Japanese/English

Takayuki Nozaki

Takayuki Nozaki

Associate Professor,
Department of Infomatics, Graduate School of Sciences and Technology for Innovation,
Yamaguchi University

Address: 1677-1 Yoshida, Yamaguchi, 753-8511, JAPAN
Tel: +81-83-933-5694
E-mail: tnozaki _AT_ yamaguchi-u.ac.jp

Takayuki Nozaki received the B.E. degree in computer science and the M.E. and Dr.Eng. degrees in communication engineering from the Tokyo Institute of Technology, Tokyo, Japan, in 2008, 2010, and 2012, respectively. From 2010 to 2013, he was a Research Fellow of the Japan Society for the Promotion of Science. From 2013 to 2015, he was a Research Associate with Kanagawa University. He joined Yamaguchi University, as an Assistant Professor in 2015, where he served as a Senior Lecturer from 2017 to 2020. Since 2020, he has been an Associate Professor with the Department of Informatics, Yamaguchi University, Japan. He received the Best Paper Award from the IEICE of Japan in 2018. His research interests include error-correcting codes and coding theory. He is a member of ACM, AMS, IEEE, IEICE, IPSJ, JSTS.

Awards

  1. June 2018 "Best Paper Award" The Institute of Electronics, Information and Communication Engineers (IEICE)
  2. Oct. 2014 "IEEE Information Theory Society Japan Chapter Young Researcher Best Paper Award" IEEE ITJC
  3. Feb. 2013 "Seiichi Tejima Doctoral Dissertation Award" Tokyo Institute of Technology
  4. June 2012 "Best Paper Award" Storage Research Consortium (SRC)

Journal Papers

  1. K. Nakamura, T. Nozaki, "Multiple-Insertion-Correcting Non-Binary Quantum Codes and Decoding Algorithm," IEICE Trans. on Fundamentals, vol. E108-A, no. 2, pp. 123-128, Feb. 2025 [summary]
  2. T. Nozaki, "Weight Enumerators and Cardinalities for Number-Theoretic Codes," IEEE Transaction on Information Theory, vol.68, no.11, pp.7165-7173, Nov. 2022 [summary]
  3. T. Nozaki, M. Isaka, "[Invited Survey] LDPC Codes for Communication Systems: Coding Theoretic Perspective," IEICE Trans. on Communications, vol. E105-B, no. 8, pp.894-905, Aug. 2022 [summary]
  4. R. Takemoto, T. Nozaki, "Construction and Encoding Algorithm for Maximum Run-Length Limited Single Insertion/Deletion Correcting Code," IEICE Trans. on Fundamentals, vol. E105E-A, no. 1, pp. 35-43, Jan. 2022 [summary]
  5. Y. Hanaki, T. Nozaki, "Packet-Oriented Erasure Correcting Codes by Bit-level Shift Operation and Exclusive OR," IEICE Trans. on Fundamentals, vol. E102-A, no. 12, pp. 1622-1630, Dec. 2019 [summary]
  6. T. Emoto, T. Nozaki, "Shifted Coded Slotted ALOHA: A Graph-Based Random Access with Shift Operation," IEICE Trans. on Fundamentals, vol. E102-A, no. 12, pp. 1611-1621, Dec. 2019 [summary]
  7. Y. Murayama, T. Nozaki, "Fast Serial Iterative Decoding Algorithm for Zigzag Decodable Fountain Codes by Efficient Scheduling," IEICE Trans. on Fundamentals, vol. E102-A, no. 12, pp. 1600-1610, Dec. 2019 [summary]
  8. T. Saeki, T. Nozaki, "An Improvement of Non-binary Single b-Burst of Insertion/Deletion Correcting Code," IEICE Trans. on Fundamentals, vol. E102-A, no. 12, pp. 1591-1599, Dec. 2019 [summary]
  9. T.Nozaki, "Zigzag Decodable Fountain Codes," IEICE Transaction on Fundamentals, vol. E100-A, no. 8, pp. 1693-1704, Aug. 2017
  10. N. Hirata, T. Nozaki, and M. Kawamura, "Image Watermarking Method Achieving IHC by Using PEG LDPC Code," IEICE Trans. on Information and Systems, vol. E100-D, no. 1, pp. 13-23, Jan. 2017
  11. T. Nozaki, K. Kasai, and K. Sakaniwa, "Message Passing Decoder with Decoding on Zigzag Cycles for Non-binary LDPC Codes," IEICE Transaction on Fundamentals, vol. E97-A, no. 4, pp. 975-984, Apr. 2014
  12. T. Nozaki, M. Maehara, K. Kasai, and K. Sakaniwa, "Weight Distribution for Non-binary Cluster LDPC Code Ensemble," IEICE Transaction on Fundamentals, vol. E96-A, no. 12, pp. 2382-2390, Dec. 2013
  13. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of Error Floors for Non-binary LDPC Codes over General Linear Group through q-ary Memoryless Symmetric Channels," IEICE Transaction on Fundamentals, vol. E95-A, no. 12, pp. 2113-2121, Dec. 2012
  14. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analytical Solution for Covariance Evolution for Irregular LDPC Codes," IEEE Transaction on Information Theory, vol. 58, no. 7, pp. 4770-4780, July 2012
  15. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of error floors of non-binary LDPC codes over BEC," IEICE Transaction on Fundamentals, vol. E95-A, no. 1, pp. 381-390, Jan. 2012
  16. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of stopping constellation distributions for irregular non-binary LDPC code ensemble," IEICE Transaction on Fundamentals, vol. E94-A, no. 11, pp. 2153-2160, Nov. 2011.
  17. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of error floors of non-binary LDPC codes over MBIOS channel," IEICE Transaction on Fundamentals, vol. E94-A, no. 11, pp. 2144-2152, Nov. 2011
  18. T. Nozaki, K. Kasai, T. Shibuya, and K. Sakaniwa, "Detailed evolution of degree distributions in residual graphs with joint degree distributions," IEICE Transaction on Fundamentals, vol. E91-A, no. 10, pp. 2737-2744, Oct. 2008.

