Atsushi Okamura

According to our database, Atsushi Okamura authored at least 33 papers between 2001 and 2020.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2020

Experimental Field Trials on MU-MIMO Transmissions for High SHF Wide-Band Massive MIMO in 5G.

Manabu Sakai, Kenichiro Kamohara, Hiroki Iura, Hiroshi Nishimoto, Kazuaki Ishioka, Yoshitaka Murata, Masayuki Yamamoto, Akihiro Okazaki, Nobuhide Nonaka, Satoshi Suyama, Jun Mashino, Atsushi Okamura, Yukihiko Okumura

IEEE Trans. Wirel. Commun., 2020

Flexibility-Enhanced HTS System for Disaster Management: Responding to Communication Demand Explosion in a Disaster.

Shigenori Tani, Katsuyuki Motoyoshi, Hiroyasu Sano, Atsushi Okamura, Hiroki Nishiyama, Nei Kato

IEEE Trans. Emerg. Top. Comput., 2020

Development of assembly system with quick and low-cost installation.

Masanari Tennomi, Atsushi Okamura, Yuta Nakamura, Taiki Abe, Seiji Wakamatsu, Sho Tajima, Toshihiro Nishimura, Yuji Hirai, Takuro Sawada, Naoki Ichikawa, Tokuo Tsuji, Kimitoshi Yamazaki, Yosuke Suzuki, Tetsuyou Watanabe

Adv. Robotics, 2020

Robust bin-picking system using tactile sensor.

Sho Tajima, Seiji Wakamatsu, Taiki Abe, Masanari Tennomi, Koki Morita, Hirotoshi Ubata, Atsushi Okamura, Yuji Hirai, Kota Morino, Yosuke Suzuki, Tokuo Tsuji, Kimitoshi Yamazaki, Tetsuyou Watanabe

Adv. Robotics, 2020

2019

Optimizing Space-Air-Ground Integrated Networks by Artificial Intelligence.

Nei Kato, Zubair Md. Fadlullah, Fengxiao Tang, Bomin Mao, Shigenori Tani, Atsushi Okamura, Jiajia Liu

IEEE Wirel. Commun., 2019

An Adaptive Beam Control Technique for Q Band Satellite to Maximize Diversity Gain and Mitigate Interference to Terrestrial Networks.

Shigenori Tani, Katsuyuki Motoyoshi, Hiroyasu Sano, Atsushi Okamura, Hiroki Nishiyama, Nei Kato

IEEE Trans. Emerg. Top. Comput., 2019

An Equalization of PN-DSTBC for Concatenating with Spectral Precoding.

Kanako Yamaguchi, Nicolas Gresset, Hiroshi Nishimoto, Akihiro Okazaki, Hiroyasu Sano, Shusaku Umeda, Kaoru Tsukamoto, Atsushi Okamura

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

A Narrow-Band Coherent FSK Transmission System Using Phase Rotated Transmit Diversity with Suppression of Envelope Fluctuation.

Kanako Yamaguchi, Masatsugu Higashinaka, Hiroyasu Sano, Atsushi Okamura, Takeo Ohgane, Toshihiko Nishimura

Proceedings of the 90th IEEE Vehicular Technology Conference, 2019

5G R&D Achievements for High-Data-Rate and Low-Power-Consumption Radio Access Technologies with Higher-Frequency-Band and Wider-Bandwidth Massive MIMO.

Yukihiko Okumura, Satoshi Suyama, Naoto Ishii, Yasushi Maruta, Akihiro Okazaki, Atsushi Okamura, Jun Terada, Takeshi Onizawa

Proceedings of the 89th IEEE Vehicular Technology Conference, 2019

Overlap FDE with Signal Extraction Based on SIR Considering Time/Frequency Selectivity of Fading Channels.

Akinori Nakajima, Hiroyasu Sano, Atsushi Okamura

Proceedings of the 90th IEEE Vehicular Technology Conference, 2019

First Demonstration of Bandwidth-Allocation Scheme for Network-Slicing-Based TDM-PON toward 5G and IoT Era.

Hiroyuki Uzawa, Kazuaki Honda, Hirotaka Nakamura, Yukio Hirano, Kenichi Nakura, Seiji Kozaki, Atsushi Okamura, Jun Terada

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

2018

High-Speed Train Communications Standardization in 3GPP 5G NR.

Fumihiro Hasegawa, Akinori Taira, Gosan Noh, Bing Hui, Hiroshi Nishimoto, Akihiro Okazaki, Atsushi Okamura, Junhwan Lee, Ilgyu Kim

IEEE Commun. Stand. Mag., 2018

Indoor Experimental Trial on Hybrid 16-Beam Spatial-Multiplexing for High SHF Wide-Band Massive MIMO in 5G.

Manabu Sakai, Kenji Nakagawa, Hiroki Iura, Naofumi Iwayama, Akihiro Okazaki, Nobuhide Nonaka, Satoshi Suyama, Jun Mashino, Atsushi Okamura, Yukihiko Okumura

Proceedings of the 88th IEEE Vehicular Technology Conference, 2018

Non-Linear Precoding for 5G NR.

Fumihiro Hasegawa, Hiroshi Nishimoto, Nuan Song, Mihail Enescu, Akinori Taira, Akihiro Okazaki, Atsushi Okamura

Proceedings of the 2018 IEEE Conference on Standards for Communications and Networking, 2018

2017

Performance Evaluation of NL-BMD Precoding over Analog-Digital Hybrid Beamforming for High SHF Wide-Band Massive MIMO in 5G.

