NDLI: Optimal medium access protocols for cognitive radio networks

Content Provider	IEEE Xplore Digital Library
Author	Lifeng Lai El Gamal, H. Hai Jiang Poor, H.V.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. Eng., Princeton Univ., Princeton, NJ (Lifeng Lai)
Abstract	This paper focuses on the design of medium access control protocols for cognitive radio networks. The scenario in which a single cognitive user wishes to opportunistically exploit the availability of empty frequency bands within parts of the radio spectrum having multiple bands is first considered. In this scenario, the availability probability of each channel is unknown a priori to the cognitive user. Hence efficient medium access strategies must strike a balance between exploring (learning) the availability probability of the channels and exploiting the knowledge of the availability probability identified thus far. For this scenario, an optimal medium access strategy is derived and its underlying recursive structure is illustrated via examples. To avoid the prohibitive computational complexity of this optimal strategy, a low complexity asymptotically optimal strategy is developed. Next, the multi-cognitive user scenario is considered and low complexity medium access protocols, which strike an optimal balance between exploration and exploitation in such competitive environments, are developed.
Starting Page	328
Ending Page	334
File Size	166216
Page Count	7
File Format	PDF
ISBN	9789639799189
DOI	10.1109/WIOPT.2008.4586086
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-01
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	ICST
Subject Keyword	Wireless networks Access protocols Telecommunication traffic Probability Throughput Media Access Protocol Frequency Cognitive radio Probes Computational complexity
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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