Asymptotically Optimal Transmit Strategies for the Multiple Antenna Interference Channel
2008 (English)In: Proceedings of the 46th Annual Allerton Conference on Communication, Control, and Computing (Allerton'08), 2008, 708-714 p.Conference paper (Refereed)
We consider the interference channel with multiple antennas at the transmitter. We prove that at high signal-to-noise ratio (SNR), the zero-forcing transmit scheme is optimal in the sum-rate sense. Furthermore we prove that at low SNR, maximum-ratio transmission is optimal in the sum-rate sense. We also provide a discussion of the connection to classical results on spectral efficiency in the wideband regime. Finally, we propose a non-convex optimization approach based on monotonic optimization to solve the sum rate maximization problem.
Place, publisher, year, edition, pages
2008. 708-714 p.
MIMO communication, antenna arrays, multifrequency antennas, optimisation, transmitting antennas, maximum-ratio transmission, monotonic optimization, multiple antenna interference channel, nonconvex optimization approach, optimal transmit strategies, signal-to-noise ratio, sum rate maximization problem, zero-forcing transmit scheme
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-21878DOI: 10.1109/ALLERTON.2008.4797627OAI: oai:DiVA.org:liu-21878DiVA: diva2:241896