Lei Yu (于磊)


Research Fellow (working with Prof. Vincent Y. F. Tan)
Department of Electrical and Computer Engineering,
National University of Singapore (NUS)

Email: leiyu AT nus DOT edu DOT sg 
            or leiyu.scholar AT gmail DOT com

Google scholar 
ResearchGate

Research Experience

  • June 2017- Present, Research Fellow (with Prof. Vincent Y. F. Tan)
    Department of Electrical and Computer Engineering
    National University of Singapore, Singapore
  • March 2016 - April 2017, Visiting Scholar (with Prof. Chang Wen Chen)
    State University of New York at Buffalo, Buffalo, NY, USA
  • July 2015 - May 2017, Postdoctoral Researcher (with Prof. Houqiang Li)
    Department of Electronic Engineering and Information Science
    University of Science and Technology of China, Hefei, Anhui, China
  • September 2014 - December 2014, Visiting Student (supervised by Prof. Zixiang Xiong)
    Texas A&M University, College Station, TX, USA

Education

  • Ph.D. in Electrical Engineering, Sep. 2010-Jun. 2015
    • University of Science and Technology of China
    • Advisors: Prof. Weiping Li and Prof. Houqiang Li
    • Dissertation: “Hybrid Digital-Analog Joint Source-Channel Coding”
  • B.E. in Electrical Engineering, Sep. 2006-Jul. 2010 (first two years in Dept. of Physics)
    • University of Science and Technology of China

Research Interests

  • Information theory; probability theory; discrete mathematics; security. Specifically, my research interests include
    • Simulation of random variables 
    • Probabilistic coupling and transportation theory
    • Maximal correlation
    • Packing and covering
    • Measures of information
    • Information-theoretic security
    • Network information theory 

Publications

  • Journal Papers and Preprints 

    1. Lei Yu and Vincent Y. F. Tan, “Simulation of random variables under Rényi divergence measures of all orders,” submitted to IEEE Trans. Inf. Theory, Jun. 2018. [arxiv]
    2. Lei Yu, “On conditional correlations,” submitted to Statistics and Probability Letters, May 2018. 
    3. Lei Yu and Vincent Y. F. Tan, “Asymptotic coupling and its applications in information theory,” submitted to IEEE Trans. Inf. Theory, Dec. 2017. [arxiv]
    4. Lei Yu and Vincent Y. F. Tan, "Rényi resolvability and its applications to the wiretap channel," submitted to IEEE Trans. Inf. Theory, Jul. 2017; Revised Mar. 2018. [arxiv]
    5. M. Baig, Lei Yu, Z. Xiong, A. Host-Madsen, H. Li, and W. Li, "On the energy-delay tradeoff in streaming data," submitted to IEEE Trans. Inf. Theory, Apr. 2017. 
    6. Lei Yu, Houqiang Li, and Chang Wen Chen, "Generalized common informations: Measuring commonness by the conditional maximal correction," preprint, Oct. 2016. [arxiv] [pdf] 
    7. Lei Yu, Houqiang Li, and Weiping Li, "Distortion bounds for source broadcast problems," IEEE Trans. Inf. Theory, vol. 64, no. 8, Aug 2018. [arxiv] [pdf]
    8. Lin Zhou, Vincent Y. F. Tan, Lei Yu and Mehul Motani, "Exponential strong converse for content identification with lossy recovery," IEEE Trans. Inf. Theory, vol. 64, no. 8, Aug 2018. [arxiv]
    9. Jian Shen, Lei Yu, Li Li, and Houqiang Li, "Foveation based wireless soft image delivery," IEEE Trans. Multimedia, vol. 20, no. 5, May 2018. 
    10. Lei Yu and Vincent Y. F. Tan, "Wyner’s common information under Rényi divergence measures," IEEE Trans. Inf. Theory, vol. 64, no. 5, pp. 3616-3632, May 2018. [link] [arxiv]
    11. Lei Yu, Houqiang Li, and Weiping Li, "Joint source-channel secrecy using uncoded schemes: Towards secure source broadcast," IEEE Trans. Inf. Theory, vol. 63, no. 11, pp. 7442-7463, Nov. 2017. [link] [arxiv]
    12. Lei Yu, Houqiang Li, and Weiping Li, "Source-channel secrecy for Shannon cipher system," IEEE Trans. Inf. Theory, vol. 63, no. 4, pp. 2596-2622, Apr. 2017. [link] [arxiv] [slides]
    13. Lei Yu, Houqiang Li, and Weiping Li, "Comments on 'Approximate characterizations for the Gaussian source broadcast distortion region'," IEEE Trans. Inf. Theory, vol. 62, no. 10, pp. 5966-5969, Oct. 2016. [link] [arxiv] [pdf]
    14. Lei Yu, Houqiang Li, and Weiping Li, "Wireless cooperative video coding using a hybrid digital-analog scheme," IEEE Trans. Circuits Syst. Video Technol., vol. 25, no. 3, pp. 436-450, Mar. 2015. [link] [pdf]
    15. Lei Yu, Houqiang Li, and Weiping Li, "Wireless scalable video coding using a hybrid digital-analog scheme," IEEE Trans. Circuits Syst. Video Technol., vol. 24, no. 2, pp. 331-345, Feb. 2014. [link] [pdf] [matlab-code]
  • Conference Papers

