Wireless communications and networking, stochastic network optimization, energy-efficient communications, cross-layer design, and adaptive signal processing for communications.

• Senior Member of the IEEE: 2009–
• IEEE Distinguished Lecturer for Vehicular Technology Society: 2018–
• Senior Area Editor, IEEE Transactions on Signal Processing: 2019–
• Editor, IEEE Transactions on Wireless Communications: 2018–
• Associate Editor, IEEE Transactions on Signal Processing: 2015–2019
• Editor, IEEE Transactions on Vehicular Technology: 2012–2019
• Associate Editor, IEEE Signal Processing Letters: 2013–2015.
• Guest Editor, IEEE Access, Special Section on Energy-Efficient Wireless Communications with Energy Harvesting and Wireless Power Transfer: 2017

China Institute of Communications Natural Science Award, 2018

IEEE Transactions on Wireless Communications Best Reviewer, 2017

IEEE Transactions on Communications Exemplary Reviewer, 2017

WCSP Best Paper Award, 2017

GLOBECOM Best Paper Award finalist, 2014

Innovation Program of Shanghai Municipal Education Commission, 2013

Program for New Century Excellent Talents in University, 2013

Okawa Foundation Grant Award, 2013

Shanghai Recruitment Program of Global Experts, 2012

China Recruitment Program of Global Young Experts, 2011

US National Science Foundation Grant Award: 2008-2011, 2015-2018, 2017-2020

Researcher of the Year, College of Engineering and Computer Science, FAU 2009

Professional Preparation

Ph.D.   Electrical and Computer Engineering       Auburn University, AL, USA.                 2004

M.S.    Electrical Engineering                               Fudan University, Shanghai, China          2000

B.S.     Electrical Engineering                               Fudan University, Shanghai,China          1997

Appointments

Dec. 2018 – present:      Chair                                             Dept. of CSE, Fudan University

Jan. 2015 – Dec. 2018:  Associate Chair                             Dept. of CSE, Fudan University

Jun. 2012 – present:       Distinguished Professor                Dept. of CSE, Fudan University

Aug. 2010 – Jun. 2016:   Associate Professor                      Dept. of CEECS, Florida Atlantic Univ.

Aug. 2006 – Aug. 2010: Assistant Professor                  Dept. of CEECS, Florida Atlantic Univ.

Aug. 2004 – Aug. 2006: Postdoctoral Associate            Dept. of ECE, University of Minnesota

• S. Hu, X. Chen, W. Ni, E. Hossain, and X. Wang, “Distributed Machine Learning for Wireless Communication Networks: Techniques, Architectures, and Applications,” IEEE Communications Surveys and Tutorials, vol. 23, no. 3, pp. 3rd-quarter 2021.
• C. Sun, W. Ni, and X. Wang, “Joint Computation Offloading and Trajectory Planning for UAV-Assisted Edge Computing,” IEEE Transactions on Wireless Communications, vol. 20, no. 8, pp. Aug. 2021.
  
• X. Chen, Z. Lu, W. Ni, X. Wang, F. Wang, S. Zhang, and S. Xu, “Cooling-Aware Optimization of Edge Server Configuration and Edge Computation Offloading for Wirelessly Powered Devices,” IEEE Transactions on Vehicular Technology, vol. 70, no. 5, pp. 5043-5056, May. 2021.
  
• J. He, R. Qu, C. Xu, H. Feng, and X. Wang, “A Hypergraph Filtering based Iterative Decoding Approach for Linear Channel Codes,” IEEE Access, vol. 9, no. 71932-71941, May 2021.
  
• B. Wu, T. Chen, K. Yang, and X. Wang, “Edge-Centric Bandit Learning for Task-Offloading Allocations in Multi-RAT Heterogeneous Networks,” IEEE Transactions on Vehicular Technology, vol. 70, no. 4, pp. 3702-3714, Apr. 2021.
  
