NCKUEE Faculty Data
Chinese Version
Professor Chao-Yu Chen
Address
EE Building 9F R92903
Email
TEL
+886-6-2757575 ext.63328
Lab Weblink
Signal Processing And Code dEsign for Communications (SpaceComm)
(R92983&92922/ext.62400-1683)
Background
Educations
2009/07
Ph.D. in Communications Engineering, National Tsing Hua University, Taiwan
2002/07
M.S. in Communications Engineering, National Tsing Hua University, Taiwan
2000/07
B.S. in Electrical Engineering, National Tsing Hua University, Taiwan
Experiences
2023.08 - present
Director, Institute of Computer and Communication Engineering, National Cheng Kung University
2023.08 - present
Professor, Department of Electrical Engineering, National Cheng Kung University
2022.08 - 2023.07
Associate Professor, Department of Electrical Engineering, National Cheng Kung University
2022.08 - present
Jointly Appointed Associate Professor, Department of Engineering Science, National Cheng Kung University
2020.08 - 2022.07
Associate Professor, Department of Engineering Science, National Cheng Kung University
2016.02 - 2020.07
Assistant Professor, Department of Engineering Science, National Cheng Kung University
2019.01 - present
Vice Chair, IEEE Information Theory Tainan Chapter
2019.07 - 2019.08
Visiting Scholar, School of Mathematics, Southwest Jiaotong University
2018.07 - 2018.08
Visiting Scholar, Department of Electrical and Computer Engineering, University of California, Davis, CA
2009.09 - 2016.01
Senior Engineer/Technical Manager, Communication System Design Division, Mediatek Inc., Hsinchu, Taiwan
2008.08 - 2009.07
Visiting Ph.D. Student, Department of Electrical and Computer Engineering, University of California, Davis, CA
Specialities
  • Sequence Design and Its Applications in Communications
  • Error-Correcting Codes
  • Digital Communications
  • NB-IoT/3GPP Mobile Telecommunications Technology/IoT-NTN
Publication
Journal
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  1. C.-Y. Pai, Z. Liu, and C.-Y. Chen*, “Sparse zero correlation zone arrays for training design in spatial modulation systems,” IEEE Trans. Commun., early access, 2025. (SCI) 
  2. A. Prakash, T.-C. Kao, S. Majhi*, P. K. Srivastava,  and C.-Y. Chen, “A construction of a two-dimensional zero correlation zone array set based on generalized Boolean functions,” Adv.  Math.  Commun.,  vol. 19, no. 6, pp. 1785-1796, Dec. 2025. (SCI)
  3. C. -Y. Pai, Y. -C. Tung, Z. -M. Huang, and C. -Y. Chen*, "Set size bound for aperiodic Z-complementary code sets," IEEE Signal Process. Lett., vol. 32, pp. 1021-1025, Feb. 2025. (SCI)
  4. A. Prakash, T. -C. Kao, S. Majhi*, P. K. Srivastava , and C.-Y. Chen, “Constructions of two-dimensional Golay-ZCZ array sets based on generalized Boolean functions,” IEEE Signal Process. Lett.,  vol. 32, pp. 321-325 , Dec. 2024.  (SCI)
  5. Z.-M. Huang, C. Hu, Z. Liu, and C.-Y. Chen*, “Cross Z-complementary sets with flexible lengths for optimal training design in spatial modulation,” IEEE Trans. Commun., vol. 73, no. 1, pp. 132-144, Jan. 2025. (SCI)
  6. Z.-M. Huang, C.-Y. Pai, Z. Liu, and C.-Y. Chen*, “Enhanced cross Z-complementary set and its application in generalized spatial modulation,” IEEE Open J. Commun. Soc., vol. 5, pp. 4674-4690, Jun. 2024. (ESCI)
