Tohru Kohda

Publication Activity (10 Years)

Years Active: 1988-2014
Publications (10 Years): 0

Top Topics

Frequency Hopping

Video Watermarking

Uncalibrated Photometric Stereo

Top Venues

Int. J. Bifurc. Chaos

Publications

Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
Phase-tuned layers with multiple 2D SS codes realize 16PSK communication. WCNC (2014)
Yutaka Jitsumatsu, Tohru Kohda
Digital Phase Updating Loop and Delay-Doppler Space Division Multiplexing for Higher Order MPSK. MACOM (2014)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
Recovering noncoherent MPSK signal with unknown delay and Doppler using its ambiguity function. ITST (2013)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
PLL-free receiver for Gabor division/spread spectrum system. WiMob (2013)
Ali Gamal Hafez, Mostafa Rabie, Tohru Kohda
Seismic noise study for accurate P-wave arrival detection via MODWT. Comput. Geosci. 54 (2013)
Ali Gamal Hafez, Mostafa Rabie, Tohru Kohda
Detection of precursory signals in front of impulsive P-waves. Digit. Signal Process. 23 (3) (2013)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
Gabor Division/Spread Spectrum System Is Separable in Time and Frequency Synchronization. VTC Fall (2013)
Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara
Spread spectrum-based cooperative and individual time-frequency synchronization. ISWCS (2013)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
Signals that can be easily time-frequency synchronized from their ambiguity function. ITW (2013)
Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara
Delay-Doppler Space Division-Based Multiple-Access Solves Multiple-Target Detection. MACOM (2013)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
Frequency synchronisation using SS technique. ISWCS (2012)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
Frequency-division spread-spectrum makes frequency synchronisation easy. GLOBECOM (2012)
Tohru Kohda, Yoshihiko Horio, Yoichiro Takahashi, Kazuyuki Aihara
Beta encoders: Symbolic Dynamics and Electronic Implementation. Int. J. Bifurc. Chaos 22 (9) (2012)
Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara
Welch Bound for Bandlimited and Timelimited Signals. SETA (2012)
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
2D Markovian SS codes flatten time-frequency distribution of signals in asynchronous Gabor division CDMA systems. ICASSP (2011)
Ali Gamal Hafez, Muhammad Tahir Abbas Khan, Tohru Kohda
Clear P-wave arrival of weak events and automatic onset determination using wavelet filter banks. Digit. Signal Process. 20 (3) (2010)
Ali Gamal Hafez, Tahir Abbas Khan, Tohru Kohda
Earthquake onset detection using spectro-ratio on multi-threshold time-frequency sub-band. Digit. Signal Process. 19 (1) (2009)
Tohru Kohda, Satoshi Hironaka, Kazuyuki Aihara
Negative Beta Encoder CoRR (2008)
Nobuoki Eshima, Tohru Kohda
Low-Complexity Code Acquisition Method in DS/CDMA Communication Systems: Application of the Maximum Likelihood Method to Propagation Delay Estimation. IEICE Trans. Commun. (5) (2008)
Yutaka Jitsumatsu, Tohru Kohda
Prolate spheroidal wave functions induce Gaussian chip waveforms. ISIT (2008)
Yutaka Jitsumatsu, Tohru Kohda
Quasi-Orthogonal Multi-Carrier CDMA. GLOBECOM (2008)
Yutaka Jitsumatsu, Tohru Kohda
Welch Bound for FIR Lowpass Filtered Sequences. ISIT (2007)
Ryuichi Hane, Tohru Kohda
Cryptanalysis of Chaos-Based ElGamal Public-Key Encryption. Int. J. Bifurc. Chaos 17 (10) (2007)
Asuka Ono, Tohru Kohda
Solvable Three-Dimensional Rational Chaotic Map Defined by Jacobian Elliptic Functions. Int. J. Bifurc. Chaos 17 (10) (2007)
Nobuoki Eshima, Tohru Kohda, Minoru Tabata
Statistical solution to the capacity problem in direct-sequence code-division multiple-access communication systems. IMA J. Math. Control. Inf. 24 (3) (2007)
Yutaka Jitsumatsu, Tohru Kohda
Chip-Asynchronous Version of Welch Bound: Gaussian Pulse Improves BER Performance. SETA (2006)