• F. Li, Y. Jiang, C. Du, and X. Wang, “Construction of Golay Complementary Matrices and Its Applications to MIMO Omnidirectional Transmission,” IEEE Transactions on Signal Processing, vol. 69, pp. 2100-2113, Apr. 2021.
• S. Hu, W. Ni, X. Wang, A. Jamalipour, and D. Ta, “Joint Optimization of Trajectory, Propulsion and Thrust Powers for Covert UAV-on-UAV Video Tracking and Surveillance,” IEEE Transactions on Information Forensics and Security, vol. 16, pp. 1959-1972, Feb. 2021.
• S. Hu, Q. Wu, and X. Wang, “Energy Management and Trajectory Optimization for UAV-Enabled Legitimate Monitoring Systems,” IEEE Transactions on Wireless Communications, vol. 20, no. 1, pp. 142-155, Jan. 2021.
• X. Chen, J. Cui, W. Ni, X. Wang, Y. Zhu, J. Zhang, and S. Xu, “DFT-s-OFDM: Enabling Flexibility in Frequency Selectivity and Multiuser Diversity for 5G,” IEEE Consumer Electronics Magazine, vol. 9, no. 6, pp. 15-22, Nov. 2020.
• S. Jiang, X. Yuan, X. Wang, C. Xu, and W. Yu, “Joint User Identification, Channel Estimation, and Signal Detection for Grant-Free NOMA,” IEEE Transactions on Wireless Communications, vol. 19, no. 10, pp. 6960-6976, Oct. 2020.
• H. Huang, Z. Sun, and X. Wang, “End-to-End TCP Congestion Control for Mobile Applications,” IEEE Access, vol. 8, pp. 171628-171642, Sep. 2020.
• S. Hu, X. Chen, W. Ni, X. Wang, and E. Hossain, “Modeling and Analysis of Energy Harvesting and Smart Grid-Powered Wireless Communication Networks: A Contemporary Survey,” IEEE Transactions on Green Communications and Networking, vol. 4, no. 2, pp. 461-496, Jun. 2020.
• M. Xiong, Q. Liu, M. Liu, P. Xia, and X. Wang, “Resonant Beam Communications with Photovoltaic Receiver for Optical Wireless Data Transfer,” IEEE Transactions on Communications, vol. 68, no. 5, pp. 3033-3041, May 2020.
• X. Wei, Y. Jiang, Q. Liu, and X. Wang, “Calibration of Phase Shifter Network for Hybrid Beamforming in mmWave Massive MIMO Systems,” IEEE Transactions on Signal Processing, vol. 68, pp. 2302–2315, Apr. 2020.
• W. Fang, G. Wang, G. B. Giannakis, Q. Liu, P. Xia, and X. Wang, “Channel-Dependent Scheduling in Wireless Energy Transfer for Mobile Devices,” IEEE Transactions on Vehicular Technology, vol. 69, no. 3, pp. 3330-3340, Mar. 2020.
• X. Chen, W. Ni, T. Chen, I. Collings, X. Wang, and G. Giannakis, “Multi-Timescale Online Optimization of Network Function Virtualization for Service Chaining,” IEEE Transactions on Mobile Computing, vol. 18, no. 12, pp. 2899-1912, Dec. 2019.
• D. Su, Y. Jiang, X. Wang, and X. Gao, “Omnidirectional Precoding for Massive MIMO with Uniform Rectangular Array – Part II: Numerical Optimization based Schemes,” IEEE Transactions on Signal Processing, vol. 67, no. 18, pp. 4772-2781, Sept. 2019.
• D. Su, Y. Jiang, X. Wang, and X. Gao, “Omnidirectional Precoding for Massive MIMO with Uniform Rectangular Array – Part I: Complementary Codes based Schemes,” IEEE Transactions on Signal Processing, vol. 67, no. 18, pp. 4761-4771, Sept. 2019.
• S. Bi, Z. Fang, X. Yuan, and X. Wang, “Joint Base Station Activation and Coordinated Downlink Beamforming for HetNets: Efficient Optimal and Suboptimal Algorithms,” IEEE Transactions on Vehicular Technology, vol. 68, no. 4, pp. 3702-3712, Apr. 2019.
