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Optimal Power Control for Superimposed Pilots in Uplink Massive MIMO Systems
Linköpings universitet, Institutionen för systemteknik, Kommunikationssystem. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för systemteknik, Kommunikationssystem. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-5954-434x
2018 (engelsk)Inngår i: 2018 CONFERENCE RECORD OF 52ND ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, Institute of Electrical and Electronics Engineers (IEEE), 2018, s. 499-503Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In Massive MIMO, the pilot contamination effect reduces the spectral efficiency (SE) gains and superimposed pilot (SP) transmission has been proposed to mitigate this effect. SP is based on transmitting pilot and data symbols simultaneously to allow for longer pilots and no pilot overhead. This work studies the optimal power control strategies in the uplink of a Massive MIMO system with SP and detection based on maximum ratio combining The optimization objectives arc maximum product of SINRs and max-min fairness, and these problems are reformulated as geometric programs which allow for efficient implementations. The numerical results indicate that the SE gains from the optimal power control with respect to the heuristic statistical channel inversion power control, are more significant when the interference from pilot symbols is subtracted before data detection.

sted, utgiver, år, opplag, sider
Institute of Electrical and Electronics Engineers (IEEE), 2018. s. 499-503
Serie
Conference Record of the Asilomar Conference on Signals Systems and Computers, ISSN 1058-6393
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-158405DOI: 10.1109/ACSSC.2018.8645504ISI: 000467845100087Scopus ID: 2-s2.0-85062964217ISBN: 978-1-5386-9218-9 (digital)OAI: oai:DiVA.org:liu-158405DiVA, id: diva2:1332824
Konferanse
52nd Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, 28-31 Oct. 2018
Tilgjengelig fra: 2019-06-28 Laget: 2019-06-28 Sist oppdatert: 2019-08-29bibliografisk kontrollert

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