Takeshi TOMIZAWA

Throughput Enhancement with ACK/NACK Mechanism in Short-Range Millimeter-Wave Communication Systems
Ryoko MATSUO Tomoya TANDAI Takeshi TOMIZAWA Hideo KASAMI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/08/01
Vol. E96-B  No. 8  pp. 2162-2172
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
60 GHz millimeter-wave (mmWave), ACK/NACK, 
 Summary | Full Text:PDF
A Study on Cognitive Radio Coexisting with Cellular Systems
Tomoya TANDAI Tomoya HORIGUCHI Noritaka DEGUCHI Takeshi TOMIZAWA Tazuko TOMIOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 38-52
Type of Manuscript:  Special Section PAPER (Special Section on Cognitive Radio and Spectrum Sharing Technology)
Category: Cognitive Network
Keyword: 
cognitive radio, coexistence, cellular systems, uplink channel, uplink slot, carrier sense, 
 Summary | Full Text:PDF
Proposal of an A/D Converter Clipping Noise Suppression Technique for High-Sensitivity Carrier-Sensing of Cognitive Radio Transceiver
Tazuko TOMIOKA Ren SAKATA Tomoya HORIGUCHI Takeshi TOMIZAWA Kaoru INOUE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 119-126
Type of Manuscript:  Special Section PAPER (Special Section on Cognitive Radio and Spectrum Sharing Technology)
Category: Enabling Technology
Keyword: 
cognitive radio, carrier-sensing, analogue-to-digital converter, clipping, interpolation, 
 Summary | Full Text:PDF