Proceedings of International Conference

  1. K. Sasaki, T. Nozaki, "Insertion Correcting Algorithm for Quantum Deletion Correcting Codes Based on Quantum Reed-Solomon Codes," International Symposium on Information Theory and its Applications (ISITA2024), pp.92-97, 2024.
  2. K. Nakamura, T. Nozaki, "Decoding Algorithm Correcting Single-Insertion Plus Single-Deletion for Non-binary Quantum Codes," International Symposium on Information Theory and its Applications (ISITA2024), pp.86-91, 2024.
  3. T. Nozaki "Rate-Optimal Streaming Codes over Small Finite Fields for Burst/Random Erasure Channels," Proc. of IEEE International Symposium on Information Theory (ISIT2023), pp.1107-1111, 2023. [slide]
  4. T. Nozaki "Distance Enumerators for Number-Theoretic Codes," Proc. of IEEE International Symposium on Information Theory (ISIT2021), pp.308-313, 2021. [slide]
  5. R. Takemoto, T. Nozaki, "Encoding Algorithm for Run-Length Limited Single Insertion/Deletion Correcting Code," International Symposium on Information Theory and its Applications (ISITA2020), pp.294--298, 2020.
  6. Y. Iketo, T. Nozaki, "Encoding Algorithm of Binary and Non-binary Irregular LDPC Codes via Block Triangular Matrices with Low Weight Diagonal Submatrices," International Symposium on Information Theory and its Applications (ISITA2020), pp.225--229, 2020.
  7. T. Nozaki "Weight Enumerators for Number-Theoretic Codes and Cardinalities of Tenengolts’ Non-binary Codes," Proc. of IEEE International Symposium on Information Theory (ISIT2020), pp.729-733, 2020 [slide]
  8. T. Nozaki "Bounded Single Insertion/Deletion Correcting Codes," Proc. of IEEE International Symposium on Information Theory (ISIT2019), pp.2379-2383, 2019 [slide]
  9. T. Emoto, T. Nozaki, "Shifted Coded Slotted ALOHA," International Symposium on Information Theory and its Applications (ISITA2018), pp.291-295, 2018.
  10. Y. Murayama, T. Nozaki, "Efficient Scheduling of Serial Iterative Decoding for Zigzag Decodable Fountain Codes," International Symposium on Information Theory and its Applications (ISITA2018), pp.286-290, 2018.
  11. Y. Hanaki, T. Nozaki, "Erasure Correcting Codes by Using Shift Operation and Exclusive OR," International Symposium on Information Theory and its Applications (ISITA2018), pp.281-285, 2018.
  12. T. Saeki, T. Nozaki, "An Improvement of Non-binary Code Correcting Single b-Burst of Insertions or Deletions," International Symposium on Information Theory and its Applications (ISITA2018), pp.6-10, 2018. [slide]
  13. T. Nozaki, T. Nakano, T. Wadayama, "Analysis of Breakdown Probability of Wireless Sensor Networks with Unreliable Relay Nodes" Proc. of IEEE International Symposium on Information Theory (ISIT2017), pp.481-485, 2017 [slide]
  14. T. Nozaki "Reduction of Decoding Iterations for Zigzag Decodable Fountain Codes," Proc. International Symposium on Information Theory and its Applications (ISITA2016), pp.632-636, 2016. [slide]
  15. T. Nozaki "Cutsize Distributions of Balanced Hypergraph Bipartitions for Random Hypergraphs," Proc. of IEEE International Symposium on Information Theory (ISIT2016), pp.3018-3022, 2016. [slide]
