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Paper Abstract and Keywords
Presentation 2022-01-24 13:30
[Invited Talk] 10GbE fiber transmission 7.5GHz-band DBF using 1-bit direct digital RF transmitter
Noriharu Suematsu, Ryo Tamura, Mizuki Motoyoshi, Suguru Kameda (Tohoku Univ) SR2021-61
Abstract (in Japanese) (See Japanese page) 
(in English) In DBF system, large number of element antennas should have each transceivers. The transceiver can be separated to an outdoor unit (antenna module which includes antenna and RF section) and indoor unit (DSP). In the case of large scale DBF, the coaxial cable connection between outdoor unit and indoor unit becomes a problem. In order to solve this problem, GbE optical fiber connection is introduced together with direct digital RF transmitter. By using 10GbE fiber system, 7.5GHz 4-elements DBF system has been developed and demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) DIgital RF / Microwaves / Millimeter-waves / Satellite communication / 5G / DBF / Transmitters / m-MIMO  
Reference Info. IEICE Tech. Rep., vol. 121, no. 345, SR2021-61, pp. 12-16, Jan. 2022.
Paper # SR2021-61 
Date of Issue 2022-01-17 (SR) 
ISSN 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)
Download PDF SR2021-61

Conference Information
Committee SR  
Conference Date 2022-01-24 - 2022-01-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SR 
Conference Code 2022-01-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 10GbE fiber transmission 7.5GHz-band DBF using 1-bit direct digital RF transmitter 
Sub Title (in English)  
Keyword(1) DIgital RF  
Keyword(2) Microwaves  
Keyword(3) Millimeter-waves  
Keyword(4) Satellite communication  
Keyword(5) 5G  
Keyword(6) DBF  
Keyword(7) Transmitters  
Keyword(8) m-MIMO  
1st Author's Name Noriharu Suematsu  
1st Author's Affiliation Tohoku University (Tohoku Univ)
2nd Author's Name Ryo Tamura  
2nd Author's Affiliation Tohoku University (Tohoku Univ)
3rd Author's Name Mizuki Motoyoshi  
3rd Author's Affiliation Tohoku University (Tohoku Univ)
4th Author's Name Suguru Kameda  
4th Author's Affiliation Tohoku University (Tohoku Univ)
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Speaker Author-1 
Date Time 2022-01-24 13:30:00 
Presentation Time 50 minutes 
Registration for SR 
Paper # SR2021-61 
Volume (vol) vol.121 
Number (no) no.345 
Page pp.12-16 
#Pages 5 
Date of Issue 2022-01-17 (SR) 

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