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DONGFANG
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Dongfang Xu

I am currently a Professor at College of Artificial Intelligence, Nanjing University of Aeronautics and Astronautics (NUAA). Previously, I was a Postdoctoral Fellow (from Jan. 2023 to Oct. 2023) and a Research Assistant Professor (from Nov. 2023 to Jan. 2026) at the Hong Kong University of Science and Technology (HKUST). In Dec. 2022, I received my Ph.D. degree (with distinction) in electrical engineering from Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany, under the supervision of Prof. R. Schober. Prior to that, I received my M.Sc. degree (grade 1.2, with distinction) in communications and multimedia engineering from FAU in Sept. 2017 and my B.Eng. degree in communication engineering from Shandong University (SDU), Jinan, China, in Jul. 2014, respectively.

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News

  • 01/2026, one paper has been accepted to IEEE Transactions on Wireless Communications (TWC).

  • 12/2025, one paper has been submitted to IEEE Journal on Selected Areas in Communications (JSAC).

  • 10/2025, one paper has been submitted to IEEE Transactions on Mobile Computing (TMC).

  • 10/2025, I have been ranked among 2025 World's Top 2% Scientists by Stanford University. Link

  • 09/2025, one paper has been accepted to IEEE Journal on Selected Areas in Communications (JSAC). Paper

  • 03/2025, I serve as an Editor of the IEEE Transactions on Communications (IEEE TCOM). Link

  • 03/2025, one paper has been accepted to IEEE Transactions on Information Theory (TIT).

  • 01/2025, one paper has been accepted to IEEE Journal of Selected Topics in Signal Processing (JSTSP).

  • 11/2024, I serve as an Editor of the IEEE Transactions on Mobile Computing (TMC).

  • 09/2024, I have been ranked among 2024 World's Top 2% Scientists by Stanford University. Link

  • 07/2024, one paper has been accepted to Proceedings of the IEEE. Paper

  • 06/2024, one paper has been accepted to Proceedings of the IEEE. Paper

  • 02/2024, one paper has been accepted to IEEE Communications Magazine. Code

  • 10/2023, I have been ranked among 2023 World's Top 2% Scientists by Stanford University. Link

  • 10/2023, I join the editorial board of the IEEE Communications Letters (IEEE COMML).

  • 04/2023, our paper on IRS-enabled robust and secure communication systems design has been awarded as IEEE Communications Society Leonard G. Abraham Prize. Announcement | Plaque

  • 01/2023, I join HKUST as a postdoctoral fellow.

    • Publications

    Journal Papers:

    1. Latent learning-based intelligent resource allocation for dynamic spectrum-sharing networks
      L. Yuan, D. Xu, F. Zhou, Q. Wu, and R. Q. Hu
      IEEE Trans. Wireless Commun., vol. 25, pp. 12066-12080, 2026. | Paper

    2. Joint radiation power, antenna position, and beamforming optimization for pinching-antenna systems with motion power consumption
      Y. Xu, D. Xu, X. Yu, S. Song, Z. Ding, and R. Schober
      IEEE Trans. Wireless Commun., vol. 25, pp. 7825-7841, 2026. | Paper

    3. Fluid antenna meets RIS: Random matrix analysis and two-timescale design for multi-user communications
      X. Zhang, D. Xu, Jingjing Wang, S. Song, D. W. K. Ng, and Mérouane Debbah
      IEEE J. Sel. Areas Commun., vol. 44, pp. 1400-1416, 2026. | Paper

    4. Sensing-aided near-field secure communications with mobile eavesdroppers
      Y. Xu, M. Zheng, D. Xu*, S. Song, and Daniel Benevides da Costa
      IEEE Trans. Wireless Commun., vol. 24, no. 11, pp. 9338-9356, Nov. 2025. | Paper

    5. Globally optimal movable antenna-enabled multiuser communication: Discrete antenna positioning, power consumption, and imperfect CSI
      Y. Wu, D. Xu*, D. Wing Kwan Ng, W. Gerstacker, and R. Schober
      IEEE Trans. Commun., vol. 73, no. 10, pp. 9903-9923, Oct. 2025. | Paper

