Presentation 2020-12-17
Improvement of EVM for Downlink NOMA with Blind Nonlinear Compensation Scheme in Frequency Selective Channel
Jun Nagai, Yasushi Yamao, Koji Ishibashi,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) In 5th generation mobile communication system (5G) and beyond, non-orthogonal multiple access (NOMA) has been studied to improves spectrum efficiency since multiple signals are superposed. Although power domain NOMA is a promising candidate, it is vulnerable to the nonlinearity of transceiver circuit. In order to reduce the influence of nonlinear distortion, a blind nonlinear compensation (BNLC) scheme in the receiver side of downlink NOMA system has been studied. However, it is not trivial how to mitigate effect of the channel frequency selectivity so as to compensate the transceiver nonlinearity via BNLC. In this paper, we propose a hybrid scheme consisting of BNLC and frequency domain equalizer (FDE) in the downlink power domain NOMA system and clarify its effectiveness by computer simulations.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) 5G / NOMA / Nonlinear compensation / NoFrequency-domain equalizer / EVM
Paper # RCS2020-136
Date of Issue 2020-12-10 (RCS)

Conference Information
Committee NS / RCS
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
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Improvement of EVM for Downlink NOMA with Blind Nonlinear Compensation Scheme in Frequency Selective Channel
Sub Title (in English)
Keyword(1) 5G
Keyword(2) NOMA
Keyword(3) Nonlinear compensation
Keyword(4) NoFrequency-domain equalizer
Keyword(5) EVM
1st Author's Name Jun Nagai
1st Author's Affiliation University of Electro-Communications(Univ. of Electro-Communications)
2nd Author's Name Yasushi Yamao
2nd Author's Affiliation University of Electro-Communications(Univ. of Electro-Communications)
3rd Author's Name Koji Ishibashi
3rd Author's Affiliation University of Electro-Communications(Univ. of Electro-Communications)
Date 2020-12-17
Paper # RCS2020-136
Volume (vol) vol.120
Number (no) RCS-298
Page pp.pp.13-18(RCS),
#Pages 6
Date of Issue 2020-12-10 (RCS)