Hiroshi Nishimoto, Akinori Taira, Hiroki Iura, Shigeru Uchida, Akihiro Okazaki, Atsushi Okamura

Int. J. Wirel. Inf. Networks, 2017

NL-BMD: Nonlinear Block Multi-Diagonalization Precoding for High SHF Wide-Band Massive MIMO in 5G.

Hiroshi Nishimoto, Akinori Taira, Hiroki Iura, Shigeru Uchida, Akihiro Okazaki, Atsushi Okamura

IEICE Trans. Commun., 2017

Performance Evaluation of Nonlinear Precoding Based on 44 GHz Band Experiments for 5G Ultra High Capacity Massive MIMO.

Kenji Nakagawa, Shigeru Uchida, Akinori Taira, Hiroshi Nishimoto, Hiroki Iura, Akinori Okazaki, Atsushi Okamura

Proceedings of the 85th IEEE Vehicular Technology Conference, 2017

Multi-Carrier Relaying for Successive Data Transfer in Earth Observation Satellite Constellations.

Shigenori Tani, Michiya Hayama, Hiroki Nishiyama, Nei Kato, Katsuyuki Motoyoshi, Atsushi Okamura

Proceedings of the 2017 IEEE Global Communications Conference, 2017

Static sequence wrapped DFT-s-OFDM for high-speed train scenarios in high-SHF bands.

Fumihiro Hasegawa, Hiroshi Nishimoto, Akihiro Okazaki, Atsushi Okamura

Proceedings of the 2017 European Conference on Networks and Communications, 2017

3GPP standardization activities in relay based 5G high speed train scenarios for the SHF band.

Fumihiro Hasegawa, Akinori Taira, Hiroshi Nishimoto, Akihiro Okazaki, Atsushi Okamura, Gosan Noh, Bing Hui, Junhwan Lee, Ilgyu Kim

Proceedings of the IEEE Conference on Standards for Communications and Networking, 2017

2016

Block lower multi-diagonalization for multiuser MIMO downlink.

Hiroshi Nishimoto, Hiroki Iura, Akinori Taira, Akihiro Okazaki, Atsushi Okamura

Proceedings of the IEEE Wireless Communications and Networking Conference, 2016

Nonlinear block multi-diagonalization precoding for high SHF wide-band massive MIMO in 5G.

Hiroshi Nishimoto, Akinori Taira, Hiroki Iura, Shigeru Uchida, Akihiro Okazaki, Atsushi Okamura

Proceedings of the 27th IEEE Annual International Symposium on Personal, 2016

Two-dimensional diversity with serial concatenation of spectral precoding and DSTBC.

Kanako Yamaguchi, Nicolas Gresset, Hiroshi Nishimoto, Akihiro Okazaki, Shusaku Umeda, Kaoru Tsukamoto, Hiroyasu Sano, Atsushi Okamura

Proceedings of the 2016 International Symposium on Information Theory and Its Applications, 2016

An adaptive beam control technique for diversity gain maximization in LEO satellite to ground transmissions.

Shigenori Tani, Katsuyuki Motoyoshi, Hiroyasu Sano, Atsushi Okamura, Hiroki Nishiyama, Nei Kato

Proceedings of the 2016 IEEE International Conference on Communications, 2016

2015

Novel Dynamic and Static Methods for Out-of-Band Power Suppression in SC-OFDM.

Fumihiro Hasegawa, Akihiro Okazaki, Atsushi Okamura, Damien Castelain, Cristina Ciochina-Duchesne, Loïc Brunel, David Mottier

IEEE Wirel. Commun. Lett., 2015

Cell Structure for High-Speed Land-Mobile Communications.

Shusaku Umeda, Akihiro Okazaki, Hiroshi Nishimoto, Kaoru Tsukamoto, Kanako Yamaguchi, Atsushi Okamura

Proceedings of the IEEE 82nd Vehicular Technology Conference, 2015

Static sequence assisted out-of-band power suppression for DFT-s-OFDM.

Fumihiro Hasegawa, Shintaro Shinjo, Akihiro Okazaki, Atsushi Okamura, Loïc Brunel, David Mottier

Proceedings of the 26th IEEE Annual International Symposium on Personal, 2015

Performance Evaluation of 44GHz Band Massive MIMO Based on Channel Measurement.

Akinori Taira, Hiroki Iura, Kenji Nakagawa, Shigeru Uchida, Kazuaki Ishioka, Akihiro Okazaki, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura, Atsushi Okamura

Proceedings of the 2015 IEEE Globecom Workshops, San Diego, CA, USA, December 6-10, 2015, 2015

2012

Derivation of monopulse angle accuracy for phased array radar to achieve Cramer-Rao lower bound.

Ryuhei Takahashi, Kazufumi Hirata, Teruyuki Hara, Atsushi Okamura

Proceedings of the 2012 IEEE International Conference on Acoustics, 2012

2011

Separation of Mixtures of Complex Sinusoidal Signals with Independent Component Analysis.

Tetsuo Kirimoto, Takeshi Amishima, Atsushi Okamura

IEICE Trans. Commun., 2011

2004

Wrapper-based bus implementation techniques for performance improvement and cost reduction.

Kenichiro Anjo, Atsushi Okamura, Masato Motomura

IEEE J. Solid State Circuits, 2004

2002

NECoBus: a high-end SOC bus with a portable and low-latency wrapper-based interface mechanism.

Kenichiro Anjo, Atsushi Okamura, Tomoharu Kajiwarat, Noriko Mizushima, Masafumi Omori, Yasuaki Kuroda

Proceedings of the IEEE 2002 Custom Integrated Circuits Conference, 2002

2001

A complex adaptive delay filter.

Katsuya Kusaba, Atsushi Okamura, Takashi Sekiguchi

Proceedings of the IEEE International Conference on Acoustics, 2001