NDLI: Graph-based spectrum sharing for multiuser OFDM Cognitive Radio Networks

Content Provider	IEEE Xplore Digital Library
Author	Tao Qiu Wenjun Xu Zhiqiang He Kai Niu Baoyu Tian
Copyright Year	2011
Description	Author affiliation: Mobile Communication Lab, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, P.R. China (Tao Qiu; Wenjun Xu; Zhiqiang He; Kai Niu; Baoyu Tian)
Abstract	Spectrum sharing in OFDM-based Cognitive Radio Networks (CRN) is investigated by using graph theory. We consider the networks in which a set of secondary links (SLs) make underlay access to support single-hop ad hoc transmission. Spectrum sharing must be carried out in SLs so that no excessive interference is caused to links of the primary network and maximizes the total achievable rates of SLs. We divide the spectrum sharing into two stages: coarse-scale interference mitigation and SINR-based channel mapping. Interference mitigation is done through constructing weighted undirected interference graph and applying k-max cut method. Then we perform channel-cluster mapping, which takes instantaneous channel quality into consider, on the basis of interference mitigation. Low-complexity heuristic algorithms are proposed to effectively solve the problems of each stage. Numerical simulations for various scenarios are executed to show the superior performance of the proposed schemes.
Starting Page	1
Ending Page	5
File Size	601668
Page Count	5
File Format	PDF
ISBN	9781457710094
e-ISBN	9781457710100
e-ISBN	9781457710087
DOI	10.1109/WCSP.2011.6096929
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Clustering algorithms Interference Channel allocation Cognitive radio network Graph theory Spectrum sharing Resource management Cognitive radio Signal to noise ratio
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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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