• T. Chen, S. Barbarossa, X. Wang, G. Giannakis, and Z. Zhang, “Learning and Management for Internet of Things: Accounting for Adaptivity and Scalability,” Proceedings of the IEEE, vol. 107, no. 4, pp. 778-796, Apr. 2019. [invited paper]
• B. Li, T. Chen, X. Wang, and G. Giannakis, “Real-time Energy Management in Microgrids with Reduced Battery Capacity Requirements,” IEEE Transactions on Smart Grid, vol. 10, no. 2, pp. 1928-1938, Mar. 2019.
• X. Chen, W. Ni, I. Collings, X. Wang, and S. Xu, “Automated Function Placement and Online Optimization of Network Functions Virtualization,” IEEE Transactions on Communications, vol. 67, no. 2, pp. 1225-1237, Feb. 2019.
• X. Lyu, W. Ni, H. Tian, R. Liu, X. Wang, G. Giannakis, and A. Paulraj, “Distributed Online Optimization of Fog Computing for Selfish Devices with Out-of-Date Information,” IEEE Transactions on Wireless Communications, vol. 17, no. 11, pp. 7704-7717, Nov. 2018.
• S. Hu, C. Xu, X. Wang, and Y. Huang, S. Zhang, “A Stochastic ADMM Approach to Distributed Coordinated Multicell Beamforming for Renewables Powered Wireless Cellular Networks,” IEEE Transactions on Vehicular Technology, vol. 67, no. 9, pp. 8595-8607, Sep. 2018.
• X. Wang, X. Chen, T. Chen, L. Huang, and G. B. Giannakis, “Two-Scale Stochastic Control for Integrated Multipoint Communication Systems with Renewables,” IEEE Transactions on Smart Grid, vol. 9, no. 3, pp. 1822-1834, May 2018.
• F. Wang, J. Xu, X. Wang, and S. Cui, “Joint Offloading and Computing Optimization in Wireless Powered Mobile-Edge Computing Systems,” IEEE Transactions on Wireless Communications, vol. 17, no. 3, pp. 1784-1797, Mar. 2018.
• X. Lyu, W. Ni, H. Tian, R. Liu, X. Wang, G. Giannakis, and A. Paulraj, “Optimal Schedule of Mobile Edge Computing for Internet of Things using Partial Information,” IEEE Journal on Selected Areas in Communications, vol. 35, no. 11, pp. 2606-2615, Nov. 2017.
• X. Chen, W. Ni, T. Chen, I. B. Collings, X. Wang, and G. Giannakis, “Real-Time Energy Trading and Future Planning for Fifth Generation Wireless Communications,” IEEE Wireless Communications Magazine, vol. 24, no. 4, pp. 24–30, Aug. 2017.
• T. Chen, A. Mokhtari, X. Wang, A. Ribeiro, and G. B. Giannakis, “Stochastic Averaging for Constrained Optimization with Application to Online Resource Allocation,” IEEE Transactions on Signal Processing, vol. 65, no. 12, pp. 3078–3093, Jun. 2017.
• F. Wang, C. Xu, Y. Huang, X. Wang, and X. Gao, “REEL-BF Design: Achieving the SDP Bound for Downlink Beamforming with Arbitrary Shaping Constraints,” IEEE Transactions on Signal Processing, vol. 65, no.10, pp. 2672–2685, May 2017.
• W. Ni, M. Abolhasan, B. Hagelstein, R. Liu, and X. Wang, “A New Trellis Model for MAC Layer Cooperative Retransmission Protocols,” IEEE Transactions on Vehicular Technology, vol. 66, no. 4, pp. 3448–3461, Apr. 2017.
• X. Wang, T. Chen, X. Chen, X. Zhou, and G. B. Giannakis, “Dynamic Resource Allocation for Smart-Grid Powered MIMO Downlink Transmissions,” IEEE Journal on Selected Areas in Communications, vol. 34, no. 12, pp. 3354–3365, Dec. 2016.
• X. Wang, T. Ma, R. Zhang, and X. Zhou, “Stochastic Online Control for Energy Harvesting Wireless Networks with Battery Imperfections,” IEEE Transactions on Wireless Communications, vol. 15, no. 12, pp. 8437–8448, Dec. 2016.
