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Presentation 2021-03-05 17:20
[Invited Lecture] A Study on mmWave Multi-hop Analog Relay Single-User MIMO
Takumi Yoneda, Kei Sakaguchi (Tokyo Tech), Masashi Iwabuchi, Tomoki Murakami (NTT) SRW2020-83
Abstract (in Japanese) (See Japanese page) 
(in English) Millimeter-wave (mmWave) communication is a key technology to realize ultra-high data-rate and ultra-low latency wireless communications. It is expected to be applied to various use cases such as mmWave cellular networks and vehicular networks. Compared with conventional communication systems in micro-wave band such as 4G/LTE, the mmWave communication employs higher frequency band which allows a wider bandwidth and is suitable for large capacity communications. Due to the strong diffraction loss and the path loss in mmWave band, it is difficult or even impossible to achieve high channel capacity for user equipments (UEs) located in Non-Line-Of-Sight (NLOS) environments. To solve the problem, mmWave massive relay MIMO has been proposed, which enables the NLOS mmWave communications by using a massive number of analog relay stations (RSs). The transmission signals are relayed at massive RSs to form an artificial MIMO channel even in NLOS environments. In this paper, we extend the massive relay MIMO system to include multi-hop relays. Simulation experiments are conducted, and the numerical results show that the proposed system achieves extremely high data-rate.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / mmWave / Multi-hop / Analog Relay / Massive MIMO / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 406, SRW2020-83, pp. 110-115, March 2021.
Paper # SRW2020-83 
Date of Issue 2021-02-24 (SRW) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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 2021-03-03 - 2021-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SRW 
Conference Code 2021-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on mmWave Multi-hop Analog Relay Single-User MIMO 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) mmWave  
Keyword(3) Multi-hop  
Keyword(4) Analog Relay  
Keyword(5) Massive MIMO  
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1st Author's Name Takumi Yoneda  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Kei Sakaguchi  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Masashi Iwabuchi  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Tomoki Murakami  
4th Author's Affiliation NTT Corporation (NTT)
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Speaker Author-1 
Date Time 2021-03-05 17:20:00 
Presentation Time 25 minutes 
Registration for SRW 
Paper # SRW2020-83 
Volume (vol) vol.120 
Number (no) no.406 
Page pp.110-115 
#Pages
Date of Issue 2021-02-24 (SRW) 


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