Junichiro Hagiwara

According to our database, Junichiro Hagiwara authored at least 31 papers between 2007 and 2025.

Collaborative distances:

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

2025

Strategies for DOA-DNN Estimation Accuracy Improvement at Low and High SNRs.

Daniel Akira Ando, Toshihiko Nishimura, Takanori Sato, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

IEICE Trans. Commun., 2025

2024

Hamiltonian Monte Carlo-Based Near-Optimal MIMO Signal Detection.

Junichiro Hagiwara, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane

CoRR, 2024

2023

Deep Neural Networks Based End-to-End DOA Estimation System.

Daniel Akira Ando, Yuya Kase, Toshihiko Nishimura, Takanori Sato, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

IEICE Trans. Commun., December, 2023

Smart Radio Environments with Intelligent Reflecting Surfaces for 6G Sub-Terahertz-Band Communications.

Yasutaka Ogawa, Shuto Tadokoro, Satoshi Suyama, Masashi Iwabuchi, Toshihiko Nishimura, Takanori Sato, Junichiro Hagiwara, Takeo Ohgane

IEICE Trans. Commun., September, 2023

A near-optimal stochastic MIMO signal detection with a mixture of t-distribution prior.

Junichiro Hagiwara, Kazushi Matsumura, Hiroki Asumi, Yukiko Kasuga, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane

CoRR, 2023

Performance Analysis of DNN-PCA for DOA Estimation with Three Radio Wave Sources.

Daniel Akira Ando, Toshihiko Nishimura, Takanori Sato, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the 22nd International Symposium on Communications and Information Technologies, 2023

Near-Optimal Stochastic MIMO Signal Detection with a Mixture of T-Distributions Prior.

Junichiro Hagiwara, Kazushi Matsumura, Hiroki Asumi, Yukiko Kasuga, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane

Proceedings of the IEEE Global Communications Conference, 2023

2022

A Proposal of an End-to-End DoA Estimation System Aided by Deep Learning.

Daniel Akira Ando, Toshihiko Nishimura, Takanori Sato, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the 25th International Symposium on Wireless Personal Multimedia Communications, 2022

Parameter-Learned AMP for MIMO Signal Detection.

Mari Miyoshi, Wakaba Tsujimoto, Toshihiko Nishimura, Takanori Sato, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the IEEE VTS Asia Pacific Wireless Communications Symposium, 2022

2021

Radio Techniques Incorporating Sparse Modeling.

Toshihiko Nishimura, Yasutaka Ogawa, Takeo Ohgane, Junichiro Hagiwara

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021

A Novel MIMO Signal Detection Method Using Hamiltonian Monte Carlo Approach.

Kazushi Matsumura, Junichiro Hagiwara, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Takanori Sato

Proceedings of the 24th International Symposium on Wireless Personal Multimedia Communications, 2021

Downlink Channel Estimation Based on Multipath Separation in an FDD MIMO System.

Shiori Tosaka, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato

Proceedings of the 2021 IEEE VTS 17th Asia Pacific Wireless Communications Symposium (APWCS), 2021

2019

A Study on Performance Improvement by CRC-Aided GaBP for Large-Scale SCMA Detection.

Renjie Li, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the 22nd International Symposium on Wireless Personal Multimedia Communications, 2019

A Study on Iterative Equalization with GaBP and Soft Successive Cancellation List Decoding in a Polar-Coded System.

Kentaro Fukuda, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the 22nd International Symposium on Wireless Personal Multimedia Communications, 2019

A Study on Layouts of Distributed Antenna Arrays in an Indoor Multi-User Massive MIMO System.

Yuya Suzuki, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the International Conference on Computing, Networking and Communications, 2019

Computational Complexity Reduction of Receive Weight Matrices in Massive MIMO SC-FDF^†.