• S. Hu, Y. Zhang, X. Wang, and G. B. Giannakis, “Weighted Sum-Rate Maximization for MIMO Downlink Systems Powered by Renewables,” IEEE Transactions on Wireless Communications, vol. 15, vol. 8, pp. 5615-5625, Aug. 2016.
• Z. Nan, T. Chen, X. Wang, and W. Ni, “Energy-Efficient Transmission Schedule for Delay-Limited Bursty Data Arrivals under Nonideal Circuit Power Consumption,” IEEE Transactions on Vehicular Technology, vol. 65, no. 8, pp. 6588-6600, Aug. 2016.
• Z. Fang, X. Yuan, X. Wang, and C. Li, “Nonregenerative Cellular Two-Way Relaying with Large-Scale Antenna Arrays,” IEEE Transactions on Vehicular Technology, vol. 65, no. 7, pp. 4959-4972, Jul. 2016.
• K. Li, W. Ni, X. Wang, R. Liu, S. Kanhere, and S. Jha, “Energy-Efficient Cooperative Relaying for Unmanned Aerial Vehicles,” IEEE Transactions on Mobile Computing, vol. 15, no. 6, pp. 1377-1386, Jun. 2016.
• X. Wang, Y. Zhang, T. Chen, and G. B. Giannakis, “Dynamic Energy Management for Smart-Grid Powered Coordinated Multipoint Systems,” IEEE Journal on Selected Areas in Communications, vol. 34, no. 5, pp. 1348-1359, May 2016.
• X. Chen, W. Ni, X. Wang, and Y. Sun, “Optimal Quality-of-Service Scheduling for Energy-Harvesting Powered Wireless Communications,” IEEE Transactions on Wireless Communications, vol. 15, vol. 5, pp. 3269-3280, May 2016.
• T. Chen, Y. Zhang, X. Wang, and G. B. Giannakis, “Robust Workload and Energy Management for Sustainable Data Centers,” IEEE Journal on Selected Areas in Communications, vol. 34, no. 3, pp. 651-664, Mar. 2016.
• T. Chen, X. Wang, and G. B. Giannakis, “Cooling-Aware Energy and Workload Management in Data Center via Stochastic Optimization,” IEEE Journal of Selected Topics in Signal Processing, vol. 10, no. 2, pp. 402-415, Mar. 2016.
• X. Wang, Y. Zhang, G. B. Giannakis, and S. Hu, “Robust Smart-Grid Powered Cooperative Multipoint Systems,” IEEE Transactions on Wireless Communications, vol. 14, no. 11, pp. 6188-6199, Nov. 2015.
• F. Wang, T. Peng, Y. Huang, and X. Wang, “Robust Transceiver Optimization for Power-Splitting based Downlink MISO SWIPT Systems,” IEEE Signal Processing Letters, vol. 22, no. 9, pp. 1492-1496, Sep. 2015.
• T. Chen, H. Shan, and X. Wang, “Optimal Scheduling for Wireless On-Demand Data Packet Delivery to High-Speed Trains,” IEEE Transactions on Vehicular Technology, vol. 64, no. 9, Sep. 2015.
• F. Wang, Y. Huang, X. Wang, and Y. Zhu, “Robust Beamforming Designs for Multiuser MISO Downlink with Per-Antenna Power Constraints,” EURASIP Journal on Wireless Communications and Networking, DOI: 10.1186/s13638-015-0428-9, Aug. 2015.
• Z. Fang, X. Yuan, and X. Wang, “Distributed Energy Beamforming for Simultaneous Wireless Information and Power Transfer in the Two-Way Relay Channel,” IEEE Signal Processing Letters, vol. 22, no. 6, pp. 656-660, Jun. 2015.
• X. Wang, Z. Nan, and T. Chen, “Optimal MIMO Broadcasting for Energy Harvesting Transmitter with Non-Ideal Circuit Power Consumption,” IEEE Transactions on Wireless Communications, vol. 14, no. 5, pp. 2500-2512, May 2015.
• W. Ni, I. Collings, X. Wang, R. Liu, A. Kajan, and M. Hedley, “Radio Alignment for Inductive Charging of Electric Vehicles,” IEEE Transactions on Industrial Informatics, vol. 11, no. 2, pp. 427-440, Apr. 2015.
• X. Chen, W. Ni, X. Wang, and Y. Sun, “Provisioning Quality-of-Service to Energy Harvesting Wireless Communications,” IEEE Communications Magazine, vol. 53, no. 4, pp. 102-109, Apr. 2015.