    6. Fundamental limits of two-hop MIMO channels: An asymptotic approach
      Z. Zhuang, X. Zhang, D. Xu, and S. Song
      IEEE Trans. Inf. Theory, vol. 71, no. 6, pp. 4069-4111, Jun. 2025. | Paper

    7. RIS-aided secure communications with regularized zero-forcing precoding
      X. Zhang, D. Xu, Jingjing Wang, Chunxiao Jiang, S. Song, and Marco Di Renzo
      IEEE Trans. Inf. Forensics Secur., vol. 20, pp. 5843-5858, May 2025. | Paper

    8. Resolution-aware beam scanning for joint detection and communication in ISAC systems
      Y. Xu, D. Xu*, Zhanyuan Xie, Zheng Jiang, S. Song, and D. W. K. Ng
      Sci. China-Inf. Sci., 68(5): 150305, May 2025. (中科院1区, CCF A类) | Paper

    9. Decentralized MIMO systems with imperfect CSI using LMMSE receivers
      Z. Zhuang, X. Zhang, D. Xu, S. Song, and Yonina C. Eldar
      IEEE J. Sel. Top. Signal Process., vol. 19, no. 2, pp. 331-348, Mar. 2025. | Paper

    10. Sensing-assisted robust SWIPT for mobile energy harvesting receivers in networked ISAC systems
      Y. Xu, D. Xu*, and S. Song
      IEEE Trans. Wireless Commun., vol. 24, no. 3, pp. 2094-2109, Mar. 2025. | Paper

    11. Globally optimal resource allocation design for discrete phase shift IRS-assisted multiuser networks with perfect and imperfect CSI
      Y. Wu, D. Xu*, D. W. K. Ng, W. Gerstacker, and R. Schober
      IEEE Trans. Wireless Commun., vol. 24, no. 2, pp. 1306-1324, Feb. 2025. | Paper

    12. Efficient UAV hovering, resource allocation, and trajectory design for ISAC with limited backhaul capacity
      A. Khalili, A. Rezaei, D. Xu, F. Dressler, and R. Schober
      IEEE Trans. Wireless Commun., vol. 23, no. 11, pp. 17635-17650, Nov. 2024. | Paper

    13. Interference mitigation for network-level ISAC: An optimization perspective
      D. Xu, Y. Xu, X. Zhang, X. Yu, S. Song, and R. Schober
      IEEE Commun. Mag., vol. 62, no. 9, pp. 28-34, Sept. 2024. | Paper

    14. Resource allocation design for next-generation multiple access: A tutorial overview
      Z. Wei, D. Xu*, S. Li*, S. Song, D. W. K. Ng, and G. Caire
      Proc. IEEE, vol. 112, no. 9, pp. 1230-1263, Sept. 2024. | Paper

    15. Wireless information and energy transfer in the era of 6G communications
      C. Psomas, K. Ntougias, N. Shanin, D. Xu, K. Mayer, N. Tran, L. Cottatellucci, K. Choi, D. Kim, R. Schober, and I. Krikidis
      Proc. IEEE, vol. 112, no. 7, pp. 764-804, Jul. 2024. | Paper

    16. A framework for transmission design for active RIS-aided communication with partial CSI
      G. Zhou, C. Pan, H. Ren, D. Xu, Z. Zhang, J. Wang, and R. Schober
      IEEE Trans. Wireless Commun., vol. 23, no. 1, pp. 305-320, Jan. 2024. | Paper

    17. Robust and secure resource allocation for ISAC systems: A novel optimization framework for variable-length snapshots
      D. Xu, X. Yu, D. W. K. Ng, A. Schmeink, and R. Schober
      IEEE Trans. Commun., vol. 70, no. 12, pp. 8196-8214, Dec. 2022. | Paper

    18. Hybrid NOMA offloading in multi-user MEC networks
      Z. Ding, D. Xu, R. Schober, and H. Vincent Poor
      IEEE Trans. Wireless Commun., vol. 21, no. 7, pp. 5377-5391, Jul. 2022. | Paper

    19. Optimal resource allocation design for large IRS-assisted SWIPT systems: A scalable optimization framework
      D. Xu, V. Jamali, X. Yu, D. W. K. Ng, and R. Schober
      IEEE Trans. Commun., vol. 70, no. 2, pp. 1423-1441, Feb. 2022. | Paper