  7. Y.-Q. Zhao, C.-Y. Pai, Z.-M. Huang, Z. Liu, and C.-Y. Chen*, “Two-dimensional Golay complementary array sets with arbitrary lengths for omnidirectional MIMO transmission,” IEEE Trans. Commun., vol. 72, no. 2, pp. 1135-1145, Feb. 2024. (SCI)
  8. Z.-M. Huang, C. Hu, Z. Liu, and C.-Y. Chen*, “On the mates of cross Z-complementary pairs for training sequence design in generalized spatial modulation,” IEEE Access, vol. 11, pp. 145231–145237, Dec. 2023. (SCI)
  9. C.-Y. Pai, Y.-J. Lin, and C.-Y. Chen*, “Optimal and almost-optimal Golay-ZCZ sequence sets with bounded PAPRs,” IEEE Trans. Commun., vol. 71, no. 2, pp. 728–740, Feb. 2023. (SCI)
  10. Z.-M. Huang, C.-Y. Pai, and C.-Y. Chen*, “Cross Z-complementary sets for training design in spatial modulation,” IEEE Trans. Commun., vol. 70, no. 8, pp. 5030-5045, Aug. 2022. (SCI)
  11. C.-Y. Pai and C.-Y. Chen*, “Two-dimensional Golay complementary array pairs/sets with bounded row and column sequence PAPRs,” IEEE Trans. Commun., vol. 70, no. 6, pp. 3695-3707, Jun. 2022. (SCI)
  12. Y.-T. Ni, D. N. Nguyen, F.-K. Liao, T.-C. Kao, and C.-Y. Chen*, “Iterative hard-decision decoding algorithms for binary Reed-Muller codes,” IEEE Access, vol. 10, pp. 59373-59382, Jun. 2022. (SCI)
  13. A. Șahin*, S. S. M. Hoque, and C.-Y. Chen, “Index modulation with circularly-shifted chirps for dual-function radar and communications,” IEEE Trans. Wireless Commun., vol. 21, no. 5, pp. 2938-2952, May 2022. (SCI)
  14. Y.-J. Lin, Z.-M. Huang, and C.-Y. Chen*, “Golay complementary sets and multiple-shift complementary sets with non-power-of-two length and bounded PAPRs,” IEEE Commun. Lett., vol. 25, no. 9, pp. 2805-2809, Sep. 2021. (SCI)
  15. C.-Y. Pai and C.-Y. Chen*, “A novel construction of two-dimensional Z-complementary array pairs with large zero correlation zone,” IEEE Signal Process. Lett., vol. 28, pp. 1245–1249, Jun. 2021. (SCI)
  16. C.-Y. Pai, Y.-T. Ni, and C.-Y. Chen*, “Two-dimensional binary Z-complementary array pairs,” IEEE Trans. Inf. Theory, vol. 67, no. 6, pp. 3892–3904, Jun. 2021. (SCI)
  17. S.-W. Wu, C.-Y. Chen*, and Z. Liu, “How to construct mutually orthogonal complementary sets with non-power-of-two lengths?” IEEE Trans. Inf. Theory, Theory, vol. 67, no. 6, pp. 3464–3472, Jun. 2021. (SCI)
  18. Z.-M. Huang, C.-Y. Pai, and C.-Y. Chen*, “Binary cross Z-complementary pairs with flexible lengths from Boolean functions,” IEEE Commun. Lett., vol. 25, no. 4, pp. 1057-1061, Apr. 2021. (SCI)
  19. S.-W. Wu, A. Șahin, Z.-M. Huang, and C.-Y. Chen*, “Z-complementary code sets with flexible lengths from generalized Boolean functions,” IEEE Access, vol. 9, pp. 4642-4652, Jan. 2021. (SCI)
  20. C.-Y. Pai and C.-Y. Chen*, “Construction of complementary sequence sets based on complementary pairs,” Electron. Lett., vol. 56, no. 18, pp. 966-968, Sep. 2020. (SCI)
  21. C.-Y. Chen* and I.-H. Li, “A time-of-arrival estimation algorithm for positioning in NB-IoT physical layer,” IET Commun., vol. 14, no. 11, pp. 1821-1825, Jul. 2020. (SCI)
  22. C.-Y. Pai, S.-W. Wu, and C.-Y. Chen*, “Z-complementary pairs with flexible lengths from generalized Boolean functions,” IEEE Commun. Lett., vol. 24, no. 6, pp. 1183-1187, Jun. 2020. (SCI)
