A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

Yuki NAKANISHI; Toshihiko NISHIMURA; Takeo OHGANE; Yasutaka OGAWA; Yusuke OHWATARI; Yoshihisa KISHIYAMA

doi:10.1587/transcom.E98.B.1465

A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources

Yuki NAKANISHI, Toshihiko NISHIMURA, Takeo OHGANE, Yasutaka OGAWA, Yusuke OHWATARI, Yoshihisa KISHIYAMA

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A distributed antenna system, where the antennas of a base station are spatially distributed throughout the cell, can achieve better throughput at the cell edge than a centralized antenna system. On the other hand, the peak throughput degrades in general because each remote antenna unit has only a few antennas. To achieve both high peak and cell-edge throughputs, we need to increase the total number of antennas. However, this is not easy due to the pilot resource limitation when we use frequency division duplexing. In this paper, we propose using more antennas than pilot resources. The number mismatch between antennas and signals is solved by using a connection matrix. Here, we test two types of connection matrix: signal-distributing and signal-switching. Simulation results show that the sum throughput is improved by increasing the number of antenna elements per remote antenna unit under a constraint on the same number of pilot resources.

Publication: IEICE TRANSACTIONS on Communications Vol.E98-B No.8 pp.1465-1473

Publication Date: 2015/08/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E98.B.1465

Type of Manuscript: Special Section PAPER (Special Section on 5G Radio Access Networks―Part I: Radio Access Technologies and System Design)

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Authors

Yuki NAKANISHI
  Hokkaido University
Toshihiko NISHIMURA
  Hokkaido University
Takeo OHGANE
  Hokkaido University
Yasutaka OGAWA
  Hokkaido University
Yusuke OHWATARI
  NTT DOCOMO, INC.
Yoshihisa KISHIYAMA
  NTT DOCOMO, INC.

Keyword

distributed antenna system, multiuser MIMO system, throughput, pilot resource

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Yuki NAKANISHI, Toshihiko NISHIMURA, Takeo OHGANE, Yasutaka OGAWA, Yusuke OHWATARI, Yoshihisa KISHIYAMA, "A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources" in IEICE TRANSACTIONS on Communications, vol. E98-B, no. 8, pp. 1465-1473, August 2015, doi: 10.1587/transcom.E98.B.1465.
Abstract: A distributed antenna system, where the antennas of a base station are spatially distributed throughout the cell, can achieve better throughput at the cell edge than a centralized antenna system. On the other hand, the peak throughput degrades in general because each remote antenna unit has only a few antennas. To achieve both high peak and cell-edge throughputs, we need to increase the total number of antennas. However, this is not easy due to the pilot resource limitation when we use frequency division duplexing. In this paper, we propose using more antennas than pilot resources. The number mismatch between antennas and signals is solved by using a connection matrix. Here, we test two types of connection matrix: signal-distributing and signal-switching. Simulation results show that the sum throughput is improved by increasing the number of antenna elements per remote antenna unit under a constraint on the same number of pilot resources.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.1465/_p

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@ARTICLE{e98-b_8_1465,
author={Yuki NAKANISHI, Toshihiko NISHIMURA, Takeo OHGANE, Yasutaka OGAWA, Yusuke OHWATARI, Yoshihisa KISHIYAMA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources},
year={2015},
volume={E98-B},
number={8},
pages={1465-1473},
abstract={A distributed antenna system, where the antennas of a base station are spatially distributed throughout the cell, can achieve better throughput at the cell edge than a centralized antenna system. On the other hand, the peak throughput degrades in general because each remote antenna unit has only a few antennas. To achieve both high peak and cell-edge throughputs, we need to increase the total number of antennas. However, this is not easy due to the pilot resource limitation when we use frequency division duplexing. In this paper, we propose using more antennas than pilot resources. The number mismatch between antennas and signals is solved by using a connection matrix. Here, we test two types of connection matrix: signal-distributing and signal-switching. Simulation results show that the sum throughput is improved by increasing the number of antenna elements per remote antenna unit under a constraint on the same number of pilot resources.},
keywords={},
doi={10.1587/transcom.E98.B.1465},
ISSN={1745-1345},
month={August},}

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TY - JOUR
TI - A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources
T2 - IEICE TRANSACTIONS on Communications
SP - 1465
EP - 1473
AU - Yuki NAKANISHI
AU - Toshihiko NISHIMURA
AU - Takeo OHGANE
AU - Yasutaka OGAWA
AU - Yusuke OHWATARI
AU - Yoshihisa KISHIYAMA
PY - 2015
DO - 10.1587/transcom.E98.B.1465
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2015
AB - A distributed antenna system, where the antennas of a base station are spatially distributed throughout the cell, can achieve better throughput at the cell edge than a centralized antenna system. On the other hand, the peak throughput degrades in general because each remote antenna unit has only a few antennas. To achieve both high peak and cell-edge throughputs, we need to increase the total number of antennas. However, this is not easy due to the pilot resource limitation when we use frequency division duplexing. In this paper, we propose using more antennas than pilot resources. The number mismatch between antennas and signals is solved by using a connection matrix. Here, we test two types of connection matrix: signal-distributing and signal-switching. Simulation results show that the sum throughput is improved by increasing the number of antenna elements per remote antenna unit under a constraint on the same number of pilot resources.
ER -