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New cooperative strategy for cognitive radios with wireless powered primary users

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Azmat, Freeha, Zhou, Yulin and Chen, Yunfei (2018) New cooperative strategy for cognitive radios with wireless powered primary users. International Journal of Communication Systems, 31 (7). e3355. doi:10.1002/dac.3355 ISSN 1074-5351.

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Official URL: http://doi.org/10.1002/dac.3355

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Abstract

Conventional strategy for cognitive radios does not assume any energy harvesting capability at the primary users. However, this is not the case when primary users are wirelessly powered, especially in wireless sensor works that are widely used in the Internet of Things. In this paper, we propose a new cooperative strategy where the secondary user transmits data if the primary users are detected to be idle or harvest energy, in contrast to conventional strategy where the secondary user only transmits data if the primary users are detected idle. The performances of this new strategy are analysed. Numerical results show that primary user can achieve energy gain from the transmission of secondary user and that secondary user can also achieve throughput gain by transmitting data when primary user performs energy harvesting. On the other hand, secondary user harvests less energy on average using the new strategy as it has to transmit data when primary user harvests energy.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
SWORD Depositor: Library Publications Router
Journal or Publication Title: International Journal of Communication Systems
Publisher: Wiley-Blackwell
ISSN: 1074-5351
Official Date: 10 May 2018
Dates:
DateEvent
10 May 2018Published
19 June 2017Available
6 May 2017Accepted
Volume: 31
Number: 7
Article Number: e3355
DOI: 10.1002/dac.3355
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Related URLs:
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