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Throughput optimiza...
Throughput optimization in MU-MIMO systems via exploiting bs antenna tilt
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- Seifi, Nima, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Coldrey, Mikael, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Tommy, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9781467349413
- 2012
- 2012
- Engelska.
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Ingår i: 2012 IEEE Globecom Workshops, GC Wkshps 2012. - 9781467349413 ; , s. 653-657
- Relaterad länk:
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http://dx.doi.org/10...
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visa fler...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this paper, we propose a novel framework to enhance the throughput in a single-cell multiuser multiple-input multiple-output (MU-MIMO) system via adaptive base station (BS) antenna tilting. The key idea is to partition the cell into so-called vertical regions and to apply one out of a finite number of tilt and vertical half-power beamwidth (HPBW) pairs at the BS when serving each vertical region. This strategy results in an increased average received signal-to-noise ratio (SNR) over the coverage area. A scheduler is then employed to schedule the transmission to one of the vertical regions at each time-slot with the objective to maximize a suitable utility function of users' achievable throughput. MU-MIMO zero-forcing beamforming in the horizontal plane is used at the BS to serve the users in each vertical region. Simulation results show that the proposed adaptive BS tilting scheme is a promising approach to provide a noticeable throughput gain compared to a conventional scheme employing a fixed tilt at the BS. The proposed framework also achieves a superior performance-complexity tradeoff compared to a conventional system in which the tilt can be adapted to the location of the served users at each time-slot.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- downlink
- throughput
- MIMO
- Antenna tilt
- fairness scheduling
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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