  23. C.-Y. Chen* and C.-Y. Pai, “Binary Z-complementary pairs with bounded peak-to-mean envelope power ratios,” IEEE Commun. Lett., vol. 23, no. 11, pp. 1899-1903, Nov. 2019. (SCI)
  24. C.-Y. Chen, C.-A. Sung, and H.-H. Chen*, “Capacity maximization based on optimal mode selection in multi-mode and multi-pair D2D communications,” IEEE Trans. Veh. Technol., vol. 68, no. 7, pp. 6524–6534, Jul. 2019. (SCI)
  25. C.-Y. Chen* and S.-W. Wu, “Golay complementary sequence sets with large zero correlation zones,” IEEE Trans. Commun., vol. 66, no. 11, pp. 5197–5204, Nov. 2018. (SCI)
  26. S.-W. Wu and C.-Y. Chen*, “Optimal Z-complementary sequence sets with good peak-to-average power ratio property,” IEEE Signal Process. Lett., vol. 25, no. 10, pp. 1500–1504, Oct. 2018. (SCI)
  27. C.-Y. Chen, C.-A. Sung, and H.-H. Chen*, “Optimal mode selection algorithms in multiple pair device-to-device communications,” IEEE Wireless Commun., vol. 25, no. 4, pp. 82–87, Aug. 2018. (SCI)
  28. C.-Y. Chen*, “A novel construction of complementary sets with flexible lengths based on Boolean functions,” IEEE Commun. Lett., vol. 22, no. 2, pp. 260-263, Feb. 2018. (SCI)
  29. C.-Y. Chen*, “A novel construction of Z-complementary pairs based on generalized Boolean functions,” IEEE Signal Process. Lett., vol. 24, no. 7, pp. 987–990, Jul. 2017. (SCI)
  30. C.-Y. Chen*, “Complementary sets of non-power-of-two length for peak-to-average power ratio reduction in OFDM,” IEEE Trans. Inf. Theory, vol. 62, no. 12, pp. 7538–7545, Dec. 2016. (SCI)
  31. C.-C. Huang, C.-J. Wu, C.-Y. Chen, and C.-c. Chao*, “Parallel symbol-flipping decoding for non-binary LDPC codes,” IEEE Commun. Letters, vol. 17, no. 6, pp. 1228–1231, Jun. 2013. (SCI)
  32. C.-Y. Chen, Q. Huang, C.-c. Chao, and S. Lin*, “Two low-complexity reliability-based message-passing algorithms for decoding non-binary LDPC codes,” IEEE Trans. Commun., vol. 58, no. 11, pp. 3140–3147, Nov. 2010. (SCI)
  33. C.-Y. Chen, C.-H. Wang, and C.-c. Chao*, “Complete complementary codes and generalized Reed-Muller codes,” IEEE Commun. Letters, vol. 12, no. 11, pp. 849–851, Nov. 2008. (SCI)
Conference
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  1. P.-C. Hsu, F.-K. Liao, Z.-M. Huang, C.-D. Lee, C.-Y. Pai and C.-Y. Chen*, "Sparse Superposition Codes With Short Lengths Based on Zero Correlation Zone Sequence Sets," in Proc. IEEE VTS Asia-Pac. Wireless Commun. Symp. (APWCS), Tokyo, Japan, Aug. 2025, pp. 1-5. 
  2. Z.-M. Huang, H.-Y. Hsieh, C.-Y. Pai, and C.-Y. Chen*, “A novel construction of Gaussian integer periodic Z-complementary sets,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Ann Arbor, Michigan, Jun. 2025, pp. 1-6.
  3. A. Prakash, T.-C. Kao, S. Majhi, P. K. Srivastava, and C.-Y. Chen, “Function-based construction of two-dimensional binary Golay-ZCZ array pair of length non-power-of-two,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Ann Arbor, Michigan, Jun. 2025, pp. 1-6.
  4. P.-C. Hsu, T.-H. Hsu, C.-Y. Pai, Z.-M. Huang, and C.-Y. Chen*, “Low-Complexity Maximum Likelihood Decoding Algorithm for Sparse Superposition Codes,” in Proc. IEEE Conf. Technol. Sustain. (SusTech),  Santa Ana, CA, Apr. 2025, pp. 1-2.
