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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| ICD, SDM, ITE-IST [detail] | 2022-08-10 09:15 |
Online | [Invited Talk]
A 39-GHz CMOS Bi-Directional Doherty Phased-Array Beamformer Using Shared-LUT DPD with Inter-Element Mismatch Compensation Technique for 5G Base-Station Zheng Li, Jian Pang, Yi Zhang, Yudai Yamazaki, Qiaoyu Wang, Peng Luo, Weichu Chen, Yijing Liao, Minzhe Tang, Zhengyan Guo, Yun Wang, Xi Fu, Dongwon You (Tokyo Tech), Naoki Oshima, Shinichi Hori, Kazuaki Kunihiro (NEC), Atsushi Shirane, Kenichi Okada (Tokyo Tech)  SDM2022-48 ICD2022-16 |
This work demonstrates a 39-GHz CMOS phased-array beamformer with the bi-directional Doherty PA-LNA. An inter-element mi... [more] | SDM2022-48 ICD2022-16 pp.64-67 |
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| MW, ED | 2019-01-17 14:30 |
Tokyo | Hitachi, Central Research Lab. | [Special Talk]
A Wideband Receiver With Frequency and Spatial Interference Filtering for Multi-Antenna Systems Naoki Oshima, Masaki Kitsunezuka, Kenta Tsukamoto, Kazuaki Kunihiro (NEC) ED2018-76 MW2018-143 |
[more] | ED2018-76 MW2018-143 pp.45-50 |
| ASN, NS, RCS, SR, RCC (Joint) |
2018-07-11 14:35 |
Hokkaido | Hakodate Arena | An evaluation of propagation loss on wireless physical layer identification Taichi Ohtsuji, Tatsuya Soma, Toshiki Takeuchi, Masaki Kitsunezuka, Kazuaki Kunihiro (NEC) RCC2018-31 NS2018-44 RCS2018-86 SR2018-25 ASN2018-25 |
Wireless devices have trivial individual differences due to hardware imperfections. Therefore, extracting unique feature... [more] | RCC2018-31 NS2018-44 RCS2018-86 SR2018-25 ASN2018-25 pp.37-43(RCC), pp.43-49(NS), pp.37-43(RCS), pp.25-31(SR), pp.53-59(ASN) |
| SR | 2018-05-25 10:00 |
Tokyo | Tokyo big sight | [Technology Exhibit]
Performance Evaluation of Dynamic Spectrum Sharing in an Urban Environment Tatsuya Yoshioka, Nobuo Suzuki (ATR), Masaki Kitsunezuka, Kazuaki Kunihiro (NEC), Shota Yamashita, Koji Yamamoto (Kyoto Univ.), Yuki Koizumi, Toru Hasegawa (Osaka Univ.) SR2018-14 |
The 5th generation mobile communication systems require more frequency band to achieve various user’s requirements for i... [more] | SR2018-14 pp.81-86 |
| AP, RCS (Joint) |
2017-11-08 13:05 |
Fukuoka | Fukuoka University | [Invited Lecture]
Prototyping of 28 GHz Digital Active Antenna System using GaN HEMT Amplifiers and 1-bit Transceivers for 5G Long-range Base Station Applications Tomoya Kaneko, Toshihide Kuwabara, Noriaki Tawa, Masaaki Tanio, Kousuke Tanabe, Kazuaki Kunihiro (NEC) AP2017-113 RCS2017-210 |
This paper reports the design and performance of a 28GHz Digital Active Antenna System(AAS) prototype for 5G long-range ... [more] | AP2017-113 RCS2017-210 pp.31-36(AP), pp.35-40(RCS) |
| SR, SRW (Joint) |
2017-10-23 14:00 |
Overseas | Grand Hotel Palatino, Rome, Italy | [Technology Exhibit]
Verification of Dynamic Frequency Sharing System with Wideband Sensing for 5G Nobuo Suzuki, Hiromi Matsuno, Tatsuya Yoshioka, Morihiko Tamai (ATR), Masaki Kitsunezuka, Kazuaki Kunihiro (NEC), Shota Yamashita, Koji Yamamoto (Kyoto University), Yuki Koizumi, Toru Hasegawa (Osaka University) SR2017-66 SRW2017-19 |
The 5th generation mobile communication systems require more frequency bandwidth to achieve various user’s requirements ... [more] | SR2017-66 SRW2017-19 p.1(SR), p.7(SRW) |
| RCS | 2017-10-19 15:05 |
Miyagi | Tohoku Institute of Technology | [Invited Lecture]
Evaluation of Functions for Dynamic Spectrum Sharing in 5th Generation Mobile Communication Systems Tatsuya Yoshioka, Hiromi Matsuno, Nobuo Suzuki, Morihiko Tamai (ATR), Masaki Kitsunezuka, Kunihiro Kazuaki (NEC), Shota Yamashita, Koji Yamamoto (Kyoto Univ.), Yuki Koizumi, Toru Hasegawa (Osaka Univ.) RCS2017-181 |
