Atsushi Ohta

According to our database, Atsushi Ohta authored at least 57 papers between 1999 and 2020.

Collaborative distances:

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

2020

Computational Complexity of DECLARE Relation Problem for Sound non-Free-Choice Workflow Nets.

Atsushi Ohta, Kohkichi Tsuji

Proceedings of the 59th Annual Conference of the Society of Instrument and Control Engineers of Japan, 2020

2019

Experimental Verification of 1-Tap Time Domain Beamforming for P-MP Relay System via 75 GHz Band Measured CSI.

Mizuki Suga, Atsushi Ohta, Kazuto Goto, Takahiro Tsuchiya, Nobuaki Otsuki, Yushi Shirato, Naoki Kita, Takeshi Onizawa

IEICE Trans. Commun., 2019

2018

Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement.

Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Masataka Iizuka

IEICE Trans. Commun., 2018

2017

Experimental Investigation of Space Division Multiplexing on Massive Antenna Systems for Wireless Entrance.

Kazuki Maruta, Atsushi Ohta, Satoshi Kurosaki, Takuto Arai, Masataka Iizuka

IEICE Trans. Commun., 2017

Massive Antenna Systems for Wireless Entrance (MAS-WE): Practical Application of Massive MIMO with Simplified Space Division Multiplexing Schemes.

Kazuki Maruta, Atsushi Ohta, Satoshi Kurosaki, Takuto Arai, Masataka Iizuka

IEICE Trans. Commun., 2017

Null-Space Expansion for Multiuser Massive MIMO Inter-User Interference Suppression in Time Varying Channels.

Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka

IEICE Trans. Commun., 2017

Antenna Array Arrangement for Massive MIMO to Reduce Channel Spatial Correlation in LOS Environment.

Takuto Arai, Atsushi Ohta, Yushi Shirato, Satoshi Kurosaki, Kazuki Maruta, Tatsuhiko Iwakuni, Masataka Iizuka

IEICE Trans. Commun., 2017

2016

First Eigenmode Transmission by High Efficient CSI Estimation for Multiuser Massive MIMO Using Millimeter Wave Bands.

Kazuki Maruta, Tatsuhiko Iwakuni, Atsushi Ohta, Takuto Arai, Yushi Shirato, Satoshi Kurosaki, Masataka Iizuka

Sensors, 2016

A Replication Protocol Supporting Multiple Consistency Models without Single Point of Failure.

Atsushi Ohta, Ryota Kawashima, Hiroshi Matsuo

IEICE Trans. Inf. Syst., 2016

Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO Using Measured Channel State Information.

Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka

Proceedings of the IEEE 84th Vehicular Technology Conference, 2016

Correlation-based user scheduling and multi-planar parallelogram array for Massive antenna systems.

Takuto Arai, Atsushi Ohta, Satoshi Kurosaki, Kazuki Maruta, Tatsuhiko Iwakuni, Masataka Iizuka

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

2015

A Graph-Theory-Based Algorithm for Euler Number Computing.

Lifeng He, Bin Yao, Xiao Zhao, Yun Yang, Yuyan Chao, Atsushi Ohta

IEICE Trans. Inf. Syst., 2015

Inter-user interference suppression in time varying channel with null-space expansion for multiuser massive MIMO.

Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka

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

A novel application of Massive MIMO: Massive Antenna Systems for Wireless Entrance (MAS-WE).

Kazuki Maruta, Atsushi Ohta, Satoshi Kurosaki, Takuto Arai, Masataka Iizuka

Proceedings of the International Conference on Computing, Networking and Communications, 2015

Experimental investigation of space division multiplexing on Massive Antenna Systems.

Kazuki Maruta, Atsushi Ohta, Satoshi Kurosaki, Takuto Arai, Masataka Iizuka

Proceedings of the 2015 IEEE International Conference on Communications, 2015

Deferred-Update Replication Supporting Multiple Consistency Models.

Atsushi Ohta, Ryota Kawashima, Hiroshi Matsuo

Proceedings of the Third International Symposium on Computing and Networking, 2015

2014

An Efficient Strategy for Bit-Quad-Based Euler Number Computing Algorithm.

Bin Yao, Hua Wu, Yun Yang, Yuyan Chao, Atsushi Ohta, Haruki Kawanaka, Lifeng He

IEICE Trans. Inf. Syst., 2014

Applying FFR to Inter-Cell Interference Cancellation with Quasi-Decentralized Base Station Cooperation.

Kazuki Maruta, Atsushi Ohta, Masataka Iizuka, Takatoshi Sugiyama

Proceedings of the IEEE 79th Vehicular Technology Conference, 2014

2013

Network Interface Architecture with Scalable Low-Latency Message Receiving Mechanism.

