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Max-Min Fair Transmit Precoding for Multi-Group Multicasting in Massive MIMO
Singapore Univ Technol and Design, Singapore.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-5954-434X
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-7599-4367
Singapore Univ Technol and Design, Singapore.
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2018 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 17, no 2, p. 1358-1373Article in journal (Refereed) Published
Abstract [en]

This paper considers the downlink precoding for physical layer multicasting in massive multiple-input multiple-output (MIMO) systems. We study the max-min fairness (MMF) problem, where channel state information at the transmitter is used to design precoding vectors that maximize the minimum spectral efficiency (SE) of the system, given fixed power budgets for uplink training and downlink transmission. Our system model accounts for channel estimation, pilot contamination, arbitrary path-losses, and multi-group multicasting. We consider six scenarios with different transmission technologies (unicast and multicast), different pilot assignment strategies (dedicated or shared pilot assignments), and different precoding schemes (maximum ratio transmission and zero forcing), and derive achievable spectral efficiencies for all possible combinations. Then, we solve the MMF problem for each of these scenarios, and for any given pilot length, we find the SE maximizing uplink pilot and downlink data transmission policies, all in closed forms. We use these results to draw a general guideline for massive MIMO multicasting design, where for a given number of base station antennas, number of users, and coherence interval length, we determine the multicasting scheme that shall be used.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2018. Vol. 17, no 2, p. 1358-1373
Keywords [en]
Multicast transmission; massive MIMO; physical layer precoding; large-scale antenna systems
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-145460DOI: 10.1109/TWC.2017.2777987ISI: 000424945600048OAI: oai:DiVA.org:liu-145460DiVA, id: diva2:1192588
Note

Funding Agencies|Swedish Research Council (VR); ELLIIT; A*Star SERC Project [142 02 00043, NSFC 61750110529]

Available from: 2018-03-22 Created: 2018-03-22 Last updated: 2019-06-28

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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More styles
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