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

Nakanishi, Yuki; Nishimura, Toshihiko; Ohgane, Takeo; Ogawa, Yasutaka; Ohwatari, Yusuke; Kishiyama, Yoshihisa

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

Nakanishi, Yuki; Nishimura, Toshihiko; Ohgane, Takeo et al.

IEICE transactions on communications, 2015, E98B(8), 1465-1473

Permalink : https://hdl.handle.net/2115/59898

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アクセス権	open access
URI	https://hdl.handle.net/2115/59898
タイトル	A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources
著者	Nakanishi, Yuki ; Nishimura, Toshihiko ; Ohgane, Takeo ; Ogawa, Yasutaka ; Ohwatari, Yusuke ; Kishiyama, Yoshihisa
著者名 Nakanishi, Yuki
e-Rad_Researcher 70301934 著者名 Nishimura, Toshihiko
e-Rad_Researcher 10271636 著者名 Ohgane, Takeo
e-Rad_Researcher 70125293 著者名 Ogawa, Yasutaka
著者名 Ohwatari, Yusuke
著者名 Kishiyama, Yoshihisa
言語	英語
キーワード	distributed antenna system
	multiuser MIMO system
	throughput
	pilot resource
発行日	2015-08
出版者	The Institute of Electronics, Information and Communication Engineers (IEICE)
収録物名	IEICE transactions on communications
巻(号)	E98B(8)
ページ	1465-1473
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	copyright©2015 IEICE
PISSN	1745-1345
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1587/transcom.E98.B.1465