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Downlink Spectral E...
Downlink Spectral Efficiency of Cell-Free Massive MIMO with Full-Pilot Zero-Forcing
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- Interdonato, Giovanni, 1986- (författare)
- Ericsson Research, Linköping, 581 12, Sweden,Ericsson Res, S-58112 Linköping, Sweden.;Linköping Univ, Dept Elect Engn ISY, S-58183 Linköping, Sweden.
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- Karlsson, Marcus, 1988- (författare)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten,Linköping Univ, Dept Elect Engn ISY, S-58183 Linköping, Sweden.
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- Björnson, Emil, 1983- (författare)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten,Linköping Univ, Dept Elect Engn ISY, S-58183 Linköping, Sweden.
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- Larsson, Erik G., 1974- (författare)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten,Linköping Univ, Dept Elect Engn ISY, S-58183 Linköping, Sweden.
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Ericsson Research, Linköping, 581 12, Sweden Ericsson Res, S-58112 Linköping, Sweden;Linköping Univ, Dept Elect Engn ISY, S-58183 Linköping, Sweden. (creator_code:org_t)
- IEEE, 2018
- 2018
- Engelska.
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Ingår i: 2018 IEEE Global Conference on Signal and Information Processing (GlobalSIP). - : IEEE. - 9781728112954 - 9781728112947 - 9781728112961 ; , s. 1003-1007
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Cell-free Massive multiple-input multiple-output (MIMO) ensures ubiquitous communication at high spectral efficiency (SE) thanks to increased macro-diversity as compared cellular communications. However, system scalability and performance are limited by fronthauling traffic and interference. Unlike conventional precoding schemes that only suppress intra-cell interference, full-pilot zero-forcing (fpZF), introduced in [1], actively suppresses also inter-cell interference, without sharing channel state information (CSI) among the access points (APs). In this study, we derive a new closed-form expression for the downlink (DL) SE of a cell-free Massive MIMO system with multi-antenna APs and fpZF precoding, under imperfect CSI and pilot contamination. The analysis also includes max-min fairness DL power optimization. Numerical results show that fpZF significantly outperforms maximum ratio transmission scheme, without increasing the fronthauling overhead, as long as the system is sufficiently distributed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- MIMO communication
- Interference
- Precoding
- Channel estimation
- Fading channels
- Downlink
- Signal to noise ratio
- Cell-free Massive MIMO
- full-pilot zero-forcing
- downlink spectral efficiency
- max-min fairness power control
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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