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Paper Abstract and Keywords
Presentation 2019-10-25 10:20
28-GHz Band 5G Downlink Throughput Enhancement Using Reflectarray with Variable Phase Shifter
Yuta Takahashi (NTT Docomo Inc.), Yuta Takahashi (Iwate Univ.), Junichi Abe, Kazushi Muraoka, Satoshi Suyama, Yuji Aburakawa (NTT Docomo Inc.) RCS2019-194
Abstract (in Japanese) (See Japanese page) 
(in English) SHF band (3 to 30 GHz) radio waves, used for fifth-generation (5G) mobile communication systems, has an issue to establish transmission quality by path loss increase due to shadowing and less radio wave diffraction. A reflectarray with variable phase shifter is one of technologies that improves the transmission quality. The reflectarray can optimize the radio transmission paths to enhance throughput by controlling phase shifter on each reflector element. This report proposes new simple algorithm to set the values on all of phase shifter uniquely, which is used to be done based on exhaustive search. Furthermore, it shows simulation results with the proposed algorithm by the link level simulation under 5G downlink MIMO-OFDM channels in the 28 GHz band. And also shows 3.1 Gbps (3.4 times improvement) of throughput in SNR (Signal-to-Noise Ratio) of -3dB condition.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / Massive Antenna / MIMO / Reflector / Array element / Phase shifter / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 244, RCS2019-194, pp. 89-94, Oct. 2019.
Paper # RCS2019-194 
Date of Issue 2019-10-17 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 RCS2019-194

Conference Information
Committee RCS  
Conference Date 2019-10-24 - 2019-10-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Yokosuka Research Park 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2019-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 28-GHz Band 5G Downlink Throughput Enhancement Using Reflectarray with Variable Phase Shifter 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) Massive Antenna  
Keyword(3) MIMO  
Keyword(4) Reflector  
Keyword(5) Array element  
Keyword(6) Phase shifter  
1st Author's Name Yuta Takahashi  
1st Author's Affiliation NTT Docomo (NTT Docomo Inc.)
2nd Author's Name Yuta Takahashi  
2nd Author's Affiliation Iwate University (Iwate Univ.)
3rd Author's Name Junichi Abe  
3rd Author's Affiliation NTT Docomo (NTT Docomo Inc.)
4th Author's Name Kazushi Muraoka  
4th Author's Affiliation NTT Docomo (NTT Docomo Inc.)
5th Author's Name Satoshi Suyama  
5th Author's Affiliation NTT Docomo (NTT Docomo Inc.)
6th Author's Name Yuji Aburakawa  
6th Author's Affiliation NTT Docomo (NTT Docomo Inc.)
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Date Time 2019-10-25 10:20:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2019-194 
Volume (vol) IEICE-119 
Number (no) no.244 
Page pp.89-94 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2019-10-17 

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