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Paper Abstract and Keywords
Presentation 2014-10-16 11:20
Influence of Channel Estimation on Massive MIMO with Joint Analog Beamforming and Digital Precoding in High Frequency Bands
Satoshi Suyama, Tatsunori Obara, Jiyun Shen, Yukihiko Okumura (NTT DOCOMO) RCS2014-166
Abstract (in Japanese) (See Japanese page) 
(in English) In order to tackle rapidly increasing traffic, 5th generation (5G) radio access network in mobile communications introduces small cells using higher frequency bands to expand channel capacity, and aims to achieve super high bit rate transmission realizing several tens Gbps by using Massive MIMO. In our previous work, to simplify the Massive MIMO transceiver, joint fixed beamforming (BF) and channel state information (CSI)-based precoding (FBCP) has been proposed as one of hybrid BF schemes that combine the analog BF with the digital precoding for Massive MIMO transmission using higher frequency bands. In this report, we propose a channel estimation method for the FBCP and evaluate influences of the channel estimation method by link level simulations using 256-element uniform planar array, and the simulation results show that the FBCP with the channel estimation can achieve more than 20 Gbps throughput by using 20 GHz band and 400 MHz bandwidth.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / Higher frequency bands / Massive MIMO / Analog beamforming / Digital precoding / Channel estimation / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 254, RCS2014-166, pp. 61-66, Oct. 2014.
Paper # RCS2014-166 
Date of Issue 2014-10-09 (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 RCS2014-166

Conference Information
Committee RCS  
Conference Date 2014-10-16 - 2014-10-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Keio Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of Channel Estimation on Massive MIMO with Joint Analog Beamforming and Digital Precoding in High Frequency Bands 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) Higher frequency bands  
Keyword(3) Massive MIMO  
Keyword(4) Analog beamforming  
Keyword(5) Digital precoding  
Keyword(6) Channel estimation  
Keyword(7)  
Keyword(8)  
1st Author's Name Satoshi Suyama  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Tatsunori Obara  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Jiyun Shen  
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 2014-10-16 11:20:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2014-166 
Volume (vol) vol.114 
Number (no) no.254 
Page pp.61-66 
#Pages 6 
Date of Issue 2014-10-09 (RCS) 

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