Reference : Convergence of the Iterative Water-Filling Algorithm in Multiple User Spectrum Sharin...

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Computer science Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/10993/7505

Title :	Convergence of the Iterative Water-Filling Algorithm in Multiple User Spectrum Sharing Scenarios
Language :	English
Author, co-author :	Shankar, Bhavani [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	von Wrycza, Peter [> >]
	Bengtsson, Mats [> >]
	Ottersten, Björn [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Publication date :	2009
Main document title :	Communication Technologies Workshop (Swe-CTW), 2011 IEEE Swedish
Publisher :	IEEE
Pages :	80-85
Peer reviewed :	Yes
Audience :	International
ISBN :	978-1-4577-1877-9
Event name :	Communication Technologies Workshop (Swe-CTW), 2011 IEEE Swedish
Event date :	19-21 Oct. 2011
Event place (city) :	Stockholm
Event country :	Sweden
Abstract :	[en] Spectrum sharing between multiple independent, coexisting transmit-receive pairs (TRPs, also termed as users) is formulated as a non-cooperative game with the TRPs as players, their individual link rates as payoffs and the iterative water-filling algorithm (IWFA) as the strategy for each TRP. The dynamics of this distributed algorithm are studied for sequential and simultaneous update mechanisms to determine the nature of convergence. Global convergence to unique Nash Equilibrium (NE) is considered and sufficient conditions tighter than those in the literature are derived. Necessary conditions are also derived to complement the sufficient conditions. The necessary conditions serve as tools for characterizing the structure of NE and also highlight the sensitivity of convergence to update orders in sequential IWFA.
Target :	Others
Permalink :	http://hdl.handle.net/10993/7505
	also: http://hdl.handle.net/10993/7575
DOI :	10.1109/Swe-CTW.2011.6082494

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