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W. Huang, W. Zhang, X. Du* and C. Guo, "Population transfer under local dephasing," EPJ Quantum Technology, vol. 9, no. 34, 2022. (2021 JCR Q1, IF: 7.000)
S. Liu, X. Du* and C. Yu, "H∞ filter-based dynamic joint carrier frequency offset and linear phase noise tracking for CO-OFDM systems," Optics Express, vol. 30, no. 23, pp. 41157-41170, 2022. (2020 JCR Q1, IF: 3.894)
X. Du, Y. Xu, W. Huang and C. Yu, "Dynamic joint frequency offset and phase noise tracking by number-theoretic net-based Gaussian particle filter in coherent optical systems," IEEE Communications Letters, vol. 26, no. 6, pp. 1388-1392, 2022. (JCR Q2, IF: 3.553)
W. Huang, S. Liu, C. Guo, S. Cao, S. Yin, X. Du* and W. Zhang, “Quantum master equation for coupling mechanism of metamaterial”, Results in Physics, vol. 34, no. 105262, 2022. (JCR Q1, IF: 4.476)
X. Du, T. Song, Y. Li, M. Wu and P. Y. Kam, “An optimum signal detection approach to the joint ML estimation of timing offset, carrier frequency and phase offset for coherent optical OFDM,” Journal of Lightwave Technology, vol. 39, no. 6, 2021. (JCR Q1, IF: 4.288)
W. Wang, Y. Liu, X. Du, X. Zhong, C. Yu and X. Chen, “Ultra-stable and real-time demultiplexing system of strong fiber Bragg grating sensors based on low-frequency optoelectronic oscillator,” Journal of Lightwave Technology, vol. 38, no. 4, pp. 981-988, 2020. (JCR Q1, IF: 4.288)
X. Du, P. Y. Kam and C. Yu, “Joint timing and frequency synchronization in coherent optical OFDM systems,” Frontiers of OptoElectronics, vol. 12, no. 1, pp. 4-14, 2019. (Invited Paper)
Y. Li, M. Wu, X. Du, T. Song and P. Y. Kam, “A refinement to the Viterbi-Viterbi carrier phase estimator and an extension to the case with a Wiener carrier phase process,” IEEE Access, vol. 7, pp. 78170-78184, 2019. (JCR Q1, IF: 3.745)
W. Wang, L. Huang, J. Tao, H. Zhu, X. Du, L. Hao, C. Yu and X. Chen, “Tunable multiple-passband microwave photonic filter based on external optical injected Fabry-Perot laser,” Optics Express, vol. 27, no. 9, pp. 12491-12503, 2019. (JCR Q1, IF: 3.669)
X. Du, T. Song, and P. Y. Kam, “Carrier frequency offset estimation for CO-OFDM: the matched filter approach”, Journal of Lightwave Technology, vol. 36, no. 14, pp. 2955-2965, 2018. (JCR Q1, IF: 4.288)
M. Wu, T. Song, Y. Li, X. Du and P. Y. Kam, “On-off rate-controlled wireless transmission using ARQ with channel gain monitoring—the infinite achievable diversity order,” IEEE Wireless Communication Letters, vol. 8, no. 4, 2019. (JCR Q1, IF: 4.66)
Y. Li, M. Wu, X. Du, Z. Xu, M. Gurusamy, C. Yu and P. Y. Kam, “Nonlinear phase noise tolerance for coherent optical systems using soft-decision-aided ML carrier phase estimation enhanced with constellation partitioning,” Optics Communications, vol. 409, pp. 45-51, 2018. (JCR Q2, IF: 2.125)
M. Zhu, J. Zhang, X. Yi, Y. Song, B. Xu, X. Li, X. Du and K. Qiu, “Hilbert superposition and modified signal-to-signal beating interference cancellation for signal side-band optical NPAM-4 direct-detection system,” Optics Express, vol. 25, no. 11, pp. 12622-12631, 2017. (JCR Q1, IF: 3.669)
X. Du, J. Zhang, Y. Li, C. Yu and P. Y. Kam, “Efficient joint timing and frequency synchronization algorithms for coherent optical OFDM systems,” Optics Express, vol. 24, no. 17, pp.19969-19977, 2016. (JCR Q1, IF: 3.669)
Conference Paper
Y. Xu, X. Du*, S. Liu and C. Yu, “Number-theoretic net-based particle filtering for linear phase noise tracking in CO-OFDM systems,” in International Conference on Optical Communications and Networks (ICOCN’2022), accepted.
S. Liu, X. Du*, P. Y. Kam and C. Yu, “Bayesian filter-based dynamic joint estimation of carrier frequency offset and linear phase noise for CO-OFDM systems,” in International Conference on Optical Instrument and Technology (OIT’2021), paper OIT200-3 (invited talk).
H. Deng and X. Du, “Extended Kalman-particle filter-based phase noise compensation for CO-OFDM systems”, in International Conference on Optical Instrument and Technology (OIT’2021), paper OIT200-14.
