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Title: Fair beam allocation in millimeter-wave multiuser transmission
Authors: Karababa, F.
Küçük, F.
Girici, Tolga
Issue Date: 2017
Publisher: VDE Verlag GmbH
Source: 21st International ITG Workshop on Smart Antennas, WSA 2017, 15 March 2017 through 17 March 2017, , 151910
Abstract: This paper addresses the problem of proportional fair beam allocation in millimeter wave (mmWave) switched-beam based systems. Working at the mmWave band facilitates using a massive number of antenna elements at the base station (BS). Usage of beamforming in large antenna arrays provides high directivity and increased SINR at the receivers. In this setting intelligent beam allocation over multiple time slots is required for fair rate allocation to users. Activating multiple beams simultaneously requires an algorithm that takes interbeam interference into account. We formulate the proportional fair beam allocation as a mixed integer nonlinear programming with an objective of logarithmic sum of average received rates. As for received rates at each time slot, Shannon capacity is used, taking the inter-beam interference into account. We also propose a near-MINLP-based solution as our interference-aware fair beam allocation algorithm. Numerical evaluation results reveal that proposed proportional fair beam allocation algorithm performs very close to the MINLP-based solution and performs much better than the considered benchmark algorithms. © 2017 VDE VERLAG GMBH.
ISBN: 9783800743940
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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