Akira Ogawa

Publication Activity (10 Years)

Years Active: 1978-2020
Publications (10 Years): 1

Top Topics

Detect Anomalies

Anomalous Behavior

Unsupervised Learning

Anomaly Detection

Top Venues

Publications

Topon Paul, Takeichiro Nishikawa, Shigeru Maya, Akihiro Itakura, Toshihide Kawachi, Akira Ogawa, Hiroshi Yokota
Segmentation of Multi-State Compound Waveform and Extraction of Features for Anomaly Detection. ICMLA (2020)
Kensaku Asahi, Hideki Banno, Osami Yamamoto, Akira Ogawa, Keiichi Yamada
Development and evaluation of a scheme for detecting multiple approaching vehicles through acoustic sensing. Intelligent Vehicles Symposium (2011)
Toshihiro Matsumura, Takeshi Murooka, Akira Ogawa
Randomized strategy equilibrium in the action commitment game with costs of leading. Oper. Res. Lett. 39 (2) (2011)
Akira Ogawa, Tomokazu Takahashi, Ichiro Ide, Hiroshi Murase
Cross-Lingual Retrieval of Identical News Events by Near-Duplicate Video Segment Detection. MMM (2008)
Akira Ogawa
Special Section on Information Theory and Its Applications. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (10) (2005)
Takaya Yamazato, Hiraku Okada, Masaaki Katayama, Akira Ogawa
A simple data relay process and turbo code application to wireless sensor networks. ISWCS (2004)
Shunrou Fujiwara, Akio Doi, Kouichi Matsuda, Masashi Kameda, Takashi Inoue, Akira Ogawa
Construction of the three-dimensional brain tumor model for the operative treatment simulation by 3-D active sphere. Medical Imaging: Image-Guided Procedures (2003)
Masaaki Harada, Takaya Yamazato, Hiraku Okada, Masaaki Katayama, Akira Ogawa
Performance Improvement for Coded OFDM Systems with Adaptive Interleaving in Frequency Selective Fading Channel. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (6) (2003)
Shigetaka Goto, Akira Ogawa
A Symbol Synchronizer for Multi-Carrier Spread-Spectrum Systems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (12) (2002)
Hui Shi, Masaaki Katayama, Takaya Yamazato, Hiraku Okada, Akira Ogawa
An adaptive antenna selection scheme for transmit diversity in OFDM systems. VTC Fall (2001)
Naoki Ichikawa, Masaaki Katayama, Hiraku Okada, Takaya Yamazato, Akira Ogawa
Comparison of CDMA and FDMA/TDMA in non-GEO satellite systems. ICC (2001)
Satoshi Makido, Takaya Yamazato, Hiraku Okada, Masaaki Katayama, Akira Ogawa
A design of source matched MAP receiver for image transmission. ISCAS (4) (2001)
Kentaro Inoue, Ryuta Kawashima, Motoaki Sugiura, Akira Ogawa, Thorsten Schormann, Karl Zilles, Hiroshi Fukuda
Activation in the Ipsilateral Posterior Parietal Cortex during Tool Use: A PET Study. NeuroImage 14 (6) (2001)
Yukihiro Tadokoro, Hiraku Okada, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
A new packet detection scheme in CDMA unslotted ALOHA system with successive interference cancellation. GLOBECOM (2001)
Kazuo Mori, Takehiko Kobayashi, Takaya Yamazato, Akira Ogawa
Throughput evaluation in CDMA/shared-TDD packet systems in a cellular environment. WCNC (2000)
Kohji Takeo, Shinichi Sato, Akira Ogawa
Multi-Rate Traffic Accommodation Using Multicode Transmission in CDMA Cellular Systems. ICC (1) (2000)
Kazuo Mori, Takehiko Kobayashi, Takaya Yamazato, Akira Ogawa
Transmission power control for downlinks in CDMA/shared-TDD cellular packet systems. PIMRC (2000)
Hiraku Okada, Peter M. Grant, Ian W. Band, Akira Ogawa
Application of MMSE multi-user detection to CDMA unslotted ALOHA system. PIMRC (2000)
Youssef R. Senhaji, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
Efficient channel parameter estimators for DS-CDMA systems in slow time-varying channels using a modified version of the SAGE algorithm. GLOBECOM (2000)
Masaaki Harada, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
OFDM systems with multiple trellis coded modulation. PIMRC (2000)
Y. Ikai, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
A new acquisition scheme of a DS/SS signal with transmit and receive antenna diversity. ICC (1999)
A. Sandouk, Hiraku Okada, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
Throughput improvement of a dual-class multi-code CDMA ALOHA system with modified channel load sensing protocol. ICC (1999)
