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Paper Abstract and Keywords
Presentation 2018-03-01 11:10
Performance Evaluation of Digital Beamforming by Outdoor Trials for 5G Massive MIMO in Low SHF Bands
Tatsuki Okuyama (NTT DOCOMO), Kohei Izui, Kenichiro Yamazaki (NEC), Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2017-352
Abstract (in Japanese) (See Japanese page) 
(in English) The fifth-generation (5G) mobile communication system has attracted much attention to provide various kinds of mobile services and applications for 2020 and beyond. Massive MIMO in high frequency bands is well known as promising technology to increase both system capacity and data rates dramatically. Massive MIMO can compensate for radio propagation loss by beamforming (BF) and increase frequency efficiency by MIMO spatial-division-multiplexing to multiple user equipment. BF algorithm suitable for each frequency has been studied. Although Massive MIMO has been studied in several frequency bands, this paper focuses on low SHF bands (3-6 GHz). Recently works have been shown performances of digital BF algorithms and propagation trials on low SHF bands. However, transmission performances using experimental equipment have not been clarified enough. Therefore, we developed fully digital Massive MIMO equipment using 4.65 GHz band and this paper shows an effectiveness of fully digital Massive MIMO by measuring coverage and four user multiplexing throughput in actual environment.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / Low SHF band / Digital Beamforming / Outdoor Transmission Trials / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 456, RCS2017-352, pp. 203-208, Feb. 2018.
Paper # RCS2017-352 
Date of Issue 2018-02-21 (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)
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Conference Information
Committee RCS SR SRW  
Conference Date 2018-02-28 - 2018-03-02 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2018-02-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluation of Digital Beamforming by Outdoor Trials for 5G Massive MIMO in Low SHF Bands 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) Low SHF band  
Keyword(3) Digital Beamforming  
Keyword(4) Outdoor Transmission Trials  
Keyword(5)  
Keyword(6)  
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1st Author's Name Tatsuki Okuyama  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Kohei Izui  
2nd Author's Affiliation NEC Corporation (NEC)
3rd Author's Name Kenichiro Yamazaki  
3rd Author's Affiliation NEC Corporation (NEC)
4th Author's Name Satoshi Suyama  
4th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
5th Author's Name Jun Mashino  
5th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
6th Author's Name Yukihiko Okumura  
6th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2018-03-01 11:10:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2017-352 
Volume (vol) vol.117 
Number (no) no.456 
Page pp.203-208 
#Pages 6 
Date of Issue 2018-02-21 (RCS) 

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