LI Xiang
Li Xiang
Professor, doctoral supervisor, winner of Hubei Talent Program, and winner of CUG Hundred Talents Program
Office: Room 231, No. 2 Teaching Building Email: lix@cug.edu.cn
Main Research Fields
1. Digital signal processing in communication systems
2. Sensing system and real-time prototype implementation
3. Machine learning in communication systems
Education and Work History
2019.11 – 2021.11: Senior Research Associate, Department of Electronic Engineering, University of Cambridge
2015.5 – 2019.10: Senior Engineer, State Key Laboratory of Optical Communication Technologies and Networks, Wuhan Research Institute of Posts and Telecommunications Co., Ltd.
2011.8 – 2016.5: PhD, Information Communication Research Center, Nanyang Technological University
2009.9 – 2011.6: Master, School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology
2005.9 - 2009.6: Bachelor, School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology
Admission
1. Communication Digital Signal Processing Algorithm and FPGA Implementation (C/Matlab/Python/Verilog HDL)
2. Sensing System Algorithm and FPGA Implementation (C/C++/Verilog HDL)
3. Machine Learning Nonlinear Digital Signal Processing Algorithm (Matlab/Python)
4. Welcome students with backgrounds in electronics, optics, computer science, and other related fields to join us.
5. Graduate students can be recommend for internship in companies.
6. Welcome undergraduate students who are passionate about programming and hardware design to participate in scientific exploration and practice.
Scientific Research/Programs
1. Project supported by the Key R&D Program of the Ministry of Science and Technology, 2022YFB2903201, Low cost, high-speed, medium to short distance data center interconnection optical communication system, 2022/10-2025/10, RMB 1.90 million Yuan, under study, subproject leader
2. Project supported by Hubei Major Science and Technology Innovation Program, 2016AAA012, “Research on ultra-low cost 100G metro network optical transmission system”, 2016/07-2018/06, RMB 1 million Yuan, concluded, project leader
3. General program of Natural Science Foundation of Hubei Province, 2016CFB302, “Research on low-cost optical interconnection technology based on nonlinear compensation”, 2016/01-2018/01, RMB 30,000Yuan, concluded, project leader
4. Youth Science Fund of the Natural Science Foundation of China, 61705171, “Research on the direct adjusting and direct inspecting optical fiber communication system based on nonlinear digital signal processing”, 2018/01-2020/12, RMB 210,000Yuan, concluded, project leader
5. Applied Basic Research Program of Wuhan City, 2017010201010100, “Research on the fusion technology of optical fiber transmission and quantum encryption”, 2017/10-2019/10, RMB 150,000Yuan, concluded, project leader
Awards
1. 2017: Youth Post Expert of FiberHome Telecommunication Technologies
2. 2015: Scholarship for Self-financed Chinese Students (500 students worldwide)
3. 2011-2015: Graduate Scholarship of Nanyang Technological University
4. 2011-2012: Outstanding Master's Thesis of Hubei Province
Invited Presentations
1. X. Li, “Advanced nonlinear digital signal processing for short-reach applications,” Optical Fiber Communication Conference and Exposition (OFC) 2021, USA, June, 2021.
2. X. Li, “High capacity coherent UDWDM-PON in optical access networks,” International Conference on Optical Communications and Networks (ICOCN), Zhuhai, China, 2018.
3. X. Li, “High capacity coherent UDWDM-PON in optical access networks,” The Second Global Optical Information and Network Conference (GOINC), Beijing, China, 2018.
4. X. Li, “High capacity coherent UDWDM-PON in optical access networks,” OFCIO 2018, Jilin, China, 2018.
5. X. Li, “Independent component analysis based channel equalization in coherent optical fiber transmission systems,” Proc. of SPIE-OSA-IEEE, Asia Communications and Photonics (ACP), Guangzhou, China, 2017.
6. X. Li, “Nonlinearity compensation for optical direct detection systems in metro and access networks,” 7th International Multidisciplinary Conference on Optofluidics 2017 (IMCO), Singapore, 2017.
