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Downlink Power Cont...
Downlink Power Control in Massive MIMO Networks with Distributed Antenna Arrays
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- Akbar, Noman (författare)
- Australian Natl Univ, Res Sch Engn, GPO Box 4, Acton, ACT 2601, Australia.
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- Björnson, Emil, Professor, 1983- (författare)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten
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- Larsson, Erik G (författare)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten
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- Yang, Nan (författare)
- Australian Natl Univ, Res Sch Engn, GPO Box 4, Acton, ACT 2601, Australia.
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Australian Natl Univ, Res Sch Engn, GPO Box 4, Acton, ACT 2601, Australia Kommunikationssystem (creator_code:org_t)
- IEEE, 2018
- 2018
- Engelska.
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Ingår i: 2018 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC). - : IEEE. - 9781538631805 - 9781538631812
- Relaterad länk:
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- In this paper, we investigate downlink power control in massive multiple-input multiple-output (MIMO) networks with distributed antenna arrays. The base station (BS) in each cell consists of multiple antenna arrays, which are deployed in arbitrary locations within the cell. Due to the spatial separation between antenna arrays, the large-scale propagation effect is different from a user to different antenna arrays in a cell, which makes power control a challenging problem as compared to conventional massive MIMO. We assume that the BS in each cell obtains the channel estimates via uplink pilots. Based on the channel estimates, the BSs perform maximum ratio transmission for the downlink. We then derive a closed-form spectral efficiency (SE) expression, where the channels are subject to correlated fading. Utilizing the derived expression, we propose a max-min power control algorithm to ensure that each user in the network receives a uniform quality of service. Numerical results demonstrate that, for the network considered in this work, optimizing for max-min SE through the max-min power control improves the sum SE of the network as compared to the equal power allocation.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
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