Base station cooperation null-beamforming for spectrum sharing between next generation cellular and fixed satellite systems (ソフトウェア無線)
スポンサーリンク
概要
- 論文の詳細を見る
Base station cooperation (BSC) transmission (i.e. multicell transmission, cooperative transmission) has been shown to significantly increase average and cell-edge throughputs compared to conventional single-cell transmission. In this paper, we extend BSC techniques to cooperatively force full or partial nulls at victim receiver antennas (e.g. Fixed Service Satellite Earth Station or ES) while providing cooperative stream transmission to intended receivers (e.g. Next Generation Cellular user terminals). First, we express null-beamforming (NB) spectrum sharing as a constrained optimization problem where the objective is to maximize capacity or coverage of the intended system and the constraints are the BS transmit powers and intersystem interference levels. We then introduce single-cell null-beamforming (SC-NB), linear BSC-NB, and non-linear BSC-NB algorithms. Finally, we test these algorithms on a 2x2 MIMO, 2-cell, IMT-Advanced physical layer model and show their significant increases in capacity and coverage over a power-control scheme and single-cell null-beamforming schemes.
- 社団法人電子情報通信学会の論文
- 2008-02-28
著者
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ARAKI Kiyomichi
Tokyo Institute of Technology
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Araki Kiyomichi
Graduate School Of Engineering Tokyo Institute Of Technology
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Araki Kiyomichi
Tokyo Inst. Of Technol. Tokyo Jpn
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Sugawara Tomohiro
Panasonic Mobile Communications R&d Lab. Co. Ltd.
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Garcia Ian
Tokyo Institute Of Technology
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SAKAGUCHI Kei
Tokyo Institute of Technology
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Fukagawa Takashi
Network Department Center Matsushita Electric Industrial Co. Ltd.
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Chanin David
Tokyo Institute of Technology
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Sotoyama Takayuki
Communication System Department Center, Panasonic Mobile Communications Co. Ltd.
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Sakaguchi K
Graduate School Of Engineering Tokyo Institute Of Technology
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Sakaguchi Kei
Tokyo Inst. Of Technol. Tokyo Jpn
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Sakaguchi Kei
Department Of Electrical And Electronic Engineering Graduate School Of Science And Engineering Tokyo
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Araki Kiyomichi
Department Of Electrical And Electronic Engineering Graduate School Of Science And Engineering Tokyo
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Sotoyama Takayuki
Communication System Department Center Panasonic Mobile Communications Co. Ltd.
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ARAKI Kiyomichi
the Tokyo Institute of Technology
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