R. Wang, X. Du*, C. Yu and P. Y. Kam, “Carrier frequency offset estimation by resampling-free uniform particle filter for CO-OFDM,” in Asia Communications and Photonics Conference (ACP’2021), paper T4A.106, 24-27 Oct. 2021.
X. Du, X. Fu, Q. Wang, P. Y. Kam and C. Yu, “Performance Analysis of Matched Filter-based Carrier Frequency Offset Estimation Methods for CO-OFDM,” in the 26th Optoelectronic and Communications Conference (OECC), accepted, 3-7 July 2021.
Q. Wang, Z. Quan, X. Du, S. Bi, P. Y. Kam and C. Yu, “Optimized M-APSK Constellation Design based on Error Rate Formulation in Laser Phase Noise,” in the 26th Optoelectronic and Communications Conference (OECC), paper W1B.3, 3-7 July 2021.
X. Du, C. Yu and P. Kam, “A simplified blind carrier frequency offset estimation algorithm based on the power of zero-subcarriers for CO-OFDM systems,” in Asia Communications and Photonics Conference/International Conference on Information Photonics and Optical Communications 2020 (ACP/IPOC), OSA Technical Digest (Optical Society of America, 2020), paper M4A.244.
X. Du, H. Luo and C. Yu, “A simplified matched filter-based approach for carrier frequency offset estimation in CO-OFDM”, in Proc. SPIE 11547, Optoelectronic Devices and Integration IX, paper 115470A, 2020.
H. Luo, Z. Huang, X. Du and C. Yu, “Effect of bandwidth of direct detection receiver on multiparameter optical performance monitoring,” in Proc. SPIE 11555, Real-time Photonic Measurements, Data Management and Processing V, paper 115550H (invited), 2020.
W. Wang, Y. Liu, X. Du, Y. Yan, C. Yu and X. Chen, “A novel demodulation method of fiber Bragg grating sensor array based on wavelength-to-time mapping and multiloop optoelectronic oscillator,” in Optical Fiber Communication Conference (OFC) 2020, OSA Technical Digest (Optical Society of America, 2020) , paper Th3F.2.
Y. Li, M. Wu, X. Du, G. Mohan, C. Yu and P. Y. Kam, “Maximum-likelihood Mth power carrier phase estimation for coherent optical communication,” in Conference on Lasers and Electro-Optics/Pacific Rim (CLEO-PR), Hong Kong, China, 2018, paper W4I.6.
Z. Xu, Y. Li, X. Du, M. Gurusamy, C. Yu and P. Y. Kam, “Accurate laser linewidth estimation for coherent optical systems using DA-ML carrier phase estimator,” in International Conference on Optical Communications and Networks (ICOCN), Wuzhen, China, 2017, pp. 1-3.
Y. Li, X. Du, M. Gurusamy, C. Yu and P. Y. Kam, “Performance of two-dimentional ML deterctor with laser phase noise and frequency offset,” in 2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC), Singapore, 2017, pp. 1-4.
X. Du, Y. Li, M. Gurusamy, C. Yu and P. Y. Kam, “Chromatic dispersion monitoring by extended Kalman filter for coherent optical OFDM systems,” in 2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC), Singapore, 2017, pp. 1-4.
X. Du, J. Zhang, Y. Li, Z. Xu, M. Gurusamy, C. Yu and P. Y. Kam, “Efficient blind carrier frequency offset estimation for coherent optical OFDM systems,” in Signal Processing in Photonic Communications (SPPCOM 2017), paper SpW1F.1.
Y. Li, X. Du, Z. Xu, M. Gurusamy, C. Yu and P. Y. Kam, “Accurate laser linewidth estimation using the DA-ML carrier phase estimator,” in Signal Processing in Photonic Communications (SPPCOM 2017), paper SpW1F.3.
Z. Xu, X. Du, M. Gurusamy, C. Yu and P. Y. Kam, “Block decision-aided laser phase noise estimation for coherent optical OFDM systems,” in International Conference on Optical Communications and Networks (ICOCN), Wuzhen, China, 2017, pp. 1-3.
X. Du, J. Zhang, C. Yu and P. Y. Kam, “Blind carrier frequency offset estimation for coherent optical OFDM systems,” in Signal Processing in Photonic Communications (SPPCOM 2016), paper SpW2G.3.
X. Du, J. Zhang and C. Yu, “A novel timing offset estimation method for coherent optical OFDM systems,” in Asia Communications and Photonics Conference (ACP 2015), paper AS4F.5.
Invited Talk
X. Du, “Carrier Recovery by Number-Theoretic Net-based Bayesian Filtering in Coherent Optical Communication Systems”, in International Conference on Optical Communications and Networks (ICOCN’2022), invited talk.
X. Du, “Bayesian filter-based dynamic joint estimation of carrier frequency offset and linear phase noise for CO-OFDM systems,” in International Conference on Optical Instrument and Technology (OIT’2021), invited talk.
X. Du, “Matched Filter-based Optimum Synchronization in CO-OFDM Systems,” in the 19th International Conference on Optical Communications and Networks (ICOCN’2021), 23-27 Aug. 2021, invited talk.
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