  16. T. Nozaki, "Parallel Encoding Algortihm for LDPC Codes Based on Block-Diagonalization," Proc. of IEEE International Symposium on Information Theory (ISIT2015), pp.1911-1915, 2015. [pdf], [slide]
  17. T. Nozaki, "Fountain Codes Based on Zigzag Decodable Coding," Proc. International Symposium on Information Theory and its Applications (ISITA2014), pp.274-278, 2014. [pdf] [slide]
  18. T. Nozaki, M. Maehara, K. Kasai, and K. Sakaniwa, "Weight Distribution for Non-binary Cluster LDPC Code Ensemble," Proc. of IEEE International Symposium on Information Theory (ISIT2013), pp.2830-2834, 2013 [slide]
  19. T. Nozaki, K. Kasai, and K. Sakaniwa, "Message Passing Algorithm with MAP Decoding on Zigzag Cycles for Non-binary LDPC Codes," Proc. of IEEE International Symposium on Information Theory (ISIT2013), pp.2825-2829, 2013 [slide]
  20. K. Kasai, T. Nozaki, and K. Sakaniwa, "Spatially-Coupled Binary MacKay-Neal Codes for Channels with Non-Binary Inputs and Affine Subspace Outputs," Proc. of IEEE International Symposium on Information Theory (ISIT2012), pp.468-472, 2012
  21. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of Error Floors of Generalized Non-binary LDPC Codes over q-ary Memoryless Symmetric Channels," Proc. of IEEE International Symposium on Information Theory (ISIT2012), pp.2825-2829, 2012 [slide]
  22. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of Stopping Constellation Distribution for Irregular Non-binary LDPC Code Ensemble," Proc. of IEEE International Symposium on Information Theory (ISIT2011), pp.1106-1110, 2011 [slide]
  23. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analysis of Error Floors of Non-binary LDPC Codes over MBIOS Channel," Proc. of IEEE International Conference on Communications (ICC2011), 2011 [slide]
  24. T. Nozaki, K. Kasai, and K. Sakaniwa, "Error Floors of Non-binary LDPC Codes," Proc. of IEEE International Symposium on Information Theory (ISIT2010), pp.729-733, 2010 [slide]
  25. T. Nozaki, K. Kasai, and K. Sakaniwa, "Analytical Solution of Covariance Evolution for Regular LDPC Codes," Proc. of IEEE International Symposium on Information Theory (ISIT2009), pp.2649-2653, 2009. [slide]
  26. T. Nozaki, K. Kasai, T. Shibuya, and K. Sakaniwa, "Detailed Evolution of Degree Distributions on Residual Graphs with Joint Degree Distributions, " Proc. of IEEE International Symposium on Information Theory (ISIT2008), pp.1438-1442, 2008. [slide]

Invited Talk

  1. T. Nozaki "Weight Enumerators and Cardinalities for Non-binary VT Codes," AMS Special Session on Interactions between Combinatorics, Representation Theory, and Coding Theory, Joint Mathematics Meeting 2020 (JMM2020), Denver, Colorado, Jan. 17, 2020.
  2. T. Nozaki "Bounded Single Insertion/Deletion Correcting Code," AMS Spring Central and Western Joint Sectional Meeting, Hawaii, March 22-24, 2019
  3. T. Nozaki, "Introduction And Recent Results of Fountain Codes," The 3rd International Conference on Control, Electronics, Renewable Energy, and Communications 2017 (ICCEREC 2017), Yogyakarta, Indonesia, Sept.26-28, 2017