    20. Smart and reconfigurable wireless communications: From IRS modeling to algorithm design
      X. Yu, V. Jamali, D. Xu, D. W. K. Ng, and R. Schober
      IEEE Wireless Commun., vol. 28, no. 6, pp. 118-125, Dec. 2021. | Paper

    21. IRS-assisted green communication systems: provable convergence and robust optimization
      X. Yu, D. Xu*, D. W. K. Ng, and R. Schober
      IEEE Trans. Commun., vol. 69, no. 9, pp. 6313-6329, Sept. 2021. | Paper

    22. Resource allocation for IRS-assisted full-duplex cognitive radio systems
      D. Xu, X. Yu, Y. Sun, D. W. K. Ng, and R. Schober
      IEEE Trans. Commun., vol. 68, no. 12, pp. 7376-7394, Dec. 2020. | Paper

    23. Robust and secure wireless communications via intelligent reflecting surfaces
      X. Yu, D. Xu*, Y. Sun, D. W. K. Ng, and R. Schober
      IEEE J. Sel. Areas Commun., vol. 38, no. 11, pp. 2637-2652, Nov. 2020 (2023 IEEE Communications Society Leonard G. Abraham Prize). | Paper

    24. Multiuser MISO UAV communications in uncertain environments with no-fly zones: robust trajectory and resource allocation design
      D. Xu, Y. Sun, D. W. K. Ng, and R. Schober
      IEEE Trans. Commun., vol. 68, no. 5, pp. 3153-3172, May 2020. | Paper

    25. Optimal 3D-trajectory design and resource allocation for solar-powered UAV communication systems
      Y. Sun, D. Xu, D. W. K. Ng, L. Dai, and R. Schober
      IEEE Trans. Commun., vol. 67, no. 6, pp. 4281-4298, Jun. 2019 (2022 IEEE Communications Society Stephen O. Rice Prize). | Paper

    Conference Papers:

    1. Asymptotics of spiked covariance model with random projection
      Z. Zhuang, X. Zhang, D. Xu, and S. Song
      in IEEE Int. Symp. Inf. Theory (ISIT), Ann Arbor, MI, USA, 2025. | Paper

    2. HaDP: Edge inference via hardness-aware data partitioning
      C. W. W. Lam, D. Xu, and S. Song
      in Proc. IEEE Int. Mediterr. Conf. Commun. Netw. (MeditCom), Nice, France, Jul. 2025. | Paper

    3. Multi-modal self-supervised semantic communication
      H. Zhao, H. Li, D. Xu, S. Song, and K. Letaief
      in Proc. IEEE Int. Mediterr. Conf. Commun. Netw. (MeditCom), Nice, France, Jul. 2025. | Paper

    4. Asymptotics of spiked covariance model with random projection
      Z. Zhuang, X. Zhang, D. Xu, and S. Song
      in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Michigan, USA, Mar. 2025. | Paper

    5. Finite blocklength analysis for optical fiber MIMO channels
      X. Zhang, D. Xu, X. Yu, S. Song, and M. Debbah
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Cape Town, South Africa, Dec. 2024. | Paper

    6. Active IRS-aided MIMO communications: How much gain can we get?
      Z. Zhuang, X. Zhang, D. Xu, and S. Song
      in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Dubai, United Arab Emirates, Apr. 2024. | Paper

    7. IRS-aided secure communications with linear precoding: Performance analysis and system design
      X. Zhang, D. Xu, and S. Song
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, Dec. 2023. | Paper

    8. Movable antenna-enhanced multiuser communication: Jointly optimal discrete antenna positioning and beamforming
      Y. Wu, D. Xu, D. W. K. Ng, R. Schober, and W. Gerstacker
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, Dec. 2023. | Paper

    9. Joint BS selection, user association, and beamforming design for network integrated sensing and communication
      Y. Xu, D. Xu, L. Xie, and S. Song
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, Dec. 2023. | Paper

    10. Energy-aware resource allocation and trajectory design for UAV-enabled ISAC
      A. Khalili, A. Rezaei, D. Xu, and R. Schober
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, Dec. 2023. | Paper

