NDLI: Path-Centric Channel Assignment in Cognitive Radio Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Xin, Chunsheng Ma, Liangping Shen, Chien-Chung
Copyright Year	2007
Description	Author affiliation: San Diego Research Center, San Diego, CA 92121, lma@sdrcinc.net (Ma, Liangping) \|\| Dept. of Computer and Information Sciences, University of Delaware, Newark, DE 19716, cshen@cis.udel.edu (Shen, Chien-Chung) \|\| Dept. of Computer Science, Norfolk State University, Norfolk, VA 23504, cxin@nsu.edu (Xin, Chunsheng)
Abstract	Today's spectrum allocation framework grants a spectrum band to each wireless service for exclusive usage, resulting in the spectrum exhaustion problem. Nevertheless, many recent studies showed that a large number of spectrum bands are not used in most of time. To resolve spectrum exhaustion problem, the cognitive radio wireless networks, termed CogNets in this paper, were proposed in the literature, where unlicensed users are allowed to access licensed spectrum, provided that licensed users are not interfered. The CogNet nodes play the role of secondary user in this shared spectrum access framework, and thus the spectrum bands used by CogNets are inherently heterogeneous and dynamic. To establish the communication infrastructure for a CogNet, the cognitive radio of each CogNet node detects the accessible spectrum bands and chooses one as its operating frequency, a process termed channel assignment. In this paper we propose a path-centric channel assignment algorithm for multi-hop ad hoc CogNets. Numerical results showed that the proposed algorithm can obtain very good performance.
Starting Page	313
Ending Page	320
File Size	5916745
Page Count	8
File Format	PDF
ISBN	9781424408146
DOI	10.1109/CROWNCOM.2007.4549817
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability channel assignment TV Costs Cognitive radio wireless network programmable radio wireless network FCC Cognitive radio Computer science interface assignment Wireless networks Frequency Computer networks dynamic spectrum access wireless networks Radiofrequency identification
Content Type	Text
Resource Type	Article

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