NDLI: Robust Worst-Case Interference Control in Underlay Cognitive Radio Networks

Content Provider	IEEE Xplore Digital Library
Author	Parsaeefard, S. Sharafat, A.R.
Copyright Year	1967
Abstract	We investigate the problem of power allocation to secondary users (SUs) in underlay cognitive radio networks (CRNs), where the channel state information (CSI) pertaining to the link between an SU's transmitter and a primary user (PU) receiver is uncertain. To keep the interference of SUs to PUs below a given threshold under any realization of uncertainty in CSI, we utilize the robust optimization theory where uncertainty in CSI is defined by a bounded distance between its estimated and exact values, demonstrate that the convexity of allocating power to SUs is preserved, and show that it can be solved in a computationally efficient manner. Considering worst-case interference is a very conservative approach that, although protects PUs to the maximum extent, may cause undesirable and significant reductions in the SUs' throughput as well, which at many instances may not be necessary. Hence, when permissible, it is worthwhile to tradeoff between the robust worst-case interference control to PUs and the SUs' throughput. In doing so, we maintain the probability of violating the interference to PUs below a given threshold by applying the differential norm and the chance constrained approaches, both of which can be solved very efficiently via a water-filling-like formula. Simulation results show the effectiveness of our proposed approach.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	3731
Ending Page	3745
Page Count	15
File Size	637210
File Format	PDF
ISSN	00189545
Volume Number	61
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Uncertainty Interference Robustness Optimization Throughput Receivers Resource management uncertainty region Chance constrained approach cognitive radio networks (CRNs) differential norm (D-norm) robust worst-case interference control robustness–optimality tradeoff
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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