NDLI: The Spectrum Allocation Algorithm of Cognitive Radio Based on OFDM

Content Provider	IEEE Xplore Digital Library
Author	Xin Liu Xuezhi Tan
Copyright Year	2008
Description	Author affiliation: Res. Centre of Commun., Harbin Inst. of Technol., Harbin (Xin Liu; Xuezhi Tan)
Abstract	Based on the characteristics of cognitive radio (CR) and the transmission features of OFDM, this article offers the algorithms for the spectrum allocation in OFDM. Aiming at the probability of detection by the CR and the upper limit of the noise which can be suffered by the authorized user, CR achieves the maximal channel capability through the allocation of the sub-carriers and the power. This article provides three algorithms: the Irrigation Algorithm with the capacity optimization, the Revision Greedy Algorithm with the minimum interference to the authorized user and the Grouping Allocation Algorithm with the minimum computation load. These three algorithms emphasize particularly on different characters about CR. The simulation indicates that when the amount of the sub-channels is great, the Revision Greedy Algorithm is suited for the CR; the Grouping Allocation Algorithm has a better real-time performance, although we need choose an appropriate grouping number to balance the complexity of computation and the loss of channel capacity.
Starting Page	1
Ending Page	4
File Size	135496
Page Count	4
File Format	PDF
ISBN	9781424421077
DOI	10.1109/WiCom.2008.299
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Greedy algorithms Wireless communication Irrigation OFDM Communication system control Chromium Communications technology Cognitive radio Resource management Radio spectrum management
Content Type	Text
Resource Type	Article

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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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