Yutaka Jitsumatsu, Tahir Abbas Khan, Tohru Kohda
Gaussian Chip Waveform Together with Markovian Spreading Codes Improve BER Performance in Chip-Asynchronous CDMA Systems. GLOBECOM (2006)
Nobuoki Eshima, Tohru Kohda
Statistical approach to the code acquisition problem in direct-sequence spread-spectrum communication systems. IMA J. Math. Control. Inf. 23 (2) (2006)
Yutaka Jitsumatsu, Tohru Kohda
Gaussian chip shaping enhances the superiority of Markovian codes in DS/CDMA systems. ISCAS (2006)
Yutaka Jitsumatsu, Tohru Kohda
A lower bound on the mean squared correlations for band-limited asynchronous DS/CDMA systems. ISIT (2006)
Aya Kato, Tohru Kohda
Solvable 2-dimensional rational chaotic map defined by Jacobian elliptic functions. ISCAS (2) (2005)
Tohru Abbas Khan, Nobuoki Eshima, Yutaka Jitsumatsu, Tohru Kohda
A novel code acquisition algorithm and its application to Markov spreading codes. ISCAS (3) (2005)
Tahir Abbas Khan, Nobuoki Eshima, Yutaka Jitsumatsu, Tohru Kohda
Probability Calculation. IEICE Trans. Commun. (10) (2005)
Tohru Kohda
Special Section on Nonlinear Theory and its Applications. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (10) (2005)
Yutaka Jitsumatsu, Tohru Kohda
Design of code-matched receiver for DS/CDMA communications. ISCAS (2) (2005)
Nobuoki Eshima, Yutaka Jitsumatsu, Tohru Kohda
Markovian SS codes imply inversion-free code acquisition in asynchronous DS/CDMA systems. ISCAS (4) (2004)
Tohru Kohda
Statistical properties of chaotic sequences generated by Jacobian elliptic Chebyshev rational maps. ISCAS (5) (2004)
Tomohiro Yoshimura, Tohru Kohda
Resonance properties of Chebyshev chaotic sequences. ISCAS (4) (2004)
Kiyoaki Yoshida, Yasumasa Sujaku, Tohru Kohda
-Matched Digraphs. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2003)
Yasutada Oohama, Mariko Suemitsu, Tohru Kohda
Construction of a Piecewise Linear One-Dimensional Map Generating an Arbitrary Prescribed Tree Source. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2003)
Kiyoaki Yoshida, Yasumasa Sujaku, Tohru Kohda
Number of mutual connections in neighborhoods and its application to self-diagnosable systems. Inf. Process. Lett. 88 (3) (2003)
Tohru Kohda, Yutaka Jitsumatsu, Tahir Abbas Khan
Spread-spectrum Markovian-code acquisition in asynchronous DS/CDMA systems. ISCAS (3) (2003)
Kiyoaki Yoshida, Tohru Kohda, Yasumasa Sujaku
Self-Organizing Systems with Self-Diagnosability. DSN (2002)
Tohru Kohda
Information sources using chaotic dynamics. Proc. IEEE 90 (5) (2002)
Yasutada Oohama, Tohru Kohda
Statistical Properties of Chaotic Binary Sequences Generated by One-Dimensional Maps. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2002)
Tohru Kohda
Constant Sum Implies Statistical Independence of Chaotic Sequences. SETA (2001)
Tohru Kohda, Hiroshi Fujisaki, Shigeru Ideue
On distributions of correlation values of spreading sequences based on Markov information sources. ISCAS (2000)
Tohru Kohda, Hiroshi Fujisaki
The Jacobian elliptic Chebyshev rational maps can generate sequences of i.i.d. random variables. ISCAS (2000)
Tohru Kohda
Sequences of I.I.D. Binary Random Variables Using Chaotic Dynamics. SETA (1998)
Tohru Kohda, Akio Tsuneda
Statistics of chaotic binary sequences. IEEE Trans. Inf. Theory 43 (1) (1997)
Eitaro Nishihara, Hiroyuki Kura, Gen Kubota, Tohru Kohda
Control method for preloading with priority information in an integrated radiology information system/picture archiving and communication system. J. Digit. Imaging 10 (1) (1997)
Kenji Murao, Tohru Kohda
Switched capacitor circuit for 1/f noise generation using a power-law circuit. Int. J. Circuit Theory Appl. 22 (3) (1994)
Tohru Kohda
A Simple Discriminator for Identifying Faults in Highly Structured Diagnosable Systems. J. Circuits Syst. Comput. 4 (3) (1994)
Tohru Kohda, Ken-ichi Abiru
A recursive procedure for optimally designing a hybrid fault diagnosable system. FTCS (1988)