Noboru Tanabe, Atsushi Ohta

IEICE Trans. Inf. Syst., 2013

The Liveness of WS³PR: Complexity and Decision.

GuanJun Liu, Changjun Jiang, MengChu Zhou, Atsushi Ohta

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013

2012

Spectral Efficiency Improvement of Fractional Frequency Reuse by Inter-Cell Interference Cancellation on Cooperative Base Station.

Kazuki Maruta, Atsushi Ohta, Masataka Iizuka, Takatoshi Sugiyama

IEICE Trans. Commun., 2012

Iterative Inter-Cluster Interference Cancellation for Cooperative Base Station Systems.

Kazuki Maruta, Atsushi Ohta, Masataka Iizuka, Takatoshi Sugiyama

Proceedings of the 75th IEEE Vehicular Technology Conference, 2012

Decidability Analysis of Some Classes of Extended Function Petri Net.

Atsushi Ohta, Kohkichi Tsuji

Proceedings of the Third International Conference on Networking and Computing, 2012

2011

Verifying Structurally Weakly Persistent Net Is Co-NP Complete.

Atsushi Ohta, Kohkichi Tsuji

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011

Reconfigurable Android with an FPGA Accelerator for the Future Embedded Devices.

Hironori Nakajo, Keisuke Koike, Atsushi Ohta, Kohta Ohshima, Kaori Fujinami

Proceedings of the Second International Conference on Networking and Computing, 2011

2009

Experiments on FPGA-Implemented Eigenbeam MIMO-OFDM With Transmit Antenna Selection.

Takeshi Onizawa, Atsushi Ohta, Yusuke Asai

IEEE Trans. Veh. Technol., 2009

Computational Complexity of Liveness Problem of Normal Petri Net.

Atsushi Ohta, Kohkichi Tsuji

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

A New User Selection Measure in Block Diagonalization Algorithm for Multiuser MIMO Systems.

Riichi Kudo, Yasushi Takatori, Kentaro Nishimori, Atsushi Ohta, Shuji Kubota, Masato Mizoguchi

IEICE Trans. Commun., 2009

Optimized dynamic resource allocation in frequency and spatial domains.

Takashi Maruyama, Kazuki Maruta, Atsushi Ohta, Masashi Nakatsugawa

Proceedings of the 70th IEEE Vehicular Technology Conference, 2009

Inter-cluster interference canceller for multiuser MIMO distributed antenna systems.

Kazuki Maruta, Takashi Maruyama, Atsushi Ohta, Masashi Nakatsugawa

Proceedings of the IEEE 20th International Symposium on Personal, 2009

Network Interface Architecture for Scalable Message Queue Processing.

Noboru Tanabe, Atsushi Ohta, Pulung Waskito, Hironori Nakajo

Proceedings of the 15th IEEE International Conference on Parallel and Distributed Systems, 2009

2008

Antenna Selection Method for Terminal Antennas Employing Orthogonal Polarizations and Patterns in Outdoor Multiuser MIMO System.

Naoki Honma, Riichi Kudo, Kentaro Nishimori, Yasushi Takatori, Atsushi Ohta, Shuji Kubota

IEICE Trans. Commun., 2008

2007

New Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO.

Yasushi Takatori, Riichi Kudo, Atsushi Ohta, Koichi Ishihara, Kentaro Nishimori, Shuji Kubota

IEICE Trans. Commun., 2007

A Synchronization Scheme for Packet Mode MIMO-OFDM Signals in Wireless LAN.

Takeshi Onizawa, Takafumi Fujita, Yusuke Asai, Daisei Uchida, Atsushi Ohta, Satoru Aikawa

IEICE Trans. Commun., 2007

New Downlink Beamforming Method for Cooperative Multiple Access Point Systems.

Riichi Kudo, Yasushi Takatori, Kentaro Nishimori, Atsushi Ohta, Shuji Kubota

IEICE Trans. Commun., 2007

A Simple and Feasible Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems.

Yusuke Asai, Wenjie Jiang, Takeshi Onizawa, Atsushi Ohta, Satoru Aikawa

IEICE Trans. Commun., 2007

Using a GPU to Accelerate Die and Mold Fabrication.

Masatomo Inui, Atsushi Ohta

IEEE Computer Graphics and Applications, 2007

New Simple Capacity Estimation Method for Multiuser Block Diagonalization Transmission.

Riichi Kudo, Yasushi Takatori, Atsushi Ohta, Kentaro Nishimori, Shuji Kubota

Proceedings of the 65th IEEE Vehicular Technology Conference, 2007

Implementation and Evaluation of Multicast Mechanism on Network Interface Plugged into a Memory Slot.

