| 2023 | KES | Analysis of Activity Logs of GakuNin LMS in the Use of the Information Security Course at Gunma University. | Nobukuni Hamamoto, Koichi Ogawa, Hiroshi Ueda, Masako Furukawa, Motonori Nakamura, Kazutsuna Yamaji |
| 2014 | APNOMS | Network operational method by using software-defined networking for improvement of communication quality at disasters. | Koichi Ogawa, Noriaki Yoshiura |
| 2009 | PIMRC | MIMO channel capacity measurement in the presence of spatial clusters using a fading emulator. | Tsutomu Sakata, Atsushi Yamamoto, Koichi Ogawa, Jun-ichi Takada |
| 2007 | PIMRC | Effects of Received Power Imbalance on the Channel Capacity of a Handset MIMO. | Koichi Ogawa, Satoru Amari, Hiroshi Iwai, Atsushi Yamamoto |
| 2007 | VTC | Outdoor Urban Propagation Experiment of a Handset MIMO Antenna with a Human Phantom Located in a Browsing Stance. | Atsushi Yamamoto, Toshiteru Hayashi, Koichi Ogawa, Kim Olesen, Jesper dum Nielsen, Naizheng Zheng, Gert Frlund Pedersen |
| 2006 | VTC | Performance Analysis of MIMO-OFDM Systems using Indoor Wideband MIMO Channel Measurement Data. | Gia Khanh Tran, Nguyen Dung Dao, Kei Sakaguchi, Kiyomichi Araki, Hiroshi Iwai, Tsutomu Sakata, Koichi Ogawa |
| 2005 | CIBCB | An Internet-based Melanoma Diagnostic System - Toward the Practical Application. | Hitoshi Iyatomi, Hiroshi Oka, Masahiro Hashimoto, Masaru Tanaka, Koichi Ogawa |
| 2005 | PIMRC | Measurements on Area Coverage of 5GHZ Band MIMO-OFDM System in Residential Home Environment. | Nguyen Dung Dao, Hai-Yeow-Eugene Chua, Kei Sakaguchi, Kiyomichi Araki, Hiroshi Iwai, Tsutomu Sakata, Koichi Ogawa |
| 2002 | ICIP | Extraction of the vertebral foramen of the third lumbar vertebra with snakes. | Kazumitsu Kondo, Koichi Ogawa, K. Sakura |
| 2001 | ICIP | Accurate image reconstruction with the source space tree algorithm (SSTA) for Compton CT. | Koichi Ogawa, Jin Ohta |
| 2000 | ICIP | Comparative Study on Statistical Image Reconstruction Combined with Modification of the Number of Projections. | Kotoko Morikawa, Koichi Ogawa |
| 2000 | ICIP | Extraction of Arteriovenous Malformation with Factor Analysis. | Yoshiyuki Nyui, Koichi Ogawa, Etsuo Kunieda |
| 1998 | ICIP | Introduction of Ordered Subsets Algorithm to Maximum a posteriori Expectation Maximization Method. | Hiroshi Urabe, Koichi Ogawa |