Mai OHTA

Optimal Construction of Access Rate to Superior Channel in Rendezvous Channel Based on Channel-Occupancy Ratio
Yuki NISHIO Osamu TAKYU Hayato SOYA Keiichiro SHIRAI Mai OHTA Takeo FUJII 
Publication:   
Publication Date: 2021/01/01
Vol. E104-A  No. 1  pp. 243-252
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
dynamic spectrum access, rendezvous channel, channel-occupancy ratio, 
 Summary | Full Text:PDF
Fast Rendezvous Scheme with a Few Control Signals for Multi-Channel Cognitive Radio
Hayato SOYA Osamu TAKYU Keiichiro SHIRAI Mai OHTA Takeo FUJII Fumihito SASAMORI Shiro HANDA 
Publication:   
Publication Date: 2018/07/01
Vol. E101-B  No. 7  pp. 1589-1601
Type of Manuscript:  Special Section PAPER (Special Section on Communication Quality in Wireless Networks)
Category: 
Keyword: 
cognitive radio, dynamic spectrum access, rendezvous scheme, 
 Summary | Full Text:PDF
Fusion Center Controlled MAC Protocol for Physical Wireless Parameter Conversion Sensor Networks (PHY-C SN)
Koji KAKINUMA Mai OHTA Osamu TAKYU Takeo FUJII 
Publication:   
Publication Date: 2017/07/01
Vol. E100-B  No. 7  pp. 1105-1114
Type of Manuscript:  Special Section PAPER (Special Section on Smart Radio and Its Applications in Conjunction with Main Topics of SmartCom)
Category: Network
Keyword: 
wireless sensor networks, information collection, OFDM, transmission power control, 
 Summary | Full Text:PDF
Optimization of Learning Time for Learning-Assisted Rendezvous Channel in Cognitive Radio System
Osamu TAKYU Takayuki YAMAKITA Takeo FUJII Mai OHTA Fumihito SASAMORI Shiro HANDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/02/01
Vol. E98-B  No. 2  pp. 360-369
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
cognitive radio, rendezvous channel, Channel Occupancy Rate (COR), 
 Summary | Full Text:PDF
Cooperative Sensing with Distributed Pre-Detection for Gathering Sensing Information on Shared Primary Spectrum
Mai OHTA Takeo FUJII Kazushi MURAOKA Masayuki ARIYOSHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/11/01
Vol. E95-A  No. 11  pp. 1980-1990
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Communication Theory and Signals
Keyword: 
cognitive radio, cooperative sensing, orthogonal narrowband signal, spectrum sharing, aggregated interference, transmit power design, 
 Summary | Full Text:PDF
A Novel Method for Information Gathering by Using Orthogonal Narrowband Signal for Cooperative Sensing in Cognitive Radio
Mai OHTA Takeo FUJII Kazushi MURAOKA Masayuki ARIYOSHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12  pp. 3625-3634
Type of Manuscript:  Special Section PAPER (Special Section on Dynamic Spectrum Access)
Category: Spectrum Sensing
Keyword: 
cognitive radio, cooperative sensing, orthogonal narrrowband signal, spectrum sharing, 
 Summary | Full Text:PDF