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IEICE Trans

Ryo TAKAI

Computational Complexity of Yajisan-Kazusan and Stained Glass
Chuzo IWAMOTO Ryo TAKAISHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2025/03/01
Vol. E108-D  No. 3  pp. 201-207
Type of Manuscript:  Special Section PAPER (Special Section on Foundations of Computer Science —Mathematical Foundations of Computer Science and Its Applications—)
Category: 
Keyword: 
Yajisan-Kazusan, Stained Glass, pencil puzzle, computational complexity, NP-complete, 
 Summary | Full Text:PDF
Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal
Hiroyuki ODANI Shoya UCHIDA Ryo TAKAI Yukitoshi SANADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/07/01
Vol. E98-B  No. 7  pp. 1381-1389
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
spectrum sensing, delayed correlation, 
 Summary | Full Text:PDF
Window Functions for Frame Correlation Reduction in Overlapped FFT Based Energy Detection
Ryo TAKAI Shoya UCHIDA Yukitoshi SANADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/03/01
Vol. E98-B  No. 3  pp. 485-493
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
cognitive radio, overlapped FFT, spectrum sensing, 
 Summary | Full Text:PDF