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The CCCN-CityU-PolyU Joint Seminar Series began in 2001, and has since become regular weekly meetings for visitors, faculty, researchers and students to discuss latest progresses in their research.

The next seminar is:

Date & Time: March 27, 2026, Friday, 4:30pm-5:30pm
Title: Sensor Array Signal Processing (SASP): Representative Research Developments and Future Directions

Speaker: Prof. Wei Liu, Hong Kong Polytechnic University

Venue: ONLINE ONLY
Zoom ID 270 294 7238
Password 123456

Abstract:
In this talk, a review of the advances made in the past twenty-five years in sensor array signal processing (SASP) is first presented. As it is not possible to give an exhaustive list for all of them, we will focus on five major topics and introduce the corresponding progresses made in tackling their respective technical challenges: beamforming (including robust adaptive beamforming and frequency invariant beamforming), direction of arrival (DOA) estimation (including sparsity based and underdetermined DOA estimation), sensor location optimization, target/source localization based on sensor arrays, and multiple-input-multiple-output (MIMO) arrays (including MIMO radar and MIMO for wireless communications). The first two are classic SASP topics from the very beginning, while the latter three were only studied systematically in the past decades. Then, six new developments in the SAM area are introduced to give an indication about possible future research directions, including tensor based SASP, quaternion-valued SASP, one-bit and non-coherent SASP, autonomous sensing based on moving arrays, machine learning and artificial intelligence for SASP, and SASP for next-generation communication systems.

Speaker's Bio:
Wei Liu received his BSc and LLB degrees from Peking University, China, in 1996 and 1997, respectively, MPhil from the Department of Electrical and Electronic Engineering, University of Hong Kong in 2001, and PhD from the School of Electronics and Computer Science, University of Southampton, UK, in 2003. He then worked as a postdoc first at Southampton and later at Imperial College London. From 2005 to 2023, he was a Lecturer/Senior Lecturer at the Department of Electronic and Electrical Engineering, University of Sheffield, UK and from 2023 to 2024, a Reader at the School of Electronic Engineering and Computer Science, Queen Mary University of London (Visiting Professor from 2024). Since 2024, he has been a Professor at the Department of Electrical and Electronic Engineering, Hong Kong Polytechnic University. He has published 500+ journal and conference papers, six book chapters, and two research monographs titled "Wideband Beamforming: Concepts and Techniques" (Wiley, 2010) and "Low-Cost Smart Antennas" (Wiley, 2019), respectively. His research interests are mainly focused on sensor array and multichannel signal processing and its various applications, such as robotics and autonomous systems, human computer interface, radar, sonar, and wireless communications. He is a member of the Applied Signal Processing Systems Technical Committee (Chair for 2026-2027) of the IEEE Signal Processing Society (SPS), the Digital Signal Processing Technical Committee (Chair for 2022-2024) of the IEEE Circuits and Systems Society, and the IEEE SPS Education Board (2024-2026, Chair of its Educational Conference Program Committee), and a former member of the Sensor Array and Multichannel Signal Processing Technical Committee of the IEEE SPS (Chair for 2021-2022), the IEEE SPS Technical Directions Board (2021-2022, 2026-2027), and the IEEE SPS Conference Board and its Executive Subcommittee (2022-2023). He also acted as an associate editor for IEEE Trans. on Signal Processing, IEEE Access, and Journal of the Franklin Institute, and an Executive Associate Editor-in-Chief of the journal Frontiers of Information Technology and Electronic Engineering; currently he is an associate editor for IEEE Transactions on Circuits and Systems I: Regular Papers and IEEE Antennas and Wireless Propagation Letters. He is an IEEE Distinguished Lecturer for the Aerospace and Electronic Systems Society (2023-2026).

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The Centre for Complexity and Complex Networks aims to conduct emerging and cutting-edge research in the multidisciplinary area of complex systems and networks, including fundamental theory in dynamical networked systems and cyber physical systems, and applications in

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Through the significant and groundbreaking contributions of its members to the fundamental theory of nonlinear science and applications over the past 20 more years, the centre has established itself as one of the leading research centres in the world focusing on nonlinear science, complexity and complex systems.

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WHAT'S NEWS

Congratulations to Prof. Michael Tse on his being inducted to the Hong Kong Academy of Engineering as its Fellow.

The Hong Kong Academy of Engineering announced on November 26, 2025, the induction of twelve exceptional professionals as Fellows, who were elected at its 32nd annual general meeting on September 8, 2025 and were formally inducted at a ceremony held on November 24, 2025 at HOPEWELL Hotel. The citation for Prof. Tse's election is "For pioneering contributions in power electronics, including ultra-fast-transient voltage regulation, sliding-mode control for converters, robust EV charging, and wireless power transfer."

