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A Non-uniform Bandwidth Allocation Scheme for Efficient Cognitive Spectrum Access
S China University of Technology, Peoples R China.
University of Maryland, MD 20742 USA; University of Maryland, MD 20742 USA.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering. University of Maryland, MD 20742 USA.
2015 (English)In: 2015 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), IEEE , 2015, 7725-7730 p.Conference paper (Refereed)Text
Abstract [en]

In cognitive communication, dynamic sensing and opportunistic accessing enable secondary users to recognize and utilize the white spaces of the licensed bandwidth. Most present efforts focus on designing smarter channel sensing and access algorithms for secondary users to optimize the overall throughput and bandwidth utilization efficiency, without interfering with primary users communication. However, the transmission of the primary users are basically random and unpredictable, which usually makes the cognitive process complex and ineffective. In this paper, a non-uniform bandwidth allocation scheme is proposed, in order to regularize primary users bandwidth occupancy, which can in turn improve the sensing efficiency and throughput of the secondary users. The performance benefits are demonstrated analytically and verified by numerical simulations. In comparison to the conventional uniform bandwidth allocation scheme, the non-uniform scheme shows a higher sensing efficiency and spectrum utilization due to less bandwidth loss and lower sensing cost.

Place, publisher, year, edition, pages
IEEE , 2015. 7725-7730 p.
Series
, IEEE International Conference on Communications, ISSN 1550-3607
Keyword [en]
Cognitive communication; non-uniform bandwidth allocation; sensing efficiency
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:liu:diva-127297DOI: 10.1109/ICC.2015.7249562ISI: 000371708107158ISBN: 978-1-4673-6432-4OAI: oai:DiVA.org:liu-127297DiVA: diva2:921292
Conference
IEEE International Conference on Communications (ICC)
Available from: 2016-04-20 Created: 2016-04-19 Last updated: 2016-04-20

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ReferencesLink to record
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