Ken UMENO


Performance Evaluation of CDMA Using Chaotic Spreading Sequence with Constant Power in Indoor Power Line Fading Channels
Ryo TAKAHASHI Ken UMENO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/07/01
Vol. E97-A  No. 7  pp. 1619-1622
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
chaosCDMAfadingpower line channel
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Performance Evaluation of Band-Limited Baseband Synchronous CDMA Using Orthogonal ICA Sequences
Ryo TAKAHASHI Ken UMENO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/03/01
Vol. E93-A  No. 3  pp. 577-582
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
independent component analysis (ICA)chaoscode division multiple access (CDMA)spreading sequenceband-limited signals
 Summary | Full Text:PDF(233.9KB)

Performance Analysis of Complex CDMA Using Complex Chaotic Spreading Sequence with Constant Power
Ryo TAKAHASHI Ken UMENO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3394-3397
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
chaoscomplex code division multiple accessspreading sequence
 Summary | Full Text:PDF(92.8KB)

Construction of Optimal Chaotic Spreading Sequence Using Lebesgue Spectrum Filter
Ken UMENO Akihiro YAMAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/04/01
Vol. E85-A  No. 4  pp. 849-852
Type of Manuscript:  Special Section LETTER (Special Section of Selected Papers from the 14th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
chaosCDMAergodic theorydigital filterLebesgue spectrum
 Summary | Full Text:PDF(181.9KB)