user is inactive, the relays send their states to the secondary source which, in turn, transmits its own packet if the received number of decoding relays satisfies a predefined threshold. When the primary user is active, the relays perform cooperative beamforming to achieve a cooperative diversity gain for the secondary source while completely eliminating the interference to the primary destination. We study the performance of the system from a cross-layer point of view. 2015 IEEE.
Languageen
PublisherIEEE
SubjectBeamforming
cognitive radio
compressive sensing
cooperative communications
queues
relays
service rate
TitleExploiting sparsity of relay-assisted cognitive radio networks
TypeConference Paper
Pagination1153-1158
dc.accessType Abstract Only


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