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Paper Abstract and Keywords
Presentation 2016-04-22 14:10
Multiuser Parallel Transmission by Sub Array Time Domain Beamforming on Massive MIMO using Higher Frequency Bands
Kazuki Maruta, Atsushi Ohta, Takuto Arai, Yushi Shirato, Satoshi Kurosaki, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2016-20
Abstract (in Japanese) (See Japanese page) 
(in English) Drastic improvements of transmission rate and system capacity are required towards 5th generation mobile communications (5G). As promising approaches, one is utilizing higher frequency band which remains rich spectrum resources and another is application of massive MIMO to compensate area coverage shortfall due to the large propagation loss while obtaining high order spatial multiplexing gain. With Line of Sight (LOS) dominant channel environment, multiuser (MU-) MIMO is also effective in further enhancing system capacity. Focusing on high beamforming gain provided by massive antenna array, this paper investigates feasibility of multiuser parallel transmission by sub-arrayed base station and beamforming. Each sub-array conducts the first eigenmode transmission and thus one stream is allocated per user without null-forming. This paper also employs previously proposed 1-tap time domain beamforming (TDBF) which simplifies calculation complexity of precoding.
Keyword (in Japanese) (See Japanese page) 
(in English) Massive MIMO / Sub Array / 1st Eigenmode Transmission / Time Domain Beamforming / Parallel Transmission / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 11, RCS2016-20, pp. 111-116, April 2016.
Paper # RCS2016-20 
Date of Issue 2016-04-14 (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)
Download PDF RCS2016-20

Conference Information
Committee RCS  
Conference Date 2016-04-21 - 2016-04-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Romantopia, A Landscape of Forest and Stars, Hirosaki City 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Radio Access Technologies, etc. 
Paper Information
Registration To RCS 
Conference Code 2016-04-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multiuser Parallel Transmission by Sub Array Time Domain Beamforming on Massive MIMO using Higher Frequency Bands 
Sub Title (in English)  
Keyword(1) Massive MIMO  
Keyword(2) Sub Array  
Keyword(3) 1st Eigenmode Transmission  
Keyword(4) Time Domain Beamforming  
Keyword(5) Parallel Transmission  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kazuki Maruta  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Atsushi Ohta  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Takuto Arai  
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 Satoshi Kurosaki  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
6th Author's Name Tatsuhiko Iwakuni  
6th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
7th Author's Name Masataka Iizuka  
7th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2016-04-22 14:10:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2016-20 
Volume (vol) vol.116 
Number (no) no.11 
Page pp.111-116 
#Pages 6 
Date of Issue 2016-04-14 (RCS) 

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