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Two-Layer Decoding in Cellular Massive MIMO Systems with Spatial Channel Correlation
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: 0000-0002-2093-5466
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering. (Communication Systems Division)ORCID iD: 0000-0002-5954-434x
2019 (English)In: Proceedings of 2019 IEEE International Conference on Communications, ICC 2019, 2019, article id 8761502Conference paper, Published paper (Refereed)
Abstract [en]

This paper studies a two-layer decoding method that mitigates inter-cell interference in multi-cell Massive MIMO systems. In layer one, each base station (BS) estimates the channels to intra-cell users and uses the estimates for local decoding on each BS, followed by a second decoding layer where the BSs cooperate to mitigate inter-cell interference. An uplink achievable spectral efficiency (SE) expression is computed for arbitrary two-layer decoding schemes, while a closed-form expression is obtained for correlated Rayleigh fading channels, maximum-ratio combining (MRC), and large-scale fading decoding (LSFD) in the second layer. We formulate a non-convex sum SE maximization problem with both the data power and LSFD vectors as optimization variables and develop an algorithm based on the weighted MMSE (minimum mean square error) approach to obtain a stationary point with low computational complexity.

Place, publisher, year, edition, pages
2019. article id 8761502
Series
IEEE International Conference on Communications (ICC), ISSN 1550-3607
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:liu:diva-156971DOI: 10.1109/ICC.2019.8761502ISI: 000492038802139ISBN: 9781538680889 (electronic)ISBN: 9781538680896 (print)OAI: oai:DiVA.org:liu-156971DiVA, id: diva2:1316476
Conference
IEEE International Conference on Communications (ICC), Shanghai, China, 20-24 May 2019
Funder
ELLIIT - The Linköping‐Lund Initiative on IT and Mobile Communications
Note

Funding agencies: European UnionEuropean Union (EU) [641985]; ELLIIT; CENIIT

Available from: 2019-05-18 Created: 2019-05-18 Last updated: 2019-11-11Bibliographically approved

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Van Chien, TrinhMollén, ChristopherBjörnson, Emil

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CiteExportLink to record
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  • apa
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