  5.  Z.-M. Huang, C.-Y. Pai, Z. Liu, and C.-Y. Chen*, “A new construction of enhanced cross Z-complementary sets with maximum zero correlation zone,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Athens, Greece, Jul. 2024, pp. 1137-1142.
  6. H.-G. Yeh, H.-H. Chen and C.-Y. Chen, "Two-path parallel cancellation ZP-OTFS systems for mitigating residual carrier frequency offset," in Proc. IEEE 99th Veh. Technol. Conf. (VTC2024-Spring), Singapore, Singapore, Jun 2024, pp. 1-6.
  7. C.-Y. Pai, Z. Liu, C. Li, and C.-Y. Chen*, “Sparse complementary pairs with additional aperiodic ZCZ property,” in Proc. IEEE Int. Symp. Inform. Theory, Taipei, Taiwan, Jun. 2023, pp. 672-677.
  8. Y. Lee, T.-C. Kao, Z.-M. Huang, H.-P. Lin, C.-T. Wu, and C.-Y. Chen*, “Robust timing synchronization algorithm for 5G new radio,” in Proc. IEEE World Forum Internet Things (WF-IoT), Yokohama, Japan, Oct. 2022, pp. 1–5.
  9. C.-C. Huang, T.-C. Kao, C.-Y. Pai, and C.-Y. Chen*, “A novel scheme for peak-to-average power ratio reduction using polar codes,” in Proc. IEEE Int. Workshop on Signal Design and its Appl. in Commun., Colchester, United Kingdom, Aug. 2022, pp. 1-5.
  10. C.-Y. Pai, Z. Liu, Y.‐Q. Zhao, Z.‐M. Huang, and C.-Y. Chen*, “Designing two-dimensional complete complementary codes for omnidirectional transmission in massive MIMO systems,” in Proc. IEEE Int. Symp. Inform. Theory (ISIT), Espoo, Finland, Jun. 2022, pp. 1-5.
  11. Z.‐M. Huang, C.-Y. Pai, and C.-Y. Chen*, “A novel construction of optimal cross Z-complementary sets based on generalized Boolean functions,” in Proc. IEEE Int. Symp. Inform. Theory (ISIT), Espoo, Finland, Jun. 2022, pp. 1-5.
  12. S. S. M. Hoque, C.-Y. Chen, and A. Șahin*, “Wideband index modulation with circularly-shifted chirps,” in Proc. IEEE Consumer Commun. & Netw. Conf., Virtual, Jan. 2021, pp. 1-6. (Best Paper Award)
  13. Y.-T. Ni, C.-Y. Pai, and C.-Y. Chen*, “An iterative bit-flipping decoding algorithm for binary Reed-Muller codes,” in Proc. Int. Symp. Inform. Theory and its Appl., Virtual, Oct. 2020, pp. 1-5.
  14. C.-Y. Pai and C.-Y. Chen*, “Constructions of two-dimensional Golay complementary array pairs based on generalized Boolean functions,” in Proc. IEEE Int. Symp. Inform. Theory, Virtual, Jun. 2020, pp. 2931-2935.
  15. Z.‐M. Huang, C.-Y. Pai, and C.-Y. Chen*, “A novel construction of optimal cross Z-complementary sets based on generalized Boolean functions,” in Proc. IEEE Int. Symp. Inform. Theory, Espoo, Finland, Jun. 2022, pp. 1-5.
  16. S.-W. Wu and C.-Y. Chen*, “A new construction of zero correlation zone complementary sequence sets with bounded peak-to-average power ratio,” in Proc. IEEE Global Commun. Conf., Waikoloa, HI, Dec. 2019, pp. 1-6.
  17. C.-Y. Pai, Y.-T. Ni, Y.-C. Liu, M.-S. Kuo, and C.-Y. Chen*, “Constructions of two-dimensional binary Z-complementary array pairs,” in Proc. IEEE Int. Symp. Inform. Theory, Paris, France, Jul. 2019, pp. 2264-2268.
