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Massive MIMO for Next Generation Wireless Systems
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-7599-4367
Lund University, Sweden .
Lund University, Sweden .
Bell Labs, Alcatel-Lucent, NJ, USA .
2014 (English)In: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 52, no 2, 186-195 p.Article in journal (Refereed) Published
Abstract [en]

Multi-user MIMO offers big advantages over conventional point-to-point MIMO: it works with cheap single-antenna terminals, a rich scattering environment is not required, and resource allocation is simplified because every active terminal utilizes all of the time-frequency bins. However, multi-user MIMO, as originally envisioned, with roughly equal numbers of service antennas and terminals and frequency-division duplex operation, is not a scalable technology. Massive MIMO (also known as large-scale antenna systems, very large MIMO, hyper MIMO, full-dimension MIMO, and ARGOS) makes a clean break with current practice through the use of a large excess of service antennas over active terminals and time-division duplex operation. Extra antennas help by focusing energy into ever smaller regions of space to bring huge improvements in throughput and radiated energy efficiency. Other benefits of massive MIMO include extensive use of inexpensive low-power components, reduced latency, simplification of the MAC layer, and robustness against intentional jamming. The anticipated throughput depends on the propagation environment providing asymptotically orthogonal channels to the terminals, but so far experiments have not disclosed any limitations in this regard. While massive MIMO renders many traditional research problems irrelevant, it uncovers entirely new problems that urgently need attention: the challenge of making many low-cost low-precision components that work effectively together, acquisition and synchronization for newly joined terminals, the exploitation of extra degrees of freedom provided by the excess of service antennas, reducing internal power consumption to achieve total energy efficiency reductions, and finding new deployment scenarios. This article presents an overview of the massive MIMO concept and contemporary research on the topic.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers , 2014. Vol. 52, no 2, 186-195 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-105585DOI: 10.1109/MCOM.2014.6736761ISI: 000331904900024Scopus ID: 2-s2.0-84896823919OAI: oai:DiVA.org:liu-105585DiVA: diva2:708723
Available from: 2014-03-28 Created: 2014-03-27 Last updated: 2017-12-05Bibliographically approved

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Larsson, Erik G

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