Publications
Journal publications as first author or corresponding author:
1. Y. Shi†, X. Li†, M. Zou, Y. Yu, and X. Zhang, "103 GHz germanium-on-silicon photodiode enabled by an optimized U-shaped electrode," Photon. Res. 12, 1-6, 2024. (CAS Q1)
2. Z. Gong, F. Fan, X. Hu, M Luo, X Zhang, T Huang, and X. Li*, "Coherent optical transmitter IQ imbalance mitigation with embedded carrier phase and frequency offset estimation," Optics Express, 32(4), 5500-5514, 2024. (CAS Q2)
3. D. Li†, X. Li†, T. Huang, J. Zhang, Z. Wu, L. Xiong, C. Peng, Y. Chen, Q.Qin, P. Shum, "Interference fading suppression with a multi-subcarrier pulse in a distributed acoustic sensor," Optics Express, 32(11), 20230-20241, 2024. (CAS Q2)
4. X. Zhang, Y. Xuan, Z. Gong, X. Zhang, J. Li, M. Luo, B. Jia, D. Luo, T. Huang, and X. Li*, "Experimental demonstration of flexible information rate PON beyond 100 Gb/s with rate-compatible LDPC codes," Optics Express 32, 15444-15459, 2024. (CAS Q2)
5. X. Li, M. S. Faruk and S. J. Savory, "Bidirectional Symmetrical 100 Gb/s/λ Coherent PON Using a Simplified ONU Transceiver," in IEEE Photonics Technology Letters, vol. 34, no. 16, pp. 838-841, 2022. (CAS Q3)
6. Y. Wang†, X. Li†, Z. Jiang, L. Tong, W. Deng, X. Gao, X. Huang, H. Zhou, Y. Yu, L. Ye*, X. Xiao*, and X. Zhang*, “Ultrahigh-speed graphene-based optical coherent receiver,” Nature Communications, vol. 12, no. 1, pp. 1-7, 2021. (CAS Q1)
7. X. Li, Y. Liu, S. Fu, Y. Wang and Y. Qin, “Trellis shaping for fiber nonlinearity mitigation in coherent optical OFDM systems,” Journal of Lightwave Technology, vol. 39, no. 9, pp. 2809-2819, 2021. (CAS Q1)
8. Y. Wang, Z. Jiang, W. Deng, D. Zhou, Q. Yan, L. Chen, Y. Yu, J. Zhang, L. Ye*, X. Li*, X. Zhang*, “Ultra-compact high-speed polarization division multiplexing optical receiving chip enabled by Graphene-on-plasmonic slot waveguide photodetectors,” Advanced Optical Materials, vol. 9, no. 6, pp. 2001215, 2021. (CAS Q2)
9. X. Li*, M. Luo, C. Li, C. Yang, H. Li, and S. Yu, “Direct detection of pilot-assisted PAM-4 signals with large phase noise tolerance,” Optics Letters, vol. 44, no. 22, pp. 5457-5460, 2019. (CAS Q2)
10. S. You, Y. Wang, W. Liu, Y. Shen, J. Pang, X. Li*, M. Luo, “400-Gb/s Single-sideband direct detection over 7-Core fiber with SSBI cancellation,” IEEE Photonics Technology Letters, vol. 31, no. 9, pp. 669-672, 2019. (CAS Q3)
11. C. Yang, M. Luo, C. Li, W. Li, and X. Li*, “Transmission of 64-Gb/s pilot-assisted PAM-4 signal over 1440-km SSMF with phase noise mitigation,” IEEE Photonics Journal, vol. 11, no. 1, pp.1-9, 2019. (CAS Q3)
12. M. Luo, J. Li, T. Zeng, L. Meng, L. Xue, L. Yi, and X. Li*, “Real-time coherent UDWDM-PON with dual-polarization transceivers in a field trial,” IEEE/OSA Journal of Optical Communications and Networking, vol. 11, no. 2, pp. A166-A173, 2019. (CAS Q1)
13. W. Zou, T. Huang, J. Yuan, D. Wang, X. Li*, and Z. Cheng*, “Modified constellation reshaping method for PAPR reduction of PDM CO-OFDM based on a SLM algorithm,” Applied Optics, vol. 58, no. 7, pp. 1800-1807, 2019. (CAS Q3)
14. Y. Qiu, M. Luo, Z. He, X. Li*, “Balanced detection of 100-Gb/s optical OFDM signals with SSBI cancellation based on fused-type fiber mode-selective coupler,” IEEE Photonics Journal, vol. 10, no. 5, pp.1-10, 2018. (CAS Q3)
