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Paper Abstract and Keywords
Presentation 2008-03-06 13:20
Base Station Cooperation Null-Beamforing for Spectrum Sharing between Next Generation Cellular and Fixed Satellite Systems
Ian Dexter Garcia, David Chanin, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.), Tomohiro Sugawara, Takayuki Sotoyama (Panasonic Mobile Communications), Takashi Fukagawa (Matsushita Electric Industrial) SR2007-90
Abstract (in Japanese) (See Japanese page) 
(in English) 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.
Keyword (in Japanese) (See Japanese page) 
(in English) Spectrum Sharing / Base Station Cooperation / Null-Beamforming / Next Generation Cellular / Fixed Satellite Service / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 519, SR2007-90, pp. 33-38, March 2008.
Paper # SR2007-90 
Date of Issue 2008-02-28 (SR) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee RCS AN MoNA SR WBS  
Conference Date 2008-03-05 - 2008-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SR 
Conference Code 2008-03-RCS-AN-MoMuC-SR-WBS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Base Station Cooperation Null-Beamforing for Spectrum Sharing between Next Generation Cellular and Fixed Satellite Systems 
Sub Title (in English)  
Keyword(1) Spectrum Sharing  
Keyword(2) Base Station Cooperation  
Keyword(3) Null-Beamforming  
Keyword(4) Next Generation Cellular  
Keyword(5) Fixed Satellite Service  
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1st Author's Name Ian Dexter Garcia  
1st Author's Affiliation Tokyo Insititute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name David Chanin  
2nd Author's Affiliation Tokyo Insititute of Technology (Tokyo Inst. of Tech.)
3rd Author's Name Kei Sakaguchi  
3rd Author's Affiliation Tokyo Insititute of Technology (Tokyo Inst. of Tech.)
4th Author's Name Kiyomichi Araki  
4th Author's Affiliation Tokyo Insititute of Technology (Tokyo Inst. of Tech.)
5th Author's Name Tomohiro Sugawara  
5th Author's Affiliation Panasonic Mobile Communications R&D Lab. Co., Ltd. (Panasonic Mobile Communications)
6th Author's Name Takayuki Sotoyama  
6th Author's Affiliation Panasonic Mobile Communications R&D Lab. Co., Ltd. (Panasonic Mobile Communications)
7th Author's Name Takashi Fukagawa  
7th Author's Affiliation Network Department Center,Matsushita Electric Industrial Co., Lt (Matsushita Electric Industrial)
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Speaker Author-1 
Date Time 2008-03-06 13:20:00 
Presentation Time 20 minutes 
Registration for SR 
Paper # SR2007-90 
Volume (vol) vol.107 
Number (no) no.519 
Page pp.33-38 
#Pages
Date of Issue 2008-02-28 (SR) 


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