Mai OHTA


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 networksinformation collectionOFDMtransmission power control
 Summary | Full Text:PDF(2.4MB)

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 radiorendezvous channelChannel Occupancy Rate (COR)
 Summary | Full Text:PDF(1.9MB)

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 radiocooperative sensingorthogonal narrowband signalspectrum sharingaggregated interferencetransmit power design
 Summary | Full Text:PDF(1.6MB)

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 radiocooperative sensingorthogonal narrrowband signalspectrum sharing
 Summary | Full Text:PDF(501.8KB)