| Presentation | 2020-12-18 Prototype of Analog Self-interference Cancellation Circuit for Multi-band Full-duplex Base Station Takeshi Matsumura, Fumihide Kojima, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | 5G (5th Generation mobile communication system) has been commercialized, and it is expected that QoE (Quality of Experi-ence) will be significantly improved by the eMBB (enhanced Mobile Broadband) technology. Meanwhile, communication traffic is continuously increasing, and thus, even if 28 GHz band is widely used, there still has a serious problem of spectrum resource shortage. Therefore, it is necessary to introduce new technologies for expanding the system capacity in B5G (Beyond 5G). The authors have researched and developed an IBFD (In-Band Full-Duplex)-based cellular system for improving spec-trum efficiency. In general, IBFD induces an SI (Self-Interference) to the receiver and degrades the communication quality. In this study, we implement an analog SI canceller in the IF (Intermediate Frequency) circuit of the IF-based RF (Radio Frequen-cy) front-end of the multi-band base station and apply IBFD to the communication in the 28 GHz band. Also, we prototype an RF front-end and evaluate the SI cancellation performance for 4.7 GHz and 28 GHz bands assuming Local 5G. |
| 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 / 28 GHz |
| Paper # | RCS2020-144 |
| Date of Issue | 2020-12-10 (RCS) |
| Conference Information | |
| Committee | NS / RCS |
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| Conference Date | 2020/12/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. |
| Chair | Akihiro Nakao(Univ. of Tokyo) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Tetsuya Oishi(NTT) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Tetsuya Oishi(NTT) / Fumiaki Maehara(Chuo Univ.) / Toshihiko Nishimura(Kyushu Univ.) / Tomoya Tandai(NEC) |
| Assistant | Shinya Kawano(NTT) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Prototype of Analog Self-interference Cancellation Circuit 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) | 28 GHz |
| 1st Author's Name | Takeshi Matsumura |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Fumihide Kojima |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2020-12-18 |
| Paper # | RCS2020-144 |
| Volume (vol) | vol.120 |
| Number (no) | RCS-298 |
| Page | pp.pp.54-59(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-12-10 (RCS) |