| Presentation | 2020-03-04 Improving In-Band Full-Duplex Capacity by Transmitter Nonlinearization using Digital Predistortion Chua Teong Zhe, Kazuki Komatsu, Yuichi Miyaji, Hideyuki Uehara, |
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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) 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) |
| Keyword(in English) | In-band full-duplex / transmitter nonlinearities / digital predistortion / Hammerstein canceller |
| Paper # | RCS2019-338 |
| Date of Issue | 2020-02-26 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2020/3/4(3days) |
| 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 |
| Chair | Tomoaki Otsuki(Keio Univ.) / Masayuki Ariyoshi(NEC) / Satoshi Denno(Okayama Univ.) |
| Vice Chair | Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Keiichi Mizutani(Kyoto Univ.) |
| Secretary | Satoshi Suyama(NTT) / Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(ATR) / Suguru Kameda(Univ. of Electro-Comm.) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokyo Inst. of Tech.) / Keiichi Mizutani(Anritsu) |
| Assistant | Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Kentaro Kobayashi(Nagoya Univ.) / Masaaki Fuse(Anritsu) / Tomoki Murakami(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | ENG |
| 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.) |
| Date | 2020-03-04 |
| Paper # | RCS2019-338 |
| Volume (vol) | vol.119 |
| Number (no) | RCS-448 |
| Page | pp.pp.99-104(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-02-26 (RCS) |