Kensei Saito, Yasutaka Ogawa, Toshihiko Nishimura, Takeo Ohgane, Junichiro Hagiwara

Proceedings of the International Conference on Computing, Networking and Communications, 2019

Loose Beamforming by Antenna Selection in a Multiuser Massive MIMO System.

Shunta Nakamura, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the IEEE VTS Asia Pacific Wireless Communications Symposium, 2019

2018

Performance Comparison of Compressed Sensing Algorithms for DOA Estimation of Multi-band Signals.

Toyoki Hoshikawa, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the 15th Workshop on Positioning, Navigation and Communications, 2018

Superposed 16-QAM Signal Detection Using GaBP in a Massive MIMO System.

Taisei Watabe, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2018

2016

Real-Time Joint Channel and Hyperparameter Estimation Using Sequential Monte Carlo Methods for OFDM Mobile Communications.

Junichiro Hagiwara

IEICE Trans. Commun., 2016

2015

An OFDM Channel Estimation Method Based on a State-Space Model that Appropriately Considers Frequency Correlation.

Junichiro Hagiwara

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015

Comparison of Kalman smoother to wiener smoother in practical OFDM channel estimation.

Junichiro Hagiwara, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa

Proceedings of the 21st Asia-Pacific Conference on Communications, 2015

2012

An optimized seamless IP flow mobility management architecture for traffic offloading.

Jinho Kim, Yasufumi Morioka, Junichiro Hagiwara

Proceedings of the 2012 IEEE Network Operations and Management Symposium, 2012

Mobile-initiated with network-controlled IP flow mobility mechanism for multi-interface mobile node.

Jinho Kim, Yasufumi Morioka, Junichiro Hagiwara

Proceedings of the IEEE International Conference on Consumer Electronics, 2012

2011

Investigation on Signaling Overhead for Mobility Management with Carrier Aggregation in LTE-Advanced.

Kengo Yagyu, Takeshi Nakamori, Hiroyuki Ishii, Mikio Iwamura, Nobuhiko Miki, Takahiro Asai, Junichiro Hagiwara

IEICE Trans. Commun., 2011

Study on resource allocation for VoIP traffic with subframe bundling in LTE uplink.

Masashige Shirakabe, Yoshiaki Ofuji, Akihito Hanaki, Nobuhiko Miki, Takahiro Asai, Junichiro Hagiwara

Proceedings of the 14th International Symposium on Wireless Personal Multimedia Communications, 2011

Investigation on Mobility Management for Carrier Aggregation in LTE-Advanced.

Kengo Yagyu, Takeshi Nakamori, Hiroyuki Ishii, Mikio Iwamura, Nobuhiko Miki, Takahiro Asai, Junichiro Hagiwara

Proceedings of the 74th IEEE Vehicular Technology Conference, 2011

2009

Joint Multi-Filter Design for Full-Duplex MU-MIMO Relaying.

Jaturong Sangiamwong, Takahiro Asai, Junichiro Hagiwara, Yukihiko Okumura, Tomoyuki Ohya

Proceedings of the 69th IEEE Vehicular Technology Conference, 2009

2008

Evaluation of user throughput for MU-MIMO coordinated wireless networks.

Anass Benjebbour, Masashige Shirakabe, Yusuke Ohwatari, Junichiro Hagiwara, Tomoyuki Ohya

Proceedings of the IEEE 19th International Symposium on Personal, 2008

Reduced-complexity transmit power optimization techniques for multiuser MIMO with per-antenna power constraint.

Yusuke Ohwatari, Anass Benjebbour, Junichiro Hagiwara, Tomoyuki Ohya

Proceedings of the 46th Annual Allerton Conference on Communication, 2008

2007

Peak Reduction Improvement in Iterative Clipping and Filtering with a Graded Band-Limiting Filter for OFDM Transmission.

Toshiyuki Matsuda, Shigeru Tomisato, Masaharu Hata, Hiromasa Fujii, Junichiro Hagiwara

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007