• W. Ni, I. Collings, J. Lipman, X. Wang, M. Tao, and M. Abolhasan, “Graph Theory and Its Applications to Future Network Planning: Software-Defined Online Small Cell Management,” IEEE Wireless Communications Magazine, vol. 22, no. 1, pp. 52-60, Feb. 2015.
• T. He, X. Wang, and W. Ni, “Optimal Chunk-based Resource Allocation for OFDMA Systems with Multiple BER Requirements,” IEEE Transactions on Vehicular Technology, vol. 63, no. 9, pp. 4292–4301, Nov. 2014.
• W. Ni, R. Liu, J. Biswas, X. Wang, I. Collings, and S. Jha, “Multiuser MIMO Scheduling for Mobile Video Applications,” IEEE Transactions on Wireless Communications, vol. 13, no. 10, pp. 5382-5395, Oct. 2014.
• W. Ni, I. Collings, X. Wang, and R. Liu, “Multi-hop Point-to-Point FDD Wireless Backhaul for Mobile Small Cells,” IEEE Wireless Communications Magazine, vol. 21, no. 4, pp. 88-96, Aug. 2014.
• Z. Fang, X. Yuan, and X. Wang, “Towards the Asymptotic Sum Capacity of the MIMO Cellular Two-Way Relay Channel,” IEEE Transactions on Signal Processing, vol. 62. No. 16, pp. 4039-4051, Aug. 2014.
• X. Wang, Z. Li, and J. Wu, “Joint TCP Congestion Control and CSMA Scheduling without Message Passing,” IEEE Transactions on Wireless Communications, vol. 12, no. 12, pp. 6194-6204, Dec. 2013.
• Z. Fang, X. Wang, and X. Yuan, “Beamforming Design for Multiuser Two-Way Relaying: A Unified Approach via Max-Min SINR,” IEEE Transactions on Signal Processing, vol. 61, no. 23, pp. 5841-5852, Dec. 2013.
• W. Ni, R. Liu, X. Wang, and I. Collings, “Indoor Cooperative Small Cells over Ethernet,” IEEE Communications Magazine, vol. 51, no. 9, pp. 100-107, Sept. 2013.
• X. Wang and Z. Li, “Energy-Efficient Transmissions of Bursty Data Packets with Strict Deadlines over Time-Varying Wireless Channels,” IEEE Transactions on Wireless Communications, vol. 12, no. 5, pp. 2533 – 2543, May 2013.
• Z. Li and X. Wang, “Utility Maximization over Ergodic Capacity Region of Fading OFDMA Channels,” IEEE Transactions on Wireless Communications, vol. 11, no. 7, pp. 2478-2485, July 2012.
• D. Wang, Z. Li, and X. Wang, “Joint Optimal Subcarrier and Power Allocation for Wireless Cooperative Networks Over OFDM Fading Channels,” IEEE Transactions on Vehicular Technology, vol. 61, no. 1, pp. 249-257, Jan. 2012.
• X. Wang and G. B. Giannakis, “Resource Allocation for Wireless Multiuser OFDM Networks,” IEEE Transactions on Information Theory, vol. 57, no. 7, pp. 4359-4372, July 2011.
• N. Gao and X. Wang, “Optimal Subcarrier-Chunk Scheduling for Wireless OFDMA Systems,” IEEE Transactions on Wireless Communications, vol. 10, no. 7, pp. 2116-2123, July 2011.
• X. Wang, “Joint Sensing-Channel Selection and Power Control for Cognitive Radios,” IEEE Transactions on Wireless Communications, vol. 10, no. 3, pp. 958-967, Mar. 2011.
• D. Wang, X. Wang, and X. Cai, “Optimal Power Control for Multi-User Relay Networks over Fading Channels,” IEEE Transactions on Wireless Communications, vol. 10, no. 1, pp. 199-207, Jan. 2011.
• X. Wang, D. Wang, H. Zhuang, and S. Morgera, “Fair Energy-Efficient Resource Allocation in Wireless Sensor Networks over Fading TDMA Channels,” IEEE Journal on Selected Areas in Communications, vol. 28, no. 7, pp. 1063-1072, Sept. 2010.
