NDLI: Resource allocation games in interference relay channels

Content Provider	IEEE Xplore Digital Library
Author	Belmega, E.V. Djeumou, B. Lasaulce, S.
Copyright Year	2009
Description	Author affiliation: LSS (joint lab of CNRS, Supélec, Univ. Paris-Sud 11), Supélec, Plateau du Moulon, 91192, Gif-sur-Yvette Cedex, France (Belmega, E.V.; Djeumou, B.; Lasaulce, S.)
Abstract	In this paper we study a distributed network comprising an interference channel in parallel with an interference relay channel. Therefore each source node can use two frequency bands and has to implement a certain power allocation policy. An example of application of such a model is the case where the performance of terminals operating in unlicensed bands would be enhanced by being allowed to exploit an additional frequency band in which a relay is available. In this network model, each user is selfish and wants to maximize its Shannon transmission rate. We analyze two cases. In the first case, the relaying node is assumed to implement an amplify-and-forward (AF) protocol while in the second case it implements the decode-and-forward (DF) protocol introduced by Cover and El Gamal. For both cases we analyze the existence and uniqueness issues of the equilibrium of the aforementioned power allocation games. Several interesting and new results are provided. In particular: 1. The existence of a Nash equilibrium is shown to be always guaranteed in the case of the AF protocol; 2. The performance of a user or the network does not necessarily increase with the transmit power available at the relay; 3. We show that there is naturally a game in interference relay channels (even if the power allocation policy is fixed) when the DF protocol is used; this game is induced by the decentralized choice of the cooperation degree between each source node and the relay node.
Starting Page	575
Ending Page	584
File Size	3576272
Page Count	10
File Format	PDF
ISBN	9781424441761
DOI	10.1109/GAMENETS.2009.5137447
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-13
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols interference channel Nash equilibrium Interference channels Decoding Relays Game theory power allocation game Radio spectrum management relay channel cognitive radio Frequency information theory open spectrum access Resource management Integrated circuit modeling
Content Type	Text
Resource Type	Article

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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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