Keiichiro SHIRAI


Spatial Compression of Sensing Information for Exploiting the Vacant Frequency Resource Using Radio Sensors
Kenichiro YAMAMOTO Osamu TAKYU Keiichiro SHIRAI Yasushi FUWA 
Publication:   
Publication Date: 2021/10/01
Vol. E104-B  No. 10  pp. 1217-1226
Type of Manuscript:  Special Section PAPER (Special Section on Dynamic Spectrum Sharing for Future Wireless Systems)
Category: 
Keyword: 
compression of sensing informationDSAcognitive radio
 Summary | Full Text:PDF

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 accessrendezvous channelchannel-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 radiodynamic spectrum accessrendezvous scheme
 Summary | Full Text:PDF