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AuthorShafie, Ahmed El
AuthorAl-Dhahir, Naofal
AuthorHamila, Ridha
Available date2023-04-04T09:09:08Z
Publication Date2015
Publication Name2015 IEEE Globecom Workshops, GC Wkshps 2015 - Proceedings
ResourceScopus
URIhttp://dx.doi.org/10.1109/GLOCOMW.2015.7414050
URIhttp://hdl.handle.net/10576/41626
AbstractWe investigate joint information and energy cooperative schemes in a slotted-time cognitive radio network with a primary transmitter-receiver pair and a set of secondary transmitter-receiver pairs. The primary transmitter is assumed to be an energy-harvesting node. We propose a three-stage cooperative transmission protocol. During the first stage, the primary user releases a portion of its time slot to the secondary nodes to send their data and to power the energy-harvesting primary transmitter from the secondary radio-frequency signals. During the second stage, the primary transmitter sends its data to its destination and to the secondary nodes. During the third stage, the secondary nodes amplify and forward the primary data. We propose five different schemes for secondary access and powering the primary transmitter. We derive closed-form expressions for the primary and secondary rates for all the proposed schemes. Two of the proposed schemes use distributed beamforming to power the primary transmitter. We design a sparsity-aware relay-selection scheme based on the compressive sensing principles. Our numerical results demonstrate the gains of our proposed schemes for both the primary and secondary systems. 2015 IEEE.
Languageen
PublisherIEEE
SubjectCognitive radio
Cooperation
Energy harvesting
Simultaneous wireless information and power transfer
TitleCooperative access schemes for efficient SWIPT transmissions in cognitive radio networks
TypeConference Paper
dc.accessType Abstract Only


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