Dynamic spectrum access with two channel sensing in cognitive radio networks

Lai, J; Dutkiewicz, E; Liu, RP; Vesilo, R; Zheng, C

Dynamic spectrum access with two channel sensing in cognitive radio networks

Lai, J Dutkiewicz, E

Liu, RP

Vesilo, R Zheng, C

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Publication Type:: Conference Proceeding
Citation:: IEEE International Conference on Communications, 2012, pp. 1757 - 1762
Issue Date:: 2012-12-01

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Field	Value	Language
dc.contributor.author	Lai, J	en_US
dc.contributor.author	Dutkiewicz, E https://orcid.org/0000-0002-4268-9286	en_US
dc.contributor.author	Liu, RP https://orcid.org/0000-0001-7001-6305	en_US
dc.contributor.author	Vesilo, R	en_US
dc.contributor.author	Zheng, C	en_US
dc.date.issued	2012-12-01	en_US
dc.identifier.citation	IEEE International Conference on Communications, 2012, pp. 1757 - 1762	en_US
dc.identifier.isbn	9781457720529	en_US
dc.identifier.issn	1550-3607	en_US
dc.identifier.uri	http://hdl.handle.net/10453/119631
dc.description.abstract	In this paper we present a novel dynamic spectrum sensing and access model in cognitive radio networks. This model allows secondary users (SUs) to sequentially sense two channels in a single time slot and provides coordinated access of multiple SUs to the available channels. The presented access model is formulated as a channel assignment optimization problem which is shown to be NP-hard. We subsequently propose and analyze a Markov chain based greedy channel assignment scheme (MCGA) which allows for sequential sensing of two channels with a priority order per time slot. Finally, we analyze and evaluate the performance of our approach in a saturated network. Our analytical results, validated by simulation, indicate that compared to the existing work, our approach can achieve significant improvements in terms of SU throughput and MAC delay. © 2012 IEEE.	en_US
dc.relation.ispartof	IEEE International Conference on Communications	en_US
dc.relation.isbasedon	10.1109/ICC.2012.6364284	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Dynamic spectrum access with two channel sensing in cognitive radio networks	en_US
dc.type	Conference Proceeding
utslib.for	100510 Wireless Communications	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US

Abstract:

In this paper we present a novel dynamic spectrum sensing and access model in cognitive radio networks. This model allows secondary users (SUs) to sequentially sense two channels in a single time slot and provides coordinated access of multiple SUs to the available channels. The presented access model is formulated as a channel assignment optimization problem which is shown to be NP-hard. We subsequently propose and analyze a Markov chain based greedy channel assignment scheme (MCGA) which allows for sequential sensing of two channels with a priority order per time slot. Finally, we analyze and evaluate the performance of our approach in a saturated network. Our analytical results, validated by simulation, indicate that compared to the existing work, our approach can achieve significant improvements in terms of SU throughput and MAC delay. © 2012 IEEE.

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