    11. Fundamental limits and base station selection for collaborative sensing in perceptive mobile network
      Y. Xu, D. Xu, L. Xie, and S. Song
      in Proc. IEEE Int. Mediterr. Conf. Commun. and Netw. (MeditCom), Dubrovnik, Croatia, Sept. 2023. | Paper

    12. Multi-objective optimization for active IRS-assisted communication systems
      D. Xu, X. Yu, S. Song, D. W. K. Ng, and R. Schober
      in Proc. IEEE Int. Mediterr. Conf. Commun. and Netw. (MeditCom), Dubrovnik, Croatia, Sept. 2023. | Paper

    13. Sensing-enhanced secure communication: Joint time allocation and beamforming design
      D. Xu, Y. Xu, Z. Wei, S. Song, and D. W. K. Ng
      in Proc. IEEE Int. Symp. Model. Optim. Mob., Ad hoc, Wireless Netw. (WiOpt), Singapore, Aug. 2023 (Invited Paper). | Paper CoA

    14. Integrated sensing and communication in coordinated cellular networks
      D. Xu, C. Liu, S. Song, and D. W. K. Ng
      in Proc. IEEE Stat. Signal Process. Wkshps. (SSP), Hanoi, Vietnam, Jul. 2023 (Invited Paper). | Paper CoA

    15. Integrated sensing and communication in distributed antenna networks
      D. Xu, A. Khalili, X. Yu, D. W. K. Ng, and R. Schober
      in Proc. IEEE Int. Conf. Commun. (ICC), Rome, Italy, May 2023. | Paper

    16. Globally optimal resource allocation design for IRS-assisted multiuser networks with discrete phase shifts
      Y. Wu, D. Xu, D. W. K. Ng, R. Schober, and W. Gerstacker
      in Proc. IEEE Int. Conf. Commun. (ICC), Rome, Italy, May 2023. | Paper

    17. Resource allocation for active IRS-assisted multiuser communication systems
      D. Xu, X. Yu, D. W. K. Ng, and R. Schober
      in Proc. Asilomar Conf. Signals, Systems, and Computers, Pacific Grove, CA, USA, Oct. 2021 (Invited Paper). | Paper CoA

    18. Resource allocation for large IRS-assisted SWIPT systems with non-linear energy harvesting model
      D. Xu, X. Yu, V. Jamali, D. W. K. Ng, and R. Schober
      in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Nanjing, China, Mar. 2021. | Paper

    19. Power-efficient resource allocation for multiuser MISO systems via intelligent reflecting surfaces
      X. Yu, D. Xu, D. W. K. Ng, and R. Schober
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Taipei, Taiwan, Dec. 2020. | Paper

    20. Resource allocation for intelligent reflecting surface-assisted cognitive radio networks
      D. Xu, X. Yu, and R. Schober
      in Proc. IEEE Int. Wkshps. Signal Process. Adv. Wireless Commun. (SPAWC), Atlanta, GA, USA, May 2020 (Invited Paper). | Paper

    21. Optimal beamforming for MISO communications via intelligent reflecting surfaces
      X. Yu, D. Xu, and R. Schober
      in Proc. IEEE Int. Wkshps. Signal Process. Adv. Wireless Commun. (SPAWC), Atlanta, GA, USA, May 2020 (Invited Paper). | Paper

    22. Enabling secure wireless communications via intelligent reflecting surfaces
      X. Yu, D. Xu, and R. Schober
      in Proc. IEEE Global Commun. Conf. (GLOBECOM), Waikoloa, HI, USA, Dec. 2019 (Best Paper). | Paper

    23. Resource allocation for secure IRS-assisted multiuser MISO systems
      D. Xu, X. Yu, Y. Sun, D. W. K. Ng, and R. Schober
      in Proc. Global Commun. Conf. (GLOBECOM), Waikoloa, HI, USA, Dec. 2019. | Paper

    24. MISO wireless communication systems via intelligent reflecting surfaces
      X. Yu, D. Xu, and R. Schober
      in Proc. IEEE/CIC Int. Conf. Commun. in China (ICCC), Changchun, China, Aug. 2019 (Invited Paper). | Paper

