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Paper Abstract and Keywords
Presentation 2015-06-24 16:35
Performance Evaluation of Hybrid Beamforming Scheme for Multiuser Massive MIMO Transmission in High Frequency Bands
Tatsuki Okuyama, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura (NTT DOCOMO) RCS2015-55
Abstract (in Japanese) (See Japanese page) 
(in English) For the realization of a 5G wireless access network with super high bit rate and capacity, massive MIMO is introduced into small cells using higher frequency bands, and super high bit rate transmission with more than 10 Gbps data rate has been investigated. In massive MIMO, from the point of view of realization, hybrid beamforming(BF) that combines analog BF with digital precoding has been proposed, and joint processing of analog fixed BF and channel state information (CSI)-based precoding (FBCP) can achieve a throughput of more than 20 Gbps by using 400 MHz bandwidth in the 20 GHz band under single user (SU) environment. In this report, we extend the FBCP for multiuser (MU) transmission and show the optimum BF weight search interval and the optimum number of beams. Furthermore, we also show the influence of the number of users and received antennas over 10 Gbps data rate.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / Higher frequecy bands / Massive MIMO / Hybrid beamforming / Multiuser / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 113, RCS2015-55, pp. 55-60, June 2015.
Paper # RCS2015-55 
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) Performance Evaluation of Hybrid Beamforming Scheme for Multiuser Massive MIMO Transmission in High Frequency Bands 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) Higher frequecy bands  
Keyword(3) Massive MIMO  
Keyword(4) Hybrid beamforming  
Keyword(5) Multiuser  
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Keyword(7)  
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1st Author's Name Tatsuki Okuyama  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Satoshi Suyama  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Tatsunori Obara  
3rd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
4th Author's Name Yukihiko Okumura  
4th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2015-06-24 16:35:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2015-55 
Volume (vol) vol.115 
Number (no) no.113 
Page pp.55-60 
#Pages 6 
Date of Issue 2015-06-17 (RCS) 

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