The 5th generation mobile communication systems require more frequency band to achieve various user’s requirements for i... [more] | RCS2017-181 pp.75-80 |
| RCS | 2016-10-21 14:55 |
Kanagawa | YRP (Yokosuka) | [Invited Lecture]
An approach of frequency sharing between heterogeneous radio systems for 5th genereation mobile communication systems Hiromi Matsuno (ATR), Masaki Kitsunezuka (NEC), Morihiko Tamai (ATR), Naoki Oshima, Keiichi Motoi, Kazuaki Kunihiro (NEC), Akio Hasegawa, Hiroyuki Shinbo (ATR) RCS2016-188 |
The 5th generation mobile communication systems require more frequency bandwidth to achieve various user’s requirements ... [more] | RCS2016-188 pp.197-202 |
| RCC, ASN, RCS, NS, SR (Joint) |
2015-07-30 13:00 |
Nagano | JA Naganoken Bldg. | [Invited Talk]
Research and Development of Small Cell Base Station for 5G Network Naoto Ishii, Yi Jiang, Yasushi Maruta, Kazuaki Kunihiro, Masao Ikekawa (NEC) RCC2015-36 NS2015-56 RCS2015-119 SR2015-37 ASN2015-46 |
Much attention from industry and academia in the move from current cellular systems toward 5G are attractive since recen... [more] | RCC2015-36 NS2015-56 RCS2015-119 SR2015-37 ASN2015-46 pp.105-110(RCC), pp.109-114(NS), pp.107-112(RCS), pp.123-128(SR), pp.145-150(ASN) |
| MW, ED | 2015-01-16 13:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Digital Doherty Transmitter with Envelope ΔΣ Modulated Class-D GaN Amplifier for 800 MHz band Keiichi Motoi (NEC), Andreas Wentzel (FBH), Masaaki Tanio, Shinichi Hori, Makoto Hayakawa (NEC), Wolfgang Heinrich (FBH), Kazuaki Kunihiro (NEC) ED2014-131 MW2014-195 |
This paper presents a novel transmitter (Tx) architecture combining voltage-mode class-D power amplifiers (PAs) with an ... [more] | ED2014-131 MW2014-195 pp.83-88 |
| MW, ED | 2015-01-16 13:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A Linear and Efficient 1-bit Digital Transmitter with Envelope Delta-sigma Modulation Masaaki Tanio, Shinichi Hori, Makoto Hayakawa, Noriaki Tawa, Keiichi Motoi, Kazuaki Kunihiro (NEC) ED2014-132 MW2014-196 |
[more] | ED2014-132 MW2014-196 pp.89-94 |
| MW | 2014-05-23 16:45 |
Kyoto | Doshisha Univ. | A Low-Spurious E-Band GaAs MMIC Frequency Converter for Over-Gbps Wireless Communication Yasuhiro Morita, Shuya Kishimoto, Masaharu Ito, Keiichi Motoi, Kazuaki Kunihiro (NEC) MW2014-41 |
A highly integrated, low-spurious E-band MMIC frequency converter, which comprises a sub-harmonic mixer with an LO multi... [more] | MW2014-41 pp.99-103 |
| MW | 2009-09-25 17:15 |
Tokyo | Univ. of Electro-Communications | [Special Talk]
Anlysis and Design of a Dynamic Predistorter for WCDMA Handsets Power Amplifier Shingo Yamanouchi, Yuuichi Aoki, Kazuaki Kunihiro (NEC), Tomohisa Hirayama (NEC Electronics Corp.), Takashi Miyazaki (NEC), Hikaru Hida (NEC Electronics Corp.) MW2009-90 |
This paper presents a dynamic predistorter (PD), which linearizes dynamic AM-AM and AM-PM of a wide-band CDMA (WCDMA) ha... [more] | MW2009-90 pp.93-98 |
| RCS, MoNA, WBS, SR, MW (Joint) |
2007-03-09 13:00 |
Kanagawa | YRP | [Invited Talk]
Circuit design of highly linear and efficient power amplifiers for WCDMA applications
-- Dynamic predistortion and polar modulation technologies -- Kazuaki Kunihiro, Shingo Yamanouchi, Kiyohiko Takahashi, Yuuichi Aoki (NEC) |
This paper presents linearization and efficiency-enhancement techniques, i.e., dynamic predistortion (PD) and polar modu... [more] | MW2006-193 pp.1-6 |
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