Universidade Federal do Ceará
Programa de Pós-Graduação em Engenharia de Teleinformática

O Programa de Pós-Graduação em Engenharia de Teleinformática (PPGETI/UFC) receberá, no próximo dia 21 de julho de 2025, o professor Chengwei Zhou, da Zhejiang University (China), para ministrar o seminário “Sub-Nyquist Tensor Array Signal Processing”, voltado à comunidade acadêmica e com participação aberta.

O evento será realizado presencialmente no Auditório do LESC (DETI, Bloco 723 – Campus do Pici), a partir das 10h. A visita do professor faz parte das ações de internacionalização do Programa e será uma oportunidade para o intercâmbio de conhecimentos em áreas avançadas do processamento de sinais.

Resumo:

With the expanding dimensions of sensor arrays and multi-channel signals, tensor models have found their potential applications in multidimensional array signal processing due to their ability to preserve signal information across each dimension. However, high-dimensional signals are typically sampled at the Nyquist sampling rate, and thus, a massive amount of system storage and computation cost is required for tensor signal processing. In this talk, we incorporate a tensor signal model with the sub-Nyquist sampling paradigm, enabling the efficient processing of sub-Nyquist tensor signals with reduced system cost. In particular, we develop the theory of sub-Nyquist tensor signal processing, where sub-Nyquist tensor signals are derived from a higher-order coarray tensor. The coarray tensor with missing slices can then be completed for Nyquist matching. Based on the formulated theory, both the coarray tensor direction-of-arrival (DOA) estimation and sub-Nyquist tensor beamforming are introduced, and the prospective research trends will also be discussed.

Sobre o professor:

Chengwei Zhou received his Ph.D. degree in Electronic Science and Technology from Zhejiang University, Hangzhou, China, in June 2018. He was a Visiting Researcher at University of Technology Sydney, Sydney, Australia, from April 2017 to October 2017. He served as a Postdoctoral Research Fellow at the State Key Laboratory of Industrial Control Technology, the College of Control Science and Engineering, Zhejiang University, from 2018 to 2020. Since June 2020, he has been affiliated with the College of Information Science and Electronic Engineering at Zhejiang University, where he currently holds the position of Tenure-Track Professor. He is also a member of the State Key Laboratory of Industrial Control Technology and the Key Laboratory of Collaborative Sensing and Autonomous Unmanned Systems of Zhejiang Province. His research interests are in the areas of array signal processing, direction-of-arrival estimation, and adaptive beamforming, with applications to UAV surveillance. Dr. Zhou currently serves as an Associate Editor for the International Journal of Communication Systems and Franklin Open, