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Ubiquitous cell-free Massive MIMO communications
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-6078-835X
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-5954-434X
Queens Univ Belfast, North Ireland.
Ericsson AB, Ericsson Res, S-58330 Linkoping, Sweden.
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2019 (English)In: EURASIP Journal on Wireless Communications and Networking, ISSN 1687-1472, E-ISSN 1687-1499, article id 197Article, review/survey (Refereed) Published
Abstract [en]

Since the first cellular networks were trialled in the 1970s, we have witnessed an incredible wireless revolution. From 1G to 4G, the massive traffic growth has been managed by a combination of wider bandwidths, refined radio interfaces, and network densification, namely increasing the number of antennas per site. Due its cost-efficiency, the latter has contributed the most. Massive MIMO (multiple-input multiple-output) is a key 5G technology that uses massive antenna arrays to provide a very high beamforming gain and spatially multiplexing of users and hence increases the spectral and energy efficiency (see references herein). It constitutes a centralized solution to densify a network, and its performance is limited by the inter-cell interference inherent in its cell-centric design. Conversely, ubiquitous cell-free Massive MIMO refers to a distributed Massive MIMO system implementing coherent user-centric transmission to overcome the inter-cell interference limitation in cellular networks and provide additional macro-diversity. These features, combined with the system scalability inherent in the Massive MIMO design, distinguish ubiquitous cell-free Massive MIMO from prior coordinated distributed wireless systems. In this article, we investigate the enormous potential of this promising technology while addressing practical deployment issues to deal with the increased back/front-hauling overhead deriving from the signal co-processing.

Place, publisher, year, edition, pages
SPRINGEROPEN , 2019. article id 197
Keywords [en]
Cell-free Massive MIMO; Distributed processing; Radio stripe system
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-159710DOI: 10.1186/s13638-019-1507-0ISI: 000478912900003OAI: oai:DiVA.org:liu-159710DiVA, id: diva2:1343893
Note

Funding Agencies|European Union [641985]; ELLIIT

Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-09-11

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