• X. Wang and N. Gao, “Stochastic Resource Allocation over Fading Multiple Access and Broadcast Channels,” IEEE Transactions on Information Theory, vol. 56, no. 5, pp. 2382-2391, May 2010.
• X. Wang, I. Li, D. Wang, H. Zhuang, and S. Morgera, “Incorporating Retransmission in Quality-of-Service Guaranteed Multiuser Scheduling over Wireless Links,” IEEE Transactions on Vehicular Technology, vol. 58, no. 8, pp. 4388-4397, Oct. 2009.
• A. G. Marques, X. Wang, and G. B. Giannakis, “Dynamic Resource Management for Cognitive Radios using Limited-Rate Feedback,” IEEE Transactions on Signal Processing, vol. 57, no. 9, pp. 3651-3666, Sept. 2009.
• X. Wang, A. G. Marques, and G. B. Giannakis, “Power-Efficient Resource Allocation and Quantization for TDMA Using Adaptive Transmission and Limited-Rate Feedback,” IEEE Transactions on Signal Processing, vol. 56, no. 9, pp. 4470-4485, Sept. 2008.
• A. G. Marques, X. Wang, and G. B. Giannakis, “Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback,” IEEE Transactions on Signal Processing, vol. 56, no. 9, pp. 4446-4457, Sept. 2008.
• X. Wang and G. B. Giannakis, “Power-Efficient Resource Allocation for Time-Division Multiple Access over Fading Channels,” IEEE Transactions on Information Theory, vol. 54, no. 3, pp. 1225-1240, Mar. 2008.
• X. Wang, Y. Yu, and G. B. Giannakis, “Design and Analysis of Cross-Layer Tree Algorithms for Wireless Random Access,” IEEE Transactions on Wireless Communications, vol. 7, no. 3, pp. 909-919, Mar. 2008.
• X. Wang, G. B. Giannakis, and A. Marques, “A Unified Approach to QoS-Guaranteed Scheduling for Channel-Adaptive Wireless Networks,” Proceedings of the IEEE, vol. 95, no. 12, pp. 2410-2431, Dec. 2007. [invited paper]
• X. Wang, Y. Yu and G. B. Giannakis, “A Robust High-Throughput Tree Algorithm Using Successive Interference Cancellation,” IEEE Transactions on Communications, vol. 55, no. 12, pp. 2253-2256, Dec. 2007.
• X. Wang, Q. Liu, and G. B. Giannakis, “Analyzing and Optimizing Adaptive Modulation-Coding Jointly with ARQ for QoS-Guaranteed Traffic,” IEEE Transactions on Vehicular Technology, vol. 56, no. 2, pp. 710-720, Mar. 2007.
• X. Wang and G. B. Giannakis, “CSMA/CCA: A Modified CSMA/CA Protocol Mitigating the Fairness Problem for IEEE 802.11 DCF,” EURASIP Journal on Wireless Communications and Networking, Special Issue on Quality of Service in Mobile Ad Hoc Networks, Article ID 39604, 12 pages, Oct. 2006.
• Q. Liu, X. Wang and G. B. Giannakis, “A Cross-Layer Scheduling Algorithm with QoS Support in Wireless Networks,” IEEE Transactions on Vehicular Technology, vol. 55, no. 3, pp. 839-847, May 2006 (invited paper for special issue on selected papers from QShine 2005).
• X. Wang and J. K. Tugnait, “A Bit-Map-Assisted Dynamic Queue Protocol for Multiaccess Wireless Networks with Multiple Packet Reception,” IEEE Transactions on Signal Processing, vol. 51, pp. 2068-2081, Aug. 2003.
• X. Wang, Z. Wang and B. O'Dea, “A TOA-based Location Algorithm Reducing the Errors Due to Non-Line-of-Sight (NLOS) Propagation,” IEEE Transactions on Vehicular Technology, vol. 52, no. 1, pp. 112-116, Jan. 2003.
• X. Wang and Z. Wang, “The Estimation of the Directions of Arrival of the Spread-Spectrum Signals with Three Orthogonal Sensors,” IEEE Transactions on Vehicular Technology, vol. 51, no. 5, pp. 817-822, Sept. 2002.