Congratulations to Prof. Ron Chen on being awarded The Ichtiaroglou Award
The Ichtiaroglou Award recognizes Prof. Chen's lifetime achievement in Nonlinear Systems Theory. The award ceremony will be held at the Second DANOC Days of Applied Nonlinearity and Complexity in January 2026.

Our Centre and The Applied Mathematical Science Research Centre of Jiangsu Province have recently signed an MoU to promote academic research, exchange, and sharing of results and resource, aiming to promote high-quality research and knowledge transfer in areas of complex systems, networks, applied mathematics. This agreement will strengthen the collaborative relationship between the two centres, and foster talent exchange and development between Hong Kong and Jiangsu Province.

Congratulations!

Prof Ron Chen was elected as NetSci Fellow 2025! The NetSci Fellowship recognizes researchers who have made outstanding and significant contributions to network science research and to the community of network scientists. Elected nominees are named Fellows of the Network Science Society. The Fellowship will be awarded each year to up to 7 members of the community on the basis of their exceptional life-long individual contributions to any area of network science research and to the community of network scientists (locally and globally). All members of the community are eligible for nomination and election to the Fellowship. Selection from the pool of nominees will be conducted by the Fellowship Committee, to be appointed by the Network Science Society board and composed of a minimum of 4 prominent researchers active in the area of network science.

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Released October 2024

PLEASE JOIN OUR FRIDAY SEMINARS

Our Mission

Date & Time:	March 27, 2026, Friday, 4:30pm-5:30pm
Title:	Sensor Array Signal Processing (SASP): Representative Research Developments and Future Directions
Speaker:	Prof. Wei Liu, Hong Kong Polytechnic University
Venue:	ONLINE ONLY Zoom ID 270 294 7238 Password 123456
Abstract:	In this talk, a review of the advances made in the past twenty-five years in sensor array signal processing (SASP) is first presented. As it is not possible to give an exhaustive list for all of them, we will focus on five major topics and introduce the corresponding progresses made in tackling their respective technical challenges: beamforming (including robust adaptive beamforming and frequency invariant beamforming), direction of arrival (DOA) estimation (including sparsity based and underdetermined DOA estimation), sensor location optimization, target/source localization based on sensor arrays, and multiple-input-multiple-output (MIMO) arrays (including MIMO radar and MIMO for wireless communications). The first two are classic SASP topics from the very beginning, while the latter three were only studied systematically in the past decades. Then, six new developments in the SAM area are introduced to give an indication about possible future research directions, including tensor based SASP, quaternion-valued SASP, one-bit and non-coherent SASP, autonomous sensing based on moving arrays, machine learning and artificial intelligence for SASP, and SASP for next-generation communication systems.
Speaker's Bio:	Wei Liu received his BSc and LLB degrees from Peking University, China, in 1996 and 1997, respectively, MPhil from the Department of Electrical and Electronic Engineering, University of Hong Kong in 2001, and PhD from the School of Electronics and Computer Science, University of Southampton, UK, in 2003. He then worked as a postdoc first at Southampton and later at Imperial College London. From 2005 to 2023, he was a Lecturer/Senior Lecturer at the Department of Electronic and Electrical Engineering, University of Sheffield, UK and from 2023 to 2024, a Reader at the School of Electronic Engineering and Computer Science, Queen Mary University of London (Visiting Professor from 2024). Since 2024, he has been a Professor at the Department of Electrical and Electronic Engineering, Hong Kong Polytechnic University. He has published 500+ journal and conference papers, six book chapters, and two research monographs titled "Wideband Beamforming: Concepts and Techniques" (Wiley, 2010) and "Low-Cost Smart Antennas" (Wiley, 2019), respectively. His research interests are mainly focused on sensor array and multichannel signal processing and its various applications, such as robotics and autonomous systems, human computer interface, radar, sonar, and wireless communications. He is a member of the Applied Signal Processing Systems Technical Committee (Chair for 2026-2027) of the IEEE Signal Processing Society (SPS), the Digital Signal Processing Technical Committee (Chair for 2022-2024) of the IEEE Circuits and Systems Society, and the IEEE SPS Education Board (2024-2026, Chair of its Educational Conference Program Committee), and a former member of the Sensor Array and Multichannel Signal Processing Technical Committee of the IEEE SPS (Chair for 2021-2022), the IEEE SPS Technical Directions Board (2021-2022, 2026-2027), and the IEEE SPS Conference Board and its Executive Subcommittee (2022-2023). He also acted as an associate editor for IEEE Trans. on Signal Processing, IEEE Access, and Journal of the Franklin Institute, and an Executive Associate Editor-in-Chief of the journal Frontiers of Information Technology and Electronic Engineering; currently he is an associate editor for IEEE Transactions on Circuits and Systems I: Regular Papers and IEEE Antennas and Wireless Propagation Letters. He is an IEEE Distinguished Lecturer for the Aerospace and Electronic Systems Society (2023-2026).