Dr. Zilong Liu

A fundamental research problem in ISAC is how to design optimal/good waveforms for efficient enabling of both sensing and communications. In the first part of this talk, I will introduce a novel multicarrier ISAC waveform having low peak-to-average power ratio property. We consider a flexible and generic ISAC structure in which a number of non-contiguous sub-bands for data transmission are located in a large contiguous spectrum band. Optimization is carried out for those non-communication subcarriers with the aid of the majorization-minimization method.

In the second part, I will introduce several families of sensing sequences for low-complexity delay-Doppler estimation in ISAC systems. Fundamental limits and systematic constructions of these sequences will be presented.

Biography:

Dr. Zilong Liu is an Associate Professor at the University of Essex, UK, within the School of Computer Science and Electronic Engineering. He earned his PhD in 2014 from Nanyang Technological University, Singapore, where he focused on complementary sequences for wireless communications, solving several longstanding problems. He also spent time as a Visiting PhD student at Hong Kong University of Science and Technology and the University of Melbourne. Before joining Essex, Dr. Liu was a Senior Research Fellow at the University of Surrey’s Institute for Communication Systems, where he contributed to the air-interface design of 5G systems. His research spans coding, signal processing, and communications, aiming to bridge theoretical and practical aspects. He is particularly focused on advanced 6G V2X communication, sensing, localization, and machine learning for autonomous vehicles. Dr. Liu has received funding from prestigious organizations and is a Senior Member of IEEE, serving as an editor for several IEEE journals.