  18. S.-W. Wu and C.-Y. Chen*, “A construction of Z-complementary sets based on generalized Boolean functions,” in Proc. IEEE Asia Pacific Wireless Commun. Symp., Hsinchu, Taiwan, Aug. 2018, pp. 1-2.
  19. C.-Y. Chen*, “A new construction of Golay complementary sets of non-power-of-two length based on Boolean functions,” in Proc. IEEE Wireless Commun. Netw. Conf., San Francisco, CA, Mar. 2017, pp. 1–5.
  20. Y.-S. Tang, C.-Y. Chen, and C.-c. Chao*, “A novel construction of zero correlation zone sequences based on Boolean functions,” in Proc. IEEE 11th Int. Symp. Spread Spectrum Techn. and Appl., Taichung, Taiwan, Oct. 2010, pp. 198–203.
  21. C.-Y. Chen, Q. Huang, C.-c. Chao, and S. Lin*, “A message-passing decoding algorithm for q-ary LDPC codes with low-complexity,” in Proc. Int. Symp. Inform. Theory and its Appl., Taichung, Taiwan, Oct. 2010, pp. 501–506.
  22. C.-Y. Chen, Q. Huang, J. Kang, L. Zhang, and S. Lin*, “A binary message-passing decoding algorithm for LDPC codes,” in Proc. 47th Annual Allerton Conference on Communication, Control, and Computing, Monticello, IL, Sep. 2009, pp. 424-430.
  23. C.-Y. Chen, Y.-J. Min, K.-Y. Lu, and C.-c. Chao*, “Cell search for cell-based OFDM systems using quasi complete complementary codes,” in Proc. IEEE Int. Conf. Commun., Beijing, China, May 2008, pp. 4840–4844.
  24. C.-Y. Chen, C.-H. Wang, and C.-c. Chao*, “Complementary sets and Reed-Muller codes for peak-to-average power ratio reduction in OFDM,” in Proc. 16th Int. Symp. AAECC, vol. 3857, Las Vegas, NV, Feb. 2006, pp. 317-327.
  25. C.-Y. Chen, C.-H. Wang, and C.-c. Chao*, “Convolutional codes for peak-to-average power ratio reduction in OFDM,” in Proc. IEEE Int. Symp. Inform. Theory, Yokohama, Japan, Jun. 2003, p. 5.
Patent
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  1. C.-Y. Chen, “Communication device and communication method,” US Patent NO. US 10,862,608 B2, Dec. 2020
  2. C.-Y. Chen, Chao-Ming Chang, Kuang-Jen Wang, and Mao-Ching Chiu, “Method of performing cell search for a wireless communications system,” US Patent NO. US8107443 B2, Jan. 2012.
Others
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  1. C.-Y. Chen, “The primary synchronization sequences in LTE,” Encyclopedia of Wireless Networks, Springer, Cham, Jul. 2018, p. 1–4. (ISBN: 978-3-319-32903-1, DOI: https://doi.org/10.1007/978-3-319-32903-1_79-1)
Projects
  1. NSTC, Training Design for Spatial Modulation Systems Based on Two-Dimensional Arrays(PI), 2024.08 ~ 2026.07
  2. NSTC, Sparse Superposition Codes Based on Sequences (PI), 2023.8~2026.7
  3. NSTC, Training Sequence Design for Generalized Spatial Modulation Systems (PI), 2023.3~2025.2
  4. NCSIST, Research on Controlled Pattern Interference Mitigation Array Techniques for Satellite Navigation (Co-PI), 2023.2~2023.12
  5. WNC, Development of 5G NR Baseband and TSN Algorithms (PI), 2021/8/1 - 2022/7/31
  6. MOST, University Participation in 3GPP Standard Meetings (Co-PI), 2021/6/1 - 2025/5/31
  7. III, Baseband Algorithm Design for Next-Generation NB-IoT (PI), 2021/3/16 - 2021/11/30
  8. MOST, Constructions of Two-Dimensional Sequences and Their Applications to Communications (PI), 2020/8/1 - 2023/7/31
  9. MOST, Synchronization Sequence Design for Next-Generation Wireless Communication Systems (PI), 2018/8/1 - 2020/7/31
  10. ITRI, Development and Evaluation of Positioning Algorithms in NB-IoT Systems (PI), 2018/1/1 - 2018/12/31
  11. MOST, Constructions of Z-Complementary Sequence Sets and Their Applications to Next-Generation Wireless Communication Systems (PI), 2017/8/1 - 2018/7/31
  12. MOST, Constructions of Golay Complementary Sequences and Zero Correlation Zone Sequences and Their Applications to Communication Systems(PI), 2016.08 ~ 2017.07
  13. AMEC, Development of Synchronization and Despreading Algorithms for VHF Data Exchange System in Maritime Communications, 2025/09/01 ~ 2026/02/28
Classes
2025 Fall
2025 Spring
2024 Fall
2024 Spring
2023 Fall
2023 Spring
2022 Fall
2022 Spring
2021 Fall
2021 Spring
2020 Fall
2020 Spring
2019 Fall
2019 Spring
2018 Fall
2018 Spring
2017 Fall
2017 Spring
2016 Fall
2016 Spring
Students
Current Academic Year Lab Members
Ph.D.