    1. Lei Yu, “Maximal guessing coupling and its applications,” ISIT 2018[arxiv]
    2. Lei Yu and Vincent Y. F. Tan, "Wyner’s common information under Rényi divergence measures," ISIT 2018. [link] [arxiv]
    3. Lei Yu and Vincent Y. F. Tan, "Rényi resolvability and its applications to the wiretap channel," Proceedings of the 10th International Conference on Information Theoretic Security (ICITS), 2017, Hong Kong, (Information Theoretic Security, Lecture Notes in Computer Science, pp 208-233, 2017). [link]
    4. Lei Yu, Houqiang Li, and Chang Wen Chen, "Distortion bounds for transmitting correlated sources with common part over MAC," 54th Allerton Conference, Monticello, IL, USA, Sep. 2016. [arxiv]
    5. Lei Yu, Houqiang Li, and Weiping Li, "Source-channel secrecy for Shannon cipher system," 54th Allerton Conference, Monticello, IL, USA, Sep. 2016. [arxiv]
    6. Lei Yu, Houqiang Li, and Weiping Li, "Distortion bounds for source broadcast over degraded channel," IEEE Int. Symp. Inf. Theory (ISIT), Barcelona, Spain, Jul. 2016. [pdf]
    7. Jian Shen, Lei Yu, and Houqiang Li, "Hybrid digital-analog scheme for video transmission over fading channel," IEEE Int. Symp. Circuits Syst. (ISCAS), Montreal, Canada, May 2016.
    8. Lei Yu, H. Li, W. Li, Z. Xiong, and A. Host-Madsen, "On the energy-delay tradeoff in lossy network communications," IEEE Inf. Theory Workshop (ITW), Jeju Island, Korea, Oct. 2015. [matlab-code]
    9. Lei Yu, Houqiang Li, and Weiping Li, "Hybrid digital-analog scheme for video transmission over wireless," IEEE Int. Symp. Circuits Syst. (ISCAS), pp. 1163-1166, Beijing, P. R. China, May 2013.
  • Work Report: 
    1. Lei Yu, Some Problems in Information-Theoretic Security, May 2017. [pdf]

Honors and Awards

  • CAS President Award, Chinese Academy of Sciences, 2015
  • China National Scholarship, 2014
  • International Exchange Program for Outstanding Students, Univ. of Sci. & Tech. of China, 2014
  • USTC Scholarship, Univ. of Sci. & Tech. of China, 2006-2010
  • National High School Math League, Second Prize, China, 2005

Professional Activities

  • Reviewer, IEEE Transactions on Information Theory; IEEE Transactions on Communications; Entropy

Talks and Presentations

  • “Rényi resolvability and its applications to the wiretap channel,”  Proceedings  of  the  10th  International Conference on Information Theoretic Security (ICITS), 2017, Hong Kong. 
  • “Joint source-channel coding,” McMaster University, Hamilton, ON, Canada, Dec. 1, 2016 
  • “Distortion bounds for transmitting correlated sources with common part over MAC,” 54th Allerton Conference, Monticello, IL, USA, Sep. 2016.   
  • “Source-channel secrecy for Shannon cipher system,” 54th Allerton Conference, Monticello, IL, USA, Sep. 2016.
  • “Distortion bounds for source broadcast over degraded channel,” IEEE Int. Symp. Inf. Theory (ISIT), Barcelona, Spain, Jul. 2016.
  • “On the energy-delay tradeoff in lossy network communications,” IEEE Inf. Theory Workshop (ITW), Jeju, Korea, Oct. 2015.
  •  “Hybrid digital-analog scheme for video transmission over wireless,” IEEE Int. Symp. Circuits Syst. (ISCAS), pp. 1163-1166, Beijing, P. R. China, May 2013.