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  • Research Article
  • Open Access

Bargaining and the MISO Interference Channel

EURASIP Journal on Advances in Signal Processing20092009:368547

  • Received: 31 October 2008
  • Accepted: 8 April 2009
  • Published:


We examine the MISO interference channel under cooperative bargaining theory. Bargaining approaches such as the Nash and Kalai-Smorodinsky solutions have previously been used in wireless networks to strike a balance between max-sum efficiency and max-min equity in users' rates. However, cooperative bargaining for the MISO interference channel has only been studied extensively for the two-user case. We present an algorithm that finds the optimal Kalai-Smorodinsky beamformers for an arbitrary number of users. We also consider joint scheduling and beamformer selection, using gradient ascent to find a stationary point of the Kalai-Smorodinsky objective function. When interference is strong, the flexibility allowed by scheduling compensates for the performance loss due to local optimization. Finally, we explore the benefits of power control, showing that power control provides nontrivial throughput gains when the number of transmitter/receiver pairs is greater than the number of transmit antennas.


  • Objective Function
  • Wireless Network
  • Nash
  • Stationary Point
  • Local Optimization

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Authors’ Affiliations

Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
Department of Electrical Engineering and Computer Science, University of California at Irvine, Irvine, CA 92697, USA


© M. Nokleby and A. L. Swindlehurst. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.