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Shannon Meets Nash on the Interference Channel

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2 Author(s)
Randall A. Berry ; Dept. of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL, USA ; David N. C. Tse

The interference channel is the simplest communication scenario where multiple autonomous users compete for shared resources. We combine game theory and information theory to define the notion of a Nash equilibrium region of the interference channel. The notion is game theoretic: it captures the selfish behavior of each user as they compete. The notion is also information theoretic: it allows each user to use arbitrary communication strategies as it optimizes its own performance. We give an exact characterization of the Nash equilibrium region of the two-user linear deterministic interference channel and an approximate characterization of the Nash equilibrium region of the two-user Gaussian interference channel to within 1 bit/s/Hz.

Published in:

IEEE Transactions on Information Theory  (Volume:57 ,  Issue: 5 )