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Pilot Assignment fo...
Pilot Assignment for Joint Uplink-Downlink Spectral Efficiency Enhancement in Massive MIMO Systems with Spatial Correlation
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- Nguyen, T. H. (författare)
- Hanoi Univ Sci & Technol, Vietnam
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- Chien, T. V. (författare)
- Hanoi Univ Sci & Technol HUST, Vietnam; Univ Luxembourg, Luxembourg
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- Ngo, H. Q. (författare)
- Queens Univ Belfast, North Ireland
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- Tran, X. N. (författare)
- Le Quy Don Tech Univ, Vietnam
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- Björnson, Emil, Professor, 1983- (författare)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten,Dept Comp Sci, Sweden
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers Inc. 2021
- 2021
- Engelska.
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Ingår i: IEEE Transactions on Vehicular Technology. - : Institute of Electrical and Electronics Engineers Inc.. - 0018-9545 .- 1939-9359. ; 70:8, s. 8292-8297
- Relaterad länk:
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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
- This paper proposes a flexible pilot assignment method to jointly optimize the uplink and downlink data transmission in multi-cell Massive multiple input multiple output (MIMO) systems with correlated Rayleigh fading channels. By utilizing a closed-form expression of the ergodic spectral efficiency (SE) achieved with maximum ratio processing, we formulate an optimization problem for maximizing the minimum weighted sum of the uplink and downlink SEs subject to the transmit powers and pilot assignment sets. This combinatiorial optimization problem is solved by two sequential algorithms: a heuristic pilot assignment is first proposed to obtain a good pilot reuse set and the data power control is then implemented. Numerical results manifest that the proposed algorithm converges fast to a better minimum sum SE per user than the algorithms in previous works.
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
- Massive MIMO
- max-min fairness optimization
- pilot assignment
- Combinatorial optimization
- Efficiency
- Fading channels
- Heuristic algorithms
- Optimization
- Power control
- Rayleigh fading
- Closed-form expression
- Combinatorial optimization problems
- Correlated Rayleigh fading channels
- Ergodic spectral efficiencies
- Massive multiple-input- multiple-output system (MIMO)
- Optimization problems
- Sequential algorithm
- Spectral efficiencies
- MIMO systems
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- art (ämneskategori)
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