15. J. Li, T. Zeng, L. Meng, M. Luo, Z. He, Z. Zhang, L. Yi, X. Li*, S. Yu, “Real-time bidirectional coherent ultra-dense TWDM-PON for 1000 ONUs,” Optics Express, vol. 26, no. 18, pp. 22976-22984, 2018. (CAS Q2)
16. H. Li, M. Luo, X. Li*, and S. Yu, “Spectrally efficient digital mobile fronthaul with discrete cosine transform and multi-band quantization,” Optics Letters, vol. 43, no. 20, pp. 5130-5133, 2018. (CAS Q2)
17. C. Li, M. Luo, and X. Li*, “4×128 Gb/s PDM-DMT signal transmission over 1440-km SSMF by DMLs based coherent transceiver,” Optics Express, vol. 26, no. 23, pp.30901-30910, 2018. (CAS Q2)
18. H. Li, X. Li*, and M. Luo, “Improving performance of differential pulse coding modulation based digital mobile fronthaul employing noise shaping,” Optics Express, vol. 26, no. 9, pp. 11407-11417, 2018. (CAS Q2)
19. X. Li, M. Luo, Y. Qiu, and Q. Yang. “Independent component analysis based digital signal processing in coherent optical fiber communication systems (invited paper)” Optics Communications, vol. 409, pp.13–22, 2018. (CAS Q3)
20. M. Li, X. Li*, C. Yang, Q. Yang, and S. Yu, "Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation", Chinese Optics Letters, vol. 15, no. 5, pp. 050604, 2017. (CAS Q2)
21. G. Gao, M. Luo, X. Li*, Y. Zhang, Q. Huang, Y. Wang, X. Xiao, Q. Yang and J. Xia*, “Transmission of 2.86 Tb/s data stream in silicon subwavelength grating waveguides,” Optics Express, vol. 25, no. 3, pp. 2918-2927, 2017. (CAS Q2)
22. X. Li, A. Alphones, W.D. Zhong, C. Yu and Z. Xu, “Improving performance of channel equalization in RSOA-based WDM-PON by QR decomposition,” Optics Express, vol. 23, no. 21, pp. 27299-27305, 2015. (CAS Q2)
23. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Channel Equalization Using Independent Component Analysis in PDM-CO-OFDM,” IEEE Photonics Technology Letters, vol. 26, no. 5, pp. 497-500, 2014. (CAS Q3)
24. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Time-Domain Adaptive Decision-Directed Channel Equalizer for RGI-DP-CO-OFDM,” IEEE Photonics Technology Letters, vol. 26, no. 3, pp. 285-288, 2014. (CAS Q3)
25. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Fiber Nonlinearity Tolerance of APSK Modulated DFT-S OFDM Systems,” IEEE Photonics Technology Letters, vol. 25, no. 23, pp. 2304-2307, 2013. (CAS Q3)
26. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Pilot-Aided Channel Equalization in RGI-PDM-CO-OFDM Systems,” IEEE Photonics Technology Letters, vol. 25, no. 19, pp. 1924-1927, 2013. (CAS Q3)
27. X. Li, A. Alphones, W.D. Zhong and C. Yu, “Investigation of PMD in direct-detection optical OFDM with zero padding,” Optics Express, vol. 21, no. 18, pp. 20851-20856, 2013. (CAS Q2)
28. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Channel Equalization in Optical OFDM Systems Using Independent Component Analysis,” Journal of Lightwave Technology, vol. 32, no. 18, pp. 3206-3214, 2014. (CAS Q1)
29. X. Li, J. Dong, Y. Yu and X. Zhang, “A Tunable Microwave Photonic Filter Based on an All-Optical Differentiator,” IEEE Photonics Technology Letters, vol. 23, no. 5, pp. 308-310, 2011. (CAS Q3)
30. X. Li, E. Xu, L. Zhou, Y. Yu, J. Dong and X. Zhang, “Microwave photonic filter with multiple taps based on single semiconductor optical amplifier,” Optics Communications, vol. 283, no. 5, pp. 3026-3029, 2010. (CAS Q3)
