Alternating Rate Profile Optimization in Single Stream MIMO Interference Channels
2014 (English)In: IEEE Signal Processing Letters, ISSN 1070-9908, E-ISSN 1558-2361, Vol. 21, no 2, 221-224 p.Article in journal, Letter (Refereed) PublishedText
The multiple-input multiple-output interference channel is considered with perfect channel information at the transmitters and single-user decoding receivers. With all transmissions restricted to single stream beamforming, we consider the problem of finding all Pareto optimal rate-tuples in the achievable rate region. The problem is cast as a rate profile optimization problem. Due to its nonconvexity, we resort to an alternating approach: For fixed receivers, optimal transmission is known. For fixed transmitters, we show that optimal receive beamforming is a solution to an inverse field of values problem. We prove the solution's stationarity and compare it with existing approaches.
Place, publisher, year, edition, pages
IEEE Press, 2014. Vol. 21, no 2, 221-224 p.
Alternating optimization; MIMO interference channel; Pareto optimality; single stream beamforming
IdentifiersURN: urn:nbn:se:kth:diva-182703DOI: 10.1109/LSP.2013.2297351ISI: 000330294100004ScopusID: 2-s2.0-84893398714OAI: oai:DiVA.org:kth-182703DiVA: diva2:1052188
QC 201612142016-12-052016-02-222016-12-14Bibliographically approved