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Paper Abstract and Keywords
Presentation 2020-03-04 11:35
Improving In-Band Full-Duplex Capacity by Transmitter Nonlinearization using Digital Predistortion
Chua Teong Zhe, Kazuki Komatsu, Yuichi Miyaji, Hideyuki Uehara (Toyohashi Univ. of Tech.) RCS2019-338
Abstract (in Japanese) (See Japanese page) 
(in English) In-band full-duplex (IBFD) is expected to have higher throughput or spectral efficiency compared to conventional wireless communication schemes. However, as IBFD uses the same frequency band to transmit and receive at the same time, the transmitted signal of a device is received as self-interference (SI) at the same device. In order to realize IBFD systems, SI must be cancelled sufficiently so that the desired signal from the communicating device can be demodulated correctly. In this technical report, we focus on SI cancellation in the digital domain and propose the introduction of transmitter nonlinearities using digital predistortion in order to improve the self-interference cancellation ratio of Hammerstein cancellers and consequently the full-duplex capacity of IBFD systems. Simulation results show that coupling a fifth order Hammerstein canceller with a nonlinearizing predistorter increases the self-interference cancellation ratio and the full-duplex capacity of the system when compared to the case of coupling with a linearizing predistorter or when there is no predistorter. We also show the potential to further increase full-duplex capacity by operating the transmitter at a lower backoff, but at the cost of increasing the nonlinear components of the transmitted signal.
Keyword (in Japanese) (See Japanese page) 
(in English) In-band full-duplex / transmitter nonlinearities / digital predistortion / Hammerstein canceller / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 448, RCS2019-338, pp. 99-104, March 2020.
Paper # RCS2019-338 
Date of Issue 2020-02-26 (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 RCS2019-338

Conference Information
Committee RCS SR SRW  
Conference Date 2020-03-04 - 2020-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2020-03-RCS-SR-SRW 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improving In-Band Full-Duplex Capacity by Transmitter Nonlinearization using Digital Predistortion 
Sub Title (in English)  
Keyword(1) In-band full-duplex  
Keyword(2) transmitter nonlinearities  
Keyword(3) digital predistortion  
Keyword(4) Hammerstein canceller  
1st Author's Name Chua Teong Zhe  
1st Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
2nd Author's Name Kazuki Komatsu  
2nd Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
3rd Author's Name Yuichi Miyaji  
3rd Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
4th Author's Name Hideyuki Uehara  
4th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
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Date Time 2020-03-04 11:35:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2019-338 
Volume (vol) IEICE-119 
Number (no) no.448 
Page pp.99-104 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2020-02-26 

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