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When Is the Achievable Rate Region Convex in Two-User Massive MIMO Systems?
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
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
2018 (English)In: IEEE Wireless Communications Letters, ISSN 2162-2337, E-ISSN 2162-2345, Vol. 7, no 5, p. 796-799Article in journal (Refereed) Published
Abstract [en]

This letter investigates the achievable rate region in massive multiple-input-multiple-output systems with two users, with a focus on the i.i.d. Rayleigh fading and line-of-sight (LoS) scenarios. If the rate region is convex, spatial multiplexing is preferable to orthogonal scheduling, while the opposite is true for non-convex regions. We prove that the uplink and downlink rate regions with i.i.d. Rayleigh fading are convex, while the convexity in LoS depends on parameters such as angular user separation, number of antennas, and signal-to-noise ratio (SNR).

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2018. Vol. 7, no 5, p. 796-799
Keywords [en]
Rate region; convexity; massive MIMO
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-152398DOI: 10.1109/LWC.2018.2825443ISI: 000447048200028OAI: oai:DiVA.org:liu-152398DiVA, id: diva2:1259612
Note

Funding Agencies|ELLIIT; CENIIT; Swedish Foundation for Strategic Research

Available from: 2018-10-30 Created: 2018-10-30 Last updated: 2019-06-28

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CiteExportLink to record
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  • sv-SE
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Output format
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