The MISO Interference Channel from a Game-theoretic Perspective: A Combination of Selfishness and Altruism Achieves Pareto Optimality
2008 (English)In: Proceedings of the 33rd IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP'08), IEEE , 2008, 5364-5367 p.Conference paper (Refereed)
Recently, it was shown that the rates at the non-cooperative Nash equilibrium (NE) strategy are poor especially in the medium and high SNR regimes. A reasonable outcome of the cooperative approach, close to the Pareto boundary of the achievable rate region, was shown to be the zero-forcing (ZF) strategy. In this work, we prove that any point on the Pareto boundary can be achieved by a certain linear combination of the NE and ZF strategies. A scalar weight per user chooses between "selfish" (NE) and altruistic (ZF) behavior. Thereby, the difficult beamforming optimization is reduced to a simple weight optimization. Different optimal operating points, e.g. maximum weighted sum-rate, the Nash-bargaining solution, or the Egalitarian solution, can be obtained by a computationally efficient iterative algorithm. The results are characterized by instantaneous achievable rate regions and the corresponding operating points.
Place, publisher, year, edition, pages
IEEE , 2008. 5364-5367 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-25603DOI: 10.1109/ICASSP.2008.4518872ISBN: 978-1-4244-1483-3OAI: oai:DiVA.org:liu-25603DiVA: diva2:246086