Zhen-Ming Huang
Tzu-Chieh Kao
Po-Chih Hsu
Master
Bing-Chen Wu
Chun-Hsi Sung
Shang-Zhe Lu
Yi-Chen Wu 
Lin-Jyun Huang
Wei-Zuo Lin
Yo-Chen Ling
Chun-Chen Hu
 Zih-Ying Lee
Pin-Wei Chen 
Po-Sheng Chang
Cheng-Han Gan
Ping-Yuan Hung
Yu-Chun Fan
Graduates of all Previous Years
Master
2018
Shing-Wei Wu   Jian-Bin Jhang
2019
Meng-Hsien Kuo   Hung-Ying Chang   I-Hsien Li
2020
Yung-Ting Ni   Yen-Cheng Liou
2021
Zhen-Ming Huang   Yu Lee   Chin-Chieh Huang   Duc-Nhat Nguyen
2022
Chun-Ta Wu   Feng-Kai Liao   You-Qi Zhao   Hsuan-Po Lin
2023
Hu Chen   Chen-Zhuan Hong   Yen-Ting Chen   Jian-Hua Huang
2024
Hsiang-Yu Hsieh   Cheng-Yu Wei   Jing-Yao Lo   Yu-Chun Kuo   Yu-Che Tung   Tzu-Hsiu Hsu
2025
Yi-Ting Hung   Fang-Yu Wu   Pin-Hsien Yang    Yi-Xuan Zhong (Co-Advising)   Yu-Hsiang Wang
Ph.D.
2023
Cheng-Yu Pai
Honors
  1. 2025, World's Top 2% Scientists, Elsevier
  2. 2024, World's Top 2% Scientists, Elsevier
  3. 2023, World's Top 2% Scientists, Elsevier
  4. 2023, Outstanding Poster Exhibition Award, Communications Engineering Program, National Science and Technology Council
  5. 2023, 2022 Exemplary Reviewers, IEEE Transactions on Communications
  6. 2023, Best Paper Award, National Symposium on Telecommunications
  7. 2022, World's Top 2% Scientists, Elsevier
  8. 2022, 20th Y. Z. Hsu Science Paper Award, Far Eastern Y. Z. Hsu Science and Technology Memorial Foundation, Taiwan
  9. 2022, Outstanding Poster Exhibition Award, Communications Engineering Program, Ministry of Science and Technology
  10. 2021, 2020 Exemplary Reviewers, IEEE Communications Letters
  11. 2021, World's Top 2% Scientists, Elsevier
  12. 2021, Research Project Award, Communications Engineering Program, Ministry of Science and Technology
  13. 2018, Best Paper Award for Young Scholars, IEEE Information Theory Society Taipei/Tainan Chapter and the IEEE Communications Society Taipei/Tainan Chapter
  14. 2017, 15th Y. Z. Hsu Science Paper Award, Far Eastern Y. Z. Hsu Science and Technology Memorial Foundation, Taiwan
  15. 2017, Best GOLD Member Award, IEEE Tainan Section
  16. 2017, Innovative Research and Development Results by Young Scholars, Taiwan Comprehensive University System Regulation
NCKU EE