| Presentation | 2022-01-21 Performance Evaluation of Analog Self-interference Cancellation Circuit in Combination with Antenna for Multi-band Full-duplex Base Station Takeshi Matsumura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Beyond 5G / IBFD (In-Band Full-Duplex) / Local 5G / Self-interference cancellation circuit / Multi-band / Sub-6 GHz / RF circuit |
| Paper # | IT2021-74,SIP2021-82,RCS2021-242 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |
| Conference Information | |
| Committee | RCS / SIP / IT |
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| Conference Date | 2022/1/20(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Yukihiro Bandou(NTT) / Tadashi Wadayama(Nagoya Inst. of Tech.) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) / Takayuki Nakachi(Ryukyu Univ.) / Tetsuya Kojima(Tokyo Kosen) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Xiaomi) / Toshihisa Tanaka(Takushoku Univ.) / Takayuki Nakachi(Tokyo Univ. Agri.&Tech.) / Tetsuya Kojima(Saitamai Univ.) |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Taichi Yoshida(UEC) / Seisuke Kyochi(Univ. of Kitakyushu) / Masanori Hirotomo(Saga Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Signal Processing / Technical Committee on Information Theory |
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| Language | JPN |
| 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 |
| 1st Author's Name | Takeshi Matsumura |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2022-01-21 |
| Paper # | IT2021-74,SIP2021-82,RCS2021-242 |
| Volume (vol) | vol.121 |
| Number (no) | IT-327,SIP-328,RCS-329 |
| Page | pp.pp.258-263(IT), pp.258-263(SIP), pp.258-263(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |