UMEHARA, Daisuke

Professor

Faculty of Information and Human Sciences
Kyoto Institute of Technology
Kyoto 606-8585, Japan

Phone: +81-75-724-7471
Fax: +81-75-724-7471
Email:
Office: Bld. 7, Room 505

---

Areas of Interest:

• Modulation and coding
• Medium access control
• Protocol and algorithm
• Modeling and model checking
• EMC

Representative Publications:

• Pascal Nkurunziza and Daisuke Umehara,
  Attention-based HAPS-to-ground nodes optimization for differential privacy towards secure semantic communications,
  Neural Computing and Applications, vol. 38, no. 105, DOI: 10.1007/s00521-026-11851-4, Mar 2026.
  
• Pascal Nkurunziza and Daisuke Umehara,
  DeepSTAS: DL-assisted Semantic Transmission Accuracy Enhancement Through an Attention-driven HAPS Relay System,
  Technologies 2025, 13, 137, DOI: 10.3390/technologies13040137, Apr 2025.
  [Open Access]
• Mana Yoshida and Daisuke Umehara,
  Performance and design of uplink multiuser massive MIMO with low-resolution ADCs,
  IEICE Communications Express, vol. 11, no. 5, DOI: 10.1587/comex.2022XBL0005, May 2022.
  [Open Access]
• Daisuke Umehara,
  Digital RoHR with Lloyd-Max Quantization for Distributed Collaborative MIMO-OFDM Reception,
  ITE Transactions on Media Technology and Applications, vol. 8, no. 1, pp. 11-17, DOI: 10.3169/mta.8.11, Jan 2020.
  [Open Access]
• Daisuke Umehara and Takeyuki Shishido,
  Controller Area Network and Its Reduced Wiring Technology,
  IEICE Transactions on Communications (Advance Publication), pp. 1-15, DOI: 10.1587/transcom.2018ANI0004, January 2019.
  [Open Access]
• Satoshi Denno and Daisuke Umehara,
  Adaptive configuration of forward channels for terminal collaborative reception,
  ITE Transactions on Media Technology and Applications, vol. 6, no. 1, pp. 82-90, DOI: 10.3169/mta.6.82, January 2018.
  
• Satoshi Denno, Akihito Taya, Hidekazu Murata, Daisuke Umehara, Koji Yamamoto, Susumu Yoshida, and Masahiro Morikura,
  Linear precoding with reduced channel state information for base station cooperation,
  IEICE Transactions on Communications (Japanese Edition), vol. J100-B, no. 3, pp. 270-279, DOI: 10.14923/transcomj.2016JBP3048, March 2017 (in Japanese).
  
• Satoshi Denno and Daisuke Umehara,
  Simplified maximum likelihood detection with unitary precoding for XOR physical layer network coding,
  IEICE Transactions on Communications, vol. E100-B, no. 1, pp. 167-176, DOI: 10.1587/transcom.2016EBP3064, January 2017.
  
• Shuhei Ueno, Daisuke Umehara, and Satoshi Denno,
  PCM-RoHR for collaborative interference canceller and its performance evaluation,
  The Journal of The Institute of Image Information and Television Engineers, vol. 71, no. 2, pp. J74-J79, DOI: 10.3169/itej.71.J74, January 2017 (in Japanese).
  
• Daisuke Umehara, Hidekazu Murata, and Satoshi Denno,
  Success prioritized distributed coordination function,
  IEICE Communications Express, vol. 5, no. 9, pp. 303-308, DOI: 10.1587/comex.2016XBL0083, September 2016.
  
• Daisuke Nose, Daisuke Umehara, and Koichiro Wakasugi,
  A MIMO radar code construction based on space-time coded complementary codes,
  IEICE Communications Express, vol. 5, no. 7, pp. 229-235, DOI: 10.1587/comex.2016XBL0060, July 2016.
  
• Shingo Nitta, Daisuke Umehara, Motoki Mizuma, and Koichiro Wakasugi,
  High rate and large capacity CAN by short pulse line codes,
  IEICE Transactions on Communications (Japanese Edition), vol. J99-B, no. 3, pp. 193-205, March 2016 (in Japanese).
  
• Akihito Taya, Satoshi Denno, Koji Yamamoto, Masahiro Morikura, Daisuke Umehara, Hidekazu Murata, and Susumu Yoshida,
  An iterative MIMO receiver employing virtual channels with a turbo decoder for OFDM wireless systems,
  IEICE Transactions on Communications, vol. E98-B, no. 5, pp. 878-889, DOI: 10.1587/transcom.E98.B.878, May 2015.
  
• Suguru Saito, Masato Taniguchi, Ryo Shinohara, Hiroki Sato, Hidekazu Murata, Susumu Yoshida, Koji Yamamoto, Daisuke Umehara, Satoshi Denno, and Masahiro Morikura,
  Experimental performance evaluation of multi-user MIMO system with low-complexity user selection schemes in an actual indoor environment,
  IEICE Transactions on Communications (Japanese Edition), vol. J97-B, no. 2, pp. 162-173, February 2014 (in Japanese).
  
• Hidekazu Murata, Susumu Yoshida, Koji Yamamoto, Daisuke Umehara, Satoshi Denno, and Masahiro Morikura,
  Software radio-based distributed multi-user MIMO testbed: Towards green wireless communications,
  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E96-A, no. 1, pp. 247-254, DOI: 10.1587/transfun.E96.A.247, January 2013.
  
• Satoshi Denno, Daisuke Umehara, and Masahiro Morikura,
  A least bit error rate adaptive array for multilevel modulations,
  IEICE Transactions on Communications, vol. E95-B, no. 1, pp. 69-76, DOI: 10.1587/transcom.E95.B.69, January 2012.
  
• Ryota Ohnishi, Satoshi Denno, Daisuke Umehara, and Masahiro Morikura,
  Complexity reduction methods for virtual layered space time receivers,
  IEICE Transactions on Communications (Japanese Edition), vol. J94-B, no. 12, pp. 1585-1594, December 2011 (in Japanese).
  
• Jun Imamura, Satoshi Denno, Daisuke Umehara, and Masahiro Morikura,
  A virtual layered space-frequency receiver architecture with iterative decoding,
  IEICE Transactions on Communications, vol. E94-B, no. 7, pp. 1994-2002, DOI: 10.1587/transcom.E94.B.1994, July 2011.
  
• Daisuke Umehara, Satoshi Denno, Masahiro Morikura, and Takatoshi Sugiyama,
  Performance analysis of slotted ALOHA and network coding for single-relay multi-user wireless networks,
  Elsevier Ad Hoc Networks, vol. 9, no. 2, pp. 164-179, DOI: 10.1016/j.adhoc.2010.07.005, March 2011.
  
• Masoud Ardakani, Giulio Colavolpe, Klaus Dostert, Hendrik C. Ferreira, Dario Fertonani, Theo G. Swart, Andrea M. Tonello, Daisuke Umehara, and A. J. Han Vinck,
  Digital Transmission Techniques,
  In: Hendrik C. Ferreira, Lutz Lampe, John Newbury, and Theo G. Swart, Eds.,
  Power Line Communications: Theory and Applications for Narrowband and Broadband Communications over Power Lines,
  WILEY, ISBN 978-0-470-74030-9, 2010, pp. 195-310.
  
• Daisuke Umehara, Satoshi Denno, Masahiro Morikura, and Takatoshi Sugiyama,
  Achievable region in slotted ALOHA throughput for one-relay two-hop wireless network coding,
  In: Jun Zhang, Shiwen Mao, Scott F. Midkiff, and Hua Zhu, Eds., Ad Hoc Networks, LNICST, Springer, ISBN 978-3-642-11722-0, 2010, pp. 376-391.
  
• Chun-Hsiang Huang, Daisuke Umehara, Satoshi Denno, Masahiro Morikura, and Takatoshi Sugiyama,
  Enhancement of CSMA/CA and network coding in single-relay multi-user wireless networks,
  IEICE Transactions on Communications, vol. E93-B, no. 12, pp. 3371-3380, DOI: 10.1587/transcom.E93,B.3371, December 2010.
  
• Satoshi Denno, Daisuke Umehara, and Masahiro Morikura,
  Performance analysis of adaptive arrays based on least bit error rate algorithm,
  IEICE Transactions on Communications (Japanese Edition), vol. J93-B, no. 9, pp. 1249-1258, September 2010 (in Japanese).
  
• Taro Hayasaki, Daisuke Umehara, Satoshi Denno, and Masahiro Morikura,
  A Simulator of Periodically Switching Channels for Power Line Communications,
  In: Chonggang Wang Ed., Access Nets, LNICST, Springer, ISBN 978-3-642-04647-6, 2009, pp. 162-175.
  
• Hirofumi Maruyama, Satoshi Denno, Daisuke Umehara, and Masahiro Morikura,
  Successive receiver architecture with virtual channel for layered space time communications,
  IEICE Transactions on Communications (Japanese Edition), vol. J92-B, no. 10, pp. 1677-1686, October 2009 (in Japanese).
  
• Koichiro Hashimoto, Satoshi Denno, Daisuke Umehara, and Masahiro Morikura,
  Parallel FFT equalization for fast fading channels,
  IEICE Transactions on Communications (Japanese Edition), vol. J92-B, no. 7, pp. 1174-1184, July 2009 (in Japanese).
  
• Daisuke Umehara, Tomoya Hirano, Satoshi Denno, Masahiro Morikura, and Takatoshi Sugiyama,
  Wireless network coding in slotted ALOHA with two-hop unbalanced traffic,
  IEEE Journal on Selected Areas in Communications, vol. 27, no. 5, pp. 647-661, DOI: 10.1109/JSAC.2009.090607, June 2009.
  
• Daisuke Umehara, Taro Hayasaki, Satoshi Denno, and Masahiro Morikura,
  Influences of periodically switching channels synchronized with power frequency on PLC equipment,
  Journal of Communications, vol. 4, no. 2, pp. 108-118, March 2009.
  
• Yuki Fujimura, Daisuke Umehara, and Satoshi Denno,
  Frequency domain equalization with mitigation of fast fading distortion,
  Transactions of IEICE B, vol. J91-B, no. 3, pp. 250-259, March 2008 (in Japanese).
  
• Ryohei Yamato, Daisuke Umehara, Yoshiteru Morihiro, Taku Noguchi, and Makoto Kawai,
  A decoding method for Tornado-type codes utilizing error packets,
  IEICE Transactions on Communications (Japanese Edition), vol. J89-B, no. 5, pp. 763-772, May 2006 (in Japanese).
  
• Takuya Sakamoto, Daisuke Umehara, Yoshiteru Morihiro and Makoto Kawai,
  A synchronization method for synchronous CDMA broadband communication systems with GEO satellites,
  IEICE Transactions on Communications, vol. E87-B, no. 8, pp. 2111-2118, August 2004.
  
• Shigeru Asakura, Daisuke Umehara, and Makoto Kawai,
  Distributed location estimation method for mobile terminals based on SOM algorithm,
  IEICE Transactions on Communications (Japanese Edition), vol. J85-B, no. 7, pp. 1042-1050, July 2002 (in Japanese).
  
• Koji Hosaka, Takeshi Goya, Daisuke Umehara, and Makoto Kawai,
  An efficient method for network topology identification based on SOM algorithm,
  Transactions IEE of Japan, vol. 122-C, no. 2, pp. 208-216, February 2002. (in Japanese)
  
• Daisuke Umehara and Tomohiko Uyematsu,
  One-point algebraic geometric codes from Artin-Schreier extensions of Hermitian function fields,
  IEICE Transactions on Fundamentals, vol. E81-A, no. 10, pp. 2025-2031, October 1998.
• Daisuke Umehara, Shinji Miura, Tomohiko Uyematsu, and Eiji Okamoto,
  On optimality of Feng-Rao designed minimum distance for Hermitian codes constructed by weight order bases on pole order,
  IEICE Transactions on Fundamentals (Japanese Edition), vol. J81-A, no. 4, pp. 733-742, April 1998 (in Japanese).
  

Academic Degree: Doctor of Engineering (Tokyo Institute of Technology)

Academic Society:

• IEEE, Member
• Communications Society
• Information Theory Society
• Signal Processing Society
• Vehicular Technology Society
• Consumer Electronics Society
• IEICE, Senior Member
• Communications Society
• Engineering Sciences Society
• Inforamtion and Systems Society

---

UMEHARA Daisuke