Keiko Kawabe, Akihiko Matsuo, Sanya Uehara, Akira Ogawa
Interactive Variable Classification Technique to Support the Maintenance of COBOL Business Application Systems. APSEC (1999)
Keiko Kawabe, Akihiko Matsuo, Sanya Uehara, Akira Ogawa
Variable Classification Technique and Application to the Year 2000 Problem. CSMR (1998)
Akihito Morimoto, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
Problems of implementing adaptive array antennas in CDMA systems. PIMRC (1998)
Hiraku Okada, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
Queueing analysis of CDMA slotted ALOHA systems with finite buffer and finite population assumptions. ICC (1998)
Abbas Jamalipour, Masaaki Katayama, Akira Ogawa
Traffic characteristics of LEOS-based global personal communications networks. IEEE Commun. Mag. 35 (2) (1997)
Abbas Jamalipour, Akira Ogawa
Packet Admission Control in a Direct-Sequence Spread-Spectrum LEO Satellite Communications Network. IEEE J. Sel. Areas Commun. 15 (8) (1997)
Mihoko Ishizu, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
Simultaneous estimation of code and frequency of DS/SS signals of multiple-LEO-satellite communication systems. PIMRC (1997)
Koichiro Ban, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
The DS/CDMA system using transmission diversity for indoor wireless communications. PIMRC (1996)
Abbas Jamalipour, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
A modified power control scheme for remedying the effects of traffic nonuniformity in LEO satellite communications systems. Int. J. Wirel. Inf. Networks 3 (1) (1996)
Takahide Sato, Hiraku Okada, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
Throughput analysis of DS/SSMA unslotted ALOHA system with fixed packet length. IEEE J. Sel. Areas Commun. 14 (4) (1996)
Abbas Jamalipour, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
Transmit Permission Control on Spread ALOHA Packets in LEO Satellite Systems. IEEE J. Sel. Areas Commun. 14 (9) (1996)
Kumud Kashyap, Tadahiro Wada, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
The performance of CDMA system using π/4-shift QPSK and π/2-shift BPSK with the nonlinearity of HPA. PIMRC (1996)
Masato Saito, Hiraku Okada, Takahide Sato, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
Throughput improvement of CDMA slotted ALOHA system by modified channel load sensing protocol. PIMRC (1996)
Hiroki Nakamura, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
Coordinate-by-coordinate interleaved trellis coded QPSK with T-algorithm on Rayleigh fading channels. PIMRC (1995)
Shinji Okuda, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
A new block demodulator for DS/SS signal with carrier frequency offset. PIMRC (1995)
Motohiro Ichiba, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
A preliminary study of a multimedia SSMA system considering the interactions between the signals. PIMRC (1995)
Abbas Jamalipour, Masaaki Katayama, Takaya Yamazato, Akira Ogawa
Performance of an Integrated Voice/Data System in Nonuniform Traffic Low Earth-Orbit Satellite Communication Systems. IEEE J. Sel. Areas Commun. 13 (2) (1995)
Kiyoshi Toshimitsu, Takaya Yamazato, Masaaki Katayama, Akira Ogawa
A novel spread slotted Aloha system with channel load sensing protocol. IEEE J. Sel. Areas Commun. 12 (4) (1994)
Takaya Yamazato, Yasuhiko Shinkaji, Masaaki Katayama, Akira Ogawa
Near-far problem on hybrid direct-sequence/slow-frequency-hopping spread-spectrum multiple-access. PIMRC (1994)
Yasuyoshi Yokokohji, Akira Ogawa, Hitoshi Hasunuma, Tsuneo Yoshikawa
Operation Modes for Cooperating with Autonomous Functions in Intelligent Teleoperation Systems. ICRA (3) (1993)
Kazunori Inagaki, Yasuo Hirata, Fumio Takahata, Akira Ogawa, Kunihiko Niwa
International Connection of Plesiochronous Networks via TDMA Satellite Link. IEEE J. Sel. Areas Commun. 1 (1) (1983)
Fumio Takahata, Kazunori Inagaki, Yasuo Hirata, Akira Ogawa
A Digital 60 Channel Transmultiplexer: Algorithm Minimizing Multiplication Rate and Hardware Implementation. IEEE Trans. Commun. 30 (7) (1982)
Fumio Takahata, Yasuo Hirata, Akira Ogawa, Kazunori Inagaki
Development of a TDM/FDM Transmultiplexer. IEEE Trans. Commun. 26 (5) (1978)