    25. Robust resource allocation for UAV systems with UAV jittering and user location uncertainty
      D. Xu, Y. Sun, D. W. K. Ng, and R. Schober
      in Proc. Global Commun. Conf. (GLOBECOM), Abu Dhabi, United Arab Emirates, Dec. 2018. | Paper

    26. Resource allocation for solar powered UAV communication systems
      Y. Sun, D. W. K. Ng, D. Xu, L. Dai, and R. Schober
      in Proc. IEEE Int. Wkshps. Signal Process. Adv. Wireless Commun. (SPAWC), Kalamata, Greece, Jun. 2018 (Invited Paper). | Paper

    Professional Services

  • Associate Editor of the IEEE Transactions on Communications. Link

  • Associate Editor of the IEEE Transactions on Mobile Computing. Link

  • Associate Editor of the IEEE Communications Letters. Link

  • Session Chair of IEEE Globecom 2023 Wireless Communication Symposium.

  • Technical Program Committee Members of

    • 2023 International Symposium on Electrical and Electronics Engineering (ISEE)

    • 2023 IEEE Vehicular Technology Conference Fall on Signal Transmission and Reception

    • 2023 IEEE Vehicular Technology Conference Fall on Radio Access Technology and Heterogeneous Networks

    • 2023 IEEE Global Communications Conference: Selected Areas in Communications: Integrated Sensing and Communication (ISAC)

    • 2023 IEEE International Conference on Communications Workshop (ICC Wkshp) on Integrated Sensing and Communication (ISAC)

    • 2023 IEEE International Conference on Communications (ICC) - IoT and Sensor Networks (IoTSN) Symposium

  • Journal Reviewer of IEEE Trans. Wireless Commun., IEEE Trans. Commun., IEEE J. Sel. Areas Commun., IEEE Trans. Signal Process., IEEE Trans. Veh. Technol., IEEE Commun. Lett., IEEE Wirel. Commun. Lett., etc.

    • Miscellaneous

  • Master Thesis Supervisions:

    • Deep learning-aided resource allocation for wireless communication systems,
      Taoyu Yang, 2019.06--2019.12, Grade: 1.7. Announcement | Thesis

    • Multi-objective optimization for power efficient active IRS-assisted communication system,
      Dawei Shao, 2021.10--2022.03, Grade: 1.3. Announcement | Thesis

  • Internship Project Supervisions:

    • Resource allocation and trajectory design for secure UAV communication in the presence of no-fly zones,
      Tailai Huang, 2020.01--2020.07, Passed. Announcement

    • Resource allocation design for simultaneously transmitting and reflecting (STAR)-IRS assisted communication systems,
      Dawei Shao, 2022.05--2022.10, Passed. Announcement

  • My Theses:

    • Optimized resource allocation for future wireless communication systems,
      D. Xu, 2022.12.20, Grade: 1.0. Slides | Thesis

    • Selected Awards and Honors

  • 2025 World's Top 2% Scientists by Stanford University for citation impact | List

  • 2024 World's Top 2% Scientists by Stanford University for citation impact | List

  • 2023 Exemplary Reviewer of IEEE Communications Letters | Certificate

  • 2023 IEEE Communications Society Leonard G. Abraham Prize | Plaque

  • 2023 World's Top 2% Scientists by Stanford University for citation impact | List

  • Passed with Distinction (Dr.-Ing.), FAU, Dec. 2022 | Certificate

  • 2022 Exemplary Reviewer of IEEE Transactions on Communications | Certificate

  • 2022 IEEE Communications Society Stephen O. Rice Prize | Plaque

  • 2022 World's Top 2% Scientists by Stanford University for citation impact | List

  • 2021 Exemplary Reviewer of IEEE Transactions on Communications | Certificate

  • 2021 FAU Laboratoriums für Nachrichtentechnik "Goldener Igel" Publikationspreis | Trophy

  • 2020 Exemplary Reviewer of IEEE Transactions on Communications | Certificate

  • IEEE GLOBECOM 2019 Best Paper Award | Plaque

  • 2010 Shandong Province Merit Student (1‰)

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