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| Presentation | 2022-01-21 10:55 Performance Evaluation of Analog Self-interference Cancellation Circuit in Combination with Antenna for Multi-band Full-duplex Base Station Takeshi Matsumura (NICT)  IT2021-74 SIP2021-82 RCS2021-242 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In-band full-duplex (IBFD) wireless communication is expected as a technology that ideally doubles the spectrum efficiency, while simultaneous transmission and reception at the same frequency induces self-interference (SI) and significantly degrades communication quality. The author proposed an architecture of a multi-band full-duplex base station composed of a common intermediate frequency (IF) band, and the SI cancellation is performed for different frequency bands by implementing a com-mon analog SI cancellation circuit in the IF circuit. Also, the author prototyped a radio frequency (RF) front-end based on this architecture and reported that the SI signal can be reduced by more than 30 dB. In this paper, two-elements integrated antennas for 3.7 GHz and 4.7 GHz bands with an isolation of more than 30 dB are connected to the RF front-end, and a total SI cancellation performance in the analog domain is evaluated in an anechoic chamber. Experiments are performed under different antenna placement conditions, such as placement on an aluminum plate, and it is confirmed that an SI cancellation performance of more than 60 dB can be obtained by combining the antenna and the RF front-end regardless of the conditions. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Beyond 5G / IBFD (In-Band Full-Duplex) / Local 5G / Self-interference cancellation circuit / Multi-band / Sub-6 GHz / RF circuit / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 329, RCS2021-242, pp. 258-263, Jan. 2022. | |
| Paper # | RCS2021-242 | |
| Date of Issue | 2022-01-13 (IT, SIP, 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 | IT2021-74 SIP2021-82 RCS2021-242 |
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| Conference Information | |
| Committee | RCS SIP IT |
| Conference Date | 2022-01-20 - 2022-01-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2022-01-RCS-SIP-IT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Evaluation of Analog Self-interference Cancellation Circuit in Combination with Antenna for Multi-band Full-duplex Base Station |
| Sub Title (in English) | |
| Keyword(1) | Beyond 5G |
| Keyword(2) | IBFD (In-Band Full-Duplex) |
| Keyword(3) | Local 5G |
| Keyword(4) | Self-interference cancellation circuit |
| Keyword(5) | Multi-band |
| Keyword(6) | Sub-6 GHz |
| Keyword(7) | RF circuit |
| Keyword(8) | |
| 1st Author's Name | Takeshi Matsumura |
| 1st Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2022-01-21 10:55:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | IT2021-74, SIP2021-82, RCS2021-242 |
| Volume (vol) | vol.121 |
| Number (no) | no.327(IT), no.328(SIP), no.329(RCS) |
| Page | pp.258-263 |
| #Pages | 6 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |
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