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Paper Abstract and Keywords
Presentation 2024-06-20 09:30
Digital Self-Interference Cancellation of Over 50 dB on an In-Band Full-Duplex Experimental System with Shared LO and Low-IF Architecture
Yuto Kato, Kazuki Komatu (TUT), Yuichi Miyaji (AIT), Hideyuki Uehara (TUT) RCS2024-53
Abstract (in Japanese) (See Japanese page) 
(in English) In-band full-duplex radios simultaneously transmit and receive signals at the same frequency.
However, self-interference, in which own transmission signal interferes with the desired signal, is a problem.
To sufficiently cancel the self-interference, imperfections of radio-frequency circuits must be taken into account.
In this study, we construct an experimental system using radio-frequency circuits and software radios with shared LO and low-IF architecture, and evaluate the performance of the self-interference canceller.
The use of the shared LO architecture reduces the effects of phase noise, and the use of low-IF architecture reduces the effects of nonlinearity and DC offset.
The experimental results show that the parallel Hammerstein canceller achieves a self-interference cancellation of over 50~dB in our experimental system.
In addition, we show that the low-IF architecture reduces the number of basis functions required without significantly degrading the rejection performance of the canceller, thereby reducing the computational cost.
Keyword (in Japanese) (See Japanese page) 
(in English) In-band full-duplex / Digital self-interference cancellation / RF imperfection / Shared LO / Low-IF architecture / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 84, RCS2024-53, pp. 151-156, June 2024.
Paper # RCS2024-53 
Date of Issue 2024-06-12 (RCS) 
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 RCS2024-53

Conference Information
Committee RCS  
Conference Date 2024-06-19 - 2024-06-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2024-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Digital Self-Interference Cancellation of Over 50 dB on an In-Band Full-Duplex Experimental System with Shared LO and Low-IF Architecture 
Sub Title (in English)  
Keyword(1) In-band full-duplex  
Keyword(2) Digital self-interference cancellation  
Keyword(3) RF imperfection  
Keyword(4) Shared LO  
Keyword(5) Low-IF architecture  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yuto Kato  
1st Author's Affiliation Toyohasi University of Technology (TUT)
2nd Author's Name Kazuki Komatu  
2nd Author's Affiliation Toyohasi University of Technology (TUT)
3rd Author's Name Yuichi Miyaji  
3rd Author's Affiliation Aichi Institute of Technology (AIT)
4th Author's Name Hideyuki Uehara  
4th Author's Affiliation Toyohasi University of Technology (TUT)
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Speaker Author-1 
Date Time 2024-06-20 09:30:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2024-53 
Volume (vol) vol.124 
Number (no) no.84 
Page pp.151-156 
#Pages 6 
Date of Issue 2024-06-12 (RCS) 

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