Patents
1. Li Xiang, “A few-mode optical fiber transmission system and its digital signal recovery method”, 201510897002.X
2. Li Xiang, “Polarization-independent direct detection system and method based on light intensity modulation signal”, 201510897504.2
3. Li Xiang, Yang Qi, Luo Ming, Hu Rong, Li Si, “Adaptive optical fiber communication nonlinear equalization method and system based on direct detection”, 201610008077.2
4. Li Xiang, “An ADO-OFDM channel equalization method, device and ADO-OFDM system”, 201711376059.0
5. Li Xiang, Luo Ming, “Real number nonlinear equalization method and device applied to coherent optical fiber communication system”, 201811408696.6
6. Wang Yuanxiang, Li Xiang, “Polarization-independent self-coherent orthogonal frequency division multiplexing optical fiber transmission system and transmission method”, 201510903299.6
7. Zhang Xu, Li Xiang, Wang Yuanxiang, Yang Qi, Yu Shaohua, “Channel recovery method for coherent optical orthogonal frequency division multiplexing system with implicit training sequences”, 201510933232.7
8. He Zhixue, Li Xiang, Yang Qi, “Self-correlated zero-difference detection device and method based on mode multiplexed optical communication system”, 201510963411.5
9. Liu Ziqing, Li Xiang, Hu Rong, Yang Qi, Yu Shaohua, “OFDM signal unicast and multicast optical network structure based on constant envelope”, 201510989670.5
10. Li Jie, Zeng Tao, Li Xiang, Yang Qi, “A parallel CMA simplified implementation method for coherent optical communication systems”, 201510996036.4
11. Yang Qi, You Shanhong, Li Xiang, Luo Ming, Yu Shaohua, “Multi-core fiber-based DD OFDM system and method for eliminating SSBI”, 201710284088.8
12. Huang Tianye, Ren Kaixuan, Li Xiang, “A timing synchronization method, apparatus and storage device in the coherent optical OFDM communication system”, 201711174166.5
13. Luo Ming, Li Xiang, Yang Qi, “Optical fiber communication system and method for converting multiple NRZ optical signals to single multi-level optical signals”, 201711385821.1
14. Li Si, Li Xiang, Yang Qi, “A transmission system for dual polarization optical signals”, 201711409244.5
15. Luo Ming, Li Xiang, “UDWDM-PON downlink network transmission system”, 201810184667.X
16. Li Si, Li Xiang, Luo Ming, “Optical signal receiving device, method and coherent optical transmission system with the device”, 201810515132.6
17. Dai Xiaoxiao, Li Xiang, “A noise compensation method and system for optical communication system”, 201811101683.4
18. Zhang Xu, Zeng Tao, Li Jie, Meng Lingheng, Li Xiang, Yu Shaohua, “A CMA-based signal equalization method and system”, 201811362088.6
19. Wang Xi, Li Xiang, Luo Ming, “A polarization-independent coherent optical access method and system”, 201811399929.0
20. Dai Xiaoxiao, Li Xiang, “An optical IQ modulator parameter adjustment method and system”, 201811447417.7
21. He Zhixue, Luo Ming, Li Xiang, Yu Shaohua, “An ultra-dense wavelength division multiplexing passive fiber optic network transmission system and transmission method”, 201811468319.1
22. Li Si, Yang Chao, Li Xiang, Yu Shaohua, “The system and method for direct detection of intensity modulation based on carrier support”, 201811625121.X
