YUTAKA JITSUMATSU | Last modified date：2016.05.21 |

Associate Professor /
Mathematical Informatics

Department of Informatics

Faculty of Information Science and Electrical Engineering

Department of Informatics

Faculty of Information Science and Electrical Engineering

Graduate School

Undergraduate School

E-Mail

Homepage

##### http://www.me.inf.kyushu-u.ac.jp/en/member.html

Phone

092-802-3624

Fax

092-802-3624

Academic Degree

Ph. D (Engineering)

Field of Specialization

Communication Theory, Multicarrier-CDMA, OFDM, spreading code design

Outline Activities

My research interests include CDMA, UWB, OFDM communications. I submit my research results to IEEE-sponsored conferences, such as ISCAS, ISIT, ISSSTA, and Globecom, which have been accepted with high probability. I also attend IEICE conferences.

Research

**Research Interests**

- Computation for error exponent in Converse Theorem for discrete memoryless channels

keyword : Correct decoding Probability, Error exponent, Iterative Algorithm

2014.03～2017.03. - Signal Processing for RADAR system based on Compressed Sensing

keyword : Compressed Sensing, Rate of Innovation, Prony's frequency estimation method

2014.04～2017.03. - quantization error of beta-encoders

keyword : analog-digital/digital-analog converters, beta-expansion, pulse code modulation (PCM), sigma-delta converter, quantization error

2012.10～2014.03. - multi-user detection and spin glass

keyword : spin glass, statistical phisics, random matrix, neural networks, associative memory

2005.04～2014.03. - Timing and frequency synchronization using two dimensional spreading code signal.

keyword : Ambiguity function, Wigner distribution, spread spectrum system

2001.04.

**Current and Past Project**

- The purpose of the Project entitled "the Mathematical Theory for Modelling Complex Systems and Its Transdisciplinary Applications in Science and Technology" is to develop a mathematical theory that will facilitate the modelling of complex systems and the creation of transdisciplinary applications of this theory in science and technology. This will be done through exploiting advances in mathematical engineering (a discipline originally developed in Japan) and chaos engineering (a field aimed at creating various applications based on deterministic chaos, fractals and complex networks).

**Academic Activities**

**Papers**

1. | YUTAKA JITSUMATSU, Kazuya Matsumura, A β-ary to binary conversion for random number generation using a β encoder, Nonlinear Theory and Its Applications, IEICE, 7, 1, 2016.01, [URL]. |

2. | YUTAKA JITSUMATSU, Tohru Kohda, Digital Phase Updating Loop and Delay-Doppler Space Division Multiplexing for Higher Order MPSK, 7th Int. Workshop Multiple Access Communications, 8715, 2014.12, [URL]. |

3. | YUTAKA JITSUMATSU, Tatsuro Higuchi, Masahiro Hashiguchi, Optimal Sign Patterns for a Generalized Schmidl-Cox Method, Sequences and Their Applications 2014, 8865, 2014.11, [URL]. |

4. | YUTAKA JITSUMATSU, Tohru Kohda, Kazuyuki Aihara, Delay-Doppler Space Division-based Multiple-Access Solves Multiple-Target Detection, Lecture Notes in Computer Science, 8310, 39-53, 2013.12, [URL]. |

5. | YUTAKA JITSUMATSU, Welch Bound for Bandlimited and Timelimited Signals, Lecture Notes in Computer Science, 7280, 269-278, 2012.09. |

6. | Y. Jitsumatsu and T. Kohda, Asynchrony, Markov, interference, RIMS Kokyuroku, 1742, 165-179, 2011.05, [URL]. |

7. | Yutaka Jitsumatsu and Tohru Kohda, Chip-Asynchronous Version of Welch Bound: Gaussian Pulse Improves BER Performance,, Sequences and Their Applications - SETA 2006, vol.4086, pp.351-363, 2006.09. |

8. | Yutaka Jitsumatsu, Tahir Abbas Khan and Tohru Kohda, Reduction of MAI in Asynchronous DS/CDMA Systems Using Post-Filter, IEICE Tranactions on Fundamentals, E87A, 9, Vol. E87-A, No.9, pp. 2301-2307, 2004.09. |

