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Paper Abstract and Keywords
Presentation 2015-06-24 16:10
Effective Use of Spatial Dimension for Inter-user Interference suppression on Multiuser Massive MIMO under Time Varying Channel Environment
Atsushi Ohta, Tatsuhiko Iwakuni, Kazuki Maruta, Yushi Shirato, Takuto Arai, Masataka Iizuka (NTT) RCS2015-54
Abstract (in Japanese) (See Japanese page) 
(in English) The authors have proposed the Inter-user Interference (IUI) suppression scheme on Multiuser Massive MIMO which utilizes the excess degrees of freedom on the massive antenna systems and employs redundant null beam forming. Though the good IUI suppression performance of the proposed scheme has been confirmed, it has been also clarified that its desired signal loss caused by the redundant null beam-firming is slightly greater than the theoretical value. In this paper, we firstly evaluate the effective degrees of freedom for MIMO channel vectors where the concrete BS antenna arrangements are assumed. In addition, we discuss the way for effective approach of IUI suppression with the relationship between BS antenna arrangements and its characteristic of channel vector space.
Keyword (in Japanese) (See Japanese page) 
(in English) Massive MIMO / Multiuser MIMO / Time Varying Channel / Null-Space Expansion / Degree of Freedom / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 113, RCS2015-54, pp. 49-54, June 2015.
Paper # RCS2015-54 
Date of Issue 2015-06-17 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction
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  
Conference Date 2015-06-24 - 2015-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2015-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effective Use of Spatial Dimension for Inter-user Interference suppression on Multiuser Massive MIMO under Time Varying Channel Environment 
Sub Title (in English)  
Keyword(1) Massive MIMO  
Keyword(2) Multiuser MIMO  
Keyword(3) Time Varying Channel  
Keyword(4) Null-Space Expansion  
Keyword(5) Degree of Freedom  
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1st Author's Name Atsushi Ohta  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Tatsuhiko Iwakuni  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Kazuki Maruta  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Yushi Shirato  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Takuto Arai  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
6th Author's Name Masataka Iizuka  
6th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2015-06-24 16:10:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2015-54 
Volume (vol) vol.115 
Number (no) no.113 
Page pp.49-54 
#Pages
Date of Issue 2015-06-17 (RCS) 


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