Rui Zhang (张睿)

alt text 

PhD student,
School of ECE,
Georgia Institute of Technology
Office: Centergy One, 75 5th Street NW, Atlanta, Georgia 30308
E-mail: ruizhangece [@] gatech [DOT] edu
Google Scholar

About me

Starting from Fall 2017, I am a Ph.D. student at School of ECE, Georgia Tech. I'm very fortunate to be advised by Prof. Gee-Kung Chang.

Prior to Georgia Tech, I received B.S. in Electrical engineering and B.A. in Economics from Peking University in 2017, where I was fortunate to work with Prof. Zhiping(James) Zhou. In summer 2016, I worked with Prof. S.J.Ben Yoo at UC Davis.

In 2018 and 2019, I spent wonderful summers as a research intern with Dr. Winston Way at Neophotonics.

In summer 2020, I am happy to work on the next-generation flexible Passive Optical Network with Noriaki Kaneda, Yannick Lefevre, Amitkumar Mahadevan, Dora Van Vee, and Vincent Houtsma in Nokia Bell Labs.


My research interests are broadly in coherent optical communication systems, high-performance digital signal processing techniques for 5G and beyond, free space optical transmission, millimeter wave transmission, and passive optical networks. Currently, I'm particularly interested in the following topics:

  • Laser Phase noise characterization and DSP techniques in coherent systems.

  • Probabilistic shaping based system optimization.

  • High-performance millimeter wave and free space optics communication.

Selected Journal Papers

  1. R. Zhang, W.J. Jiang, K. Kuzmin, Y. Weng, W. Mou, G.K. Chang, W. Way, " The Impact of Local Oscillator Frequency Jitter and Laser Linewidth to Ultra High Baud Rate Coherent Systems ", in Journal of Lightwave Technology, vol. 38, no. 6, pp. 1138-1147, 2020.

  2. R. Zhang, Y.W. Chen, W. Mou, G.K. Chang, " Rate Redundancy and Entropy Allocation for PAS-OFDM based Mobile Fronthaul ", in Journal of Lightwave Technology, vol. 38, no. 16, pp. 4260-4269.

  3. R. Zhang, K. Kuzmin, W.J. Jiang, G. Giaretta, T. Tomimoto, Y. Weng, G.K. Chang, and W. Way, " Impact of laser flicker noise and linewidth on 64 to 96  Gbaud/DP-nQAM metro coherent optical links ", Optics Letters. 45, 1220-1223 (2020).

  4. R. Zhang, F. Lu, M. Xu, S. Liu, P.C. Peng, S. Shen, H. Cho, J. He, Q. Zhou, S. Yao, G.K. Chang, " An Ultra-reliable MMW/FSO A-RoF System based on Coordinated Mapping and Combining for 5G and Beyond Mobile Fronthaul ", in Journal of Lightwave Technology 36 (20), 4952-4959, 2018.

  5. R. Zhang, P.C. Peng, X. Li, S. Liu, Q. Zhou, J. He, Y.W. Chen, S. Shen, S. Yao, G.K. Chang, " 4×100-Gb/s PAM-4 FSO Transmission Based on Polarization Modulation and Direct Detection ", IEEE Photonics Technology Letters, vol. 31, no. 10, pp. 755-758, 15 May, 2019.

  6. R. Zhang, Y.W. Chen, W. Mou, S.Yao, G.K. Chang, " Entropy Allocation Optimization for PS-OFDM with Constellation Partitioning based Modeling ", Accepted by Journal of Lightwave Technology.

Selected Conference Papers

  1. R. Zhang, W.J. Jiang, K. Kuzmin, R. Juluri, G.K. Chang, W. Way, " Laser Frequency Jitter Tolerance and Linewidth Requirement for ≥ 64Gbaud DP-16QAM coherent systems ", OFC 2019 M4I.2.

  2. R. Zhang, Y.W. Chen, S. Shen, Q. Zhou, S. Yao, S.J. Su, Y. Alfadhli, G.K. Chang, " Joint Optimization of Processing Complexity and Rate Allocation through Entropy Tunability for 64-/256-QAM Based Radio Fronthauling with LDPC and PAS-OFDM ", OFC 2020 M2F.2.

  3. R. Zhang, N. Kaneda, Y. Lefevre, A. Mahadevan, D. Veen, and V. Houtsma, " Probabilistic and Geometric Shaping for Next-Generation 100G Flexible PON," accepted by European Conference on Optical Communication (ECOC 2020).

Honors and Awards

  • Fall 2017 Oscar P. Cleaver Award (Georgia Tech).

  • 2018-2019 Corning Stem Scholarship.

  • 2019-2020 Corning Stem Scholarship.

  • Beijing Outstanding Graduates Award (2017).

  • Top 10 undergraduate thesis award (2017, School of EECS, Peking University)