9. | Jitsumatsu, Y.; Kohda, T., Bit error rate of incompletely synchronised correlator in asynchronous DS/CDMA system using SS Markovian codes, Electronics Letters, 38, 9, Volume: 38 Issue: 9, Page(s): 415 -416, 2002.04. |

**Presentations**

1. | YUTAKA JITSUMATSU, Yasutada Oohama, Computing the Optimal Exponent of Correct Decoding for Discrete Memoryless Sources, Proc. Int. Sympo. Inform. Theory, 2016.07.13, [URL]. |

2. | Shuntaro Ito, Dongshin Yang, YUTAKA JITSUMATSU, Estimation of Multi-path Channels by Using the Annihilating Filter Method, 2015 IEEE 82nd Vehicular Technology Conference, 2015.09.07, [URL]. |

3. | Yasutada Oohama, YUTAKA JITSUMATSU, A New Iterative Algorithm for Computing the Optimal Exponent of Correct Decoding for Discrete Memoryless Channels, Int. Sympo. Inform. Theory 2015, 2015.06.16, [URL]. |

4. | YUTAKA JITSUMATSU, Masahiro Hashiguchi, Tatsuro Higuchi, Optimal Sign Patterns for a Generalized Schmidl-Cox Method, Sequences and Their Applications 2014, 2014.11.28, [URL]. |

5. | Tatsuro Higuchi, YUTAKA JITSUMATSU, Performance Analysis of a Time Synchronization Method for Multipath Fading Channels with Doppler Shift, 17th Int. Symp. on Wireless Personal Multimedia Commun. (WPMC2014), 2014.09.08, [URL]. |

6. | YUTAKA JITSUMATSU, Tohru Kohda, Kazuyuki Aihara, Phase-tuned layers with multiple 2D SS codes realize 16PSK communication, 2014 IEEE Wireless Communications and Networking Conference , 2014.04.08. |

7. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, Delay-Doppler Space Division- based Multiple-Access Solves Multiple-Target Detection , 6th International Workshop on Multiple Access Communications(MACOM2013), 2013.12.16, [URL]. |

8. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, Recovering noncoherent MPSK signal with unknown delay and Doppler using its ambiguity function, 4th International Workshop on Recent Advances in Broadband Access Networks(RABAN2013), 2013.11.06, [URL]. |

9. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, PLL-free Receiver for Gabor Division/Spread Spectrum System, The 9th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob2013), 2013.10.09, [URL]. |

10. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, Signals that can be easily time-frequency synchronized from their ambiguity function , IEEE Information Theory Workshop 2013(ITW2013), 2013.09.12, [URL]. |

11. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, Gabor Division/Spread Spectrum System is Separable in Time and Frequency Synchronization , 2013 IEEE 78th Vehicular Technology Conference: VTC2013-Fall, 2013.09.03, [URL]. |

12. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, Spread Spectrum-Based Cooperative and individual time-frequency synchronization , The Tenth International Symposium on Wireless Communication Systems(ISWCS2013) , 2013.08.29, [URL]. |

13. | Yutaka Jitsumatsu, Tohru Kohda, Kazuyuki Aihara, Separability of Time-Frequency Synchronization , International Radar Symposium 2013 (IRS2013) , 2013.06.19, [URL]. |

14. | YUTAKA JITSUMATSU, Tohru Kohda, Kazuyuki Aihara, Frequency-division spread-spectrum makes frequency synchronisation easy, IEEE Globecom 2012, 2012.12.01. |

**Membership in Academic Society**

- Society of Information Theory and Its Applications (SITA)

**Awards**

- Contribution as an associate editor for English journal

Your contribution to Engineering Science Society (ESS) in IEICE is highly appreciated. - The Best Paper award at the 6th International Workshop on Multiple Access Communications(MACOM-2013)

Unauthorized reprint of the contents of this database is prohibited.