Ken-ichi TAKIZAWA

Overview of Research, Development, Standardization, and Regulation Activities in NICT UWB Project
Ken-ichi TAKIZAWA Huan-Bang LI Iwao NISHIYAMA Jun-ichi TAKADA Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 2996-3005
Type of Manuscript:  INVITED PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
UWB, soft spectrum adaptation (SSA), coexistence, detection and avoidance (DAA), spectrum mask, ITU-R TG1/8, radar, 
 Summary | Full Text:PDF
Online SNR and Fading Parameter Estimation for Parallel Combinatorial SS Systems in Nakagami Fading Channels
Kazuyuki UENAGA Shigenobu SASAKI Ken-ichi TAKIZAWA Jie ZHOU Shogo MURAMATSU Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/06/01
Vol. E87-A  No. 6  pp. 1495-1499
Type of Manuscript:  Special Section LETTER (Special Section on Papers Selected from 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003))
Category: 
Keyword: 
spread spectrum, multicode systems, online SNR estimation, Nakagami fading, 
 Summary | Full Text:PDF
Online SNR Estimation for Parallel Combinatorial SS Systems in Nakagami Fading Channels
Ken-ichi TAKIZAWA Shigenobu SASAKI Jie ZHOU Shogo MURAMATSU Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2847-2858
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
multi-code DS/SS, online SNR estimation, iterative decoding, Nakagami fading channels, 
 Summary | Full Text:PDF
Performance Bounds in Convolutional Coded Parallel Combinatorial SS Systems
Ken-ichi TAKIZAWA Shigenobu SASAKI Shogo MURAMATSU Jie ZHOU Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1696-1701
Type of Manuscript:  Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
multicode SS, convolutional code, iterative demodulation and decoding, 
 Summary | Full Text:PDF
Iterative Demodulation and Decoding for Parallel Combinatorial SS Systems
Ken-ichi TAKIZAWA Shigenobu SASAKI Shogo MURAMATSU Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 2991-2999
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrum, multi-code CDMA, iterative decoding, channel coding, 
 Summary | Full Text:PDF