Atsushi Ohta, Yoshihiro Hamada, Akira Kitamura, Noboru Tanabe, Hideharu Amano, Hironori Nakajo

Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2007

User Selection Method for Block Diagonalization in Multiuser MIMO Systems.

Riichi Kudo, Yasushi Takatori, Kentaro Nishimori, Atsushi Ohta, Shuji Kubota

Proceedings of the Global Communications Conference, 2007

2006

FPGA Implementation of Eigenbeam MIMO-OFDM for Wireless LAN and Its Experimental Performance.

Takeshi Onizawa, Atsushi Ohta, Yusuke Asai, Satoru Aikawa

IEICE Trans. Commun., 2006

Special Section on Concurrent/Hybrid Systems: Theory and Applications.

Atsushi Ohta

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006

Experimental Evaluation of Eigenbeam MIMO-OFDM Implemented in FPGA for Wireless LAN.

Takeshi Onizawa, Atsushi Ohta, Yusuke Asai, Satoru Aikawa

Proceedings of the 63rd IEEE Vehicular Technology Conference, 2006

Experimental Evaluation of Transmit Antenna Selection Implemented in FPGA for MIMO-OFDM.

Takeshi Onizawa, Atsushi Ohta, Satoru Aikawa

Proceedings of the 64th IEEE Vehicular Technology Conference, 2006

A Simplified Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems.

Yusuke Asai, Wenjie Jiang, Takeshi Onizawa, Satoru Aikawa, Daisei Uchida, Atsushi Ohta

Proceedings of the 64th IEEE Vehicular Technology Conference, 2006

Experimental Evaluation of Transmit Antenna Selection Implemented in FPGA for Eigenbeam MIMO-OFDM.

Takeshi Onizawa, Atsushi Ohta, Yusuke Asai, Satoru Aikawa

Proceedings of the IEEE 17th International Symposium on Personal, 2006

Performance Evaluation of 8×8 Multi-User MIMO-OFDM Testbed in an Actual Indoor Environment.

Kentaro Nishimori, Riichi Kudo, Yasushi Takatori, Atsushi Ohta, Koichi Tsunekawa

Proceedings of the IEEE 17th International Symposium on Personal, 2006

Structural analysis of Petri nets with batch processing arcs.

Atsushi Ohta, Chihiro Kato, Kohkichi Tsuji

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2006), 2006

2005

A Simplified Maximum Likelihood Detector for OFDM-SDM Systems in Wireless LAN.

Wenjie Jiang, Takeshi Onizawa, Atsushi Ohta, Satoru Aikawa

IEICE Trans. Commun., 2005

A Reduced-Complexity Signal Detection Scheme Employing ZF and K-Best Algorithms for OFDM/SDM.

Takafumi Fujita, Atsushi Ohta, Takeshi Onizawa, Takatoshi Sugiyama

IEICE Trans. Commun., 2005

Minimal time reachability problem of some subclasses of timed Petri nets.

Atsushi Ohta, Kohkichi Tsuji, Tomiji Hisamura

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2005), 2005

2004

A new signal detection scheme combining ZF and K-best algorithms for OFDM/SDM.

Tukafunzi Fujita, Takeshi Onizawa, Wenjie Jiang, Daisei Uchida, Takatoshi Sugiyama, Atsushi Ohta

Proceedings of the IEEE 15th International Symposium on Personal, 2004

Unfolding of Petri nets with semilinear reachability set.

Atsushi Ohta, Kohkichi Tsuji

Proceedings of the 2004 International Symposium on Circuits and Systems, 2004

2003

Insufficiently marked siphon of Petri nets - extension of token-free siphon.

Atsushi Ohta, Kohkichi Tsuji

Proceedings of the 2003 International Symposium on Circuits and Systems, 2003

2002

NP-Hardness of Liveness Problem of Bounded Asymmetric Choice Net.

Atsushi Ohta, Kohkichi Tsuji

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002

1999

Prototype AWA: design and implementation of a high speed ATM wireless access system using 25 GHz band.

Toshihiro Manabe, Takatoshi Sugiyama, Atsushi Ohta, Fusao Nuno, Hiroyuki Suzuki, Shuta Uwano, Satoru Aikawa, Masahiro Umehira

Comput. Networks, 1999

Automatic repeat request schemes for high-speed wireless access systems with constraint of finite control channel capacity.

Masafumi Yoshioka, Atsushi Ohta, Yoichi Matsumoto, Masahiro Umehira

Proceedings of the 1999 IEEE Wireless Communications and Networking Conference, 1999