Closed-form parameterization of the Pareto boundary for the two-user MISO interference channel

In this paper, we study an achievable rate region of the two-user multiple-input single-output (MISO) interference channel. We find the transmit beamforming vectors that achieve Pareto-optimal points. We do so, by deriving a sufficient condition for Pareto optimality. Given the beamforming vector of one transmitter, this condition enables us to determine the beamforming vector of the other transmitter that forms a Pareto-optimal pair. The latter can be done in closed form by solving a cubic equation. The result is validated against state-of-the-art methods via numerical illustrations.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Johannes Lindblom, Eleftherios Karipidis, Erik G. Larsson
• Keywords: Achievable Rate Region, Beamforming, ICASSP 2011, Pareto Optimality, Signal Processing