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Paper Abstract and Keywords
Presentation 2015-11-04 12:15
Transmission Performance Evaluation of Multiuser Massive MIMO Null-Space Expansion for Time Varying Channel
Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka (NTT) RCS2015-198
Abstract (in Japanese) (See Japanese page) 
(in English) Inter-user interference (IUI) caused by channel time variation reduces multiuser MIMO transmission capacity. Massive MIMO null-space expansion was proposed to suppress it. This paper further investigates IUI suppression performance of null-space expansion by focusing propagation parameters such as K factor and angular spread which affect channel correlation. The vector space of channel time variation is evaluated by using singular value decomposition. IUI suppression via null-space expansion becomes effective in LoS (Line-of-Sight) dominant channel environment, which provides limited vector space of channel time variation.
Keyword (in Japanese) (See Japanese page) 
(in English) Massive MIMO / Channel Time Variation / Inter-User Interference / Null-Space Expansion / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 288, RCS2015-198, pp. 49-54, Nov. 2015.
Paper # RCS2015-198 
Date of Issue 2015-10-28 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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)
Download PDF RCS2015-198

Conference Information
Committee AP RCS WPT SAT  
Conference Date 2015-11-04 - 2015-11-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Prefectural Museum & Art Museum 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antenna and Propagation, Radio Communication, Satelite Communication, Wireless Power Transfer 
Paper Information
Registration To RCS 
Conference Code 2015-11-AP-RCS-WPT-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Transmission Performance Evaluation of Multiuser Massive MIMO Null-Space Expansion for Time Varying Channel 
Sub Title (in English)  
Keyword(1) Massive MIMO  
Keyword(2) Channel Time Variation  
Keyword(3) Inter-User Interference  
Keyword(4) Null-Space Expansion  
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1st Author's Name Tatsuhiko Iwakuni  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Kazuki Maruta  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Atsushi Ohta  
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 2015-11-04 12:15:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2015-198 
Volume (vol) vol.115 
Number (no) no.288 
Page pp.49-54 
#Pages 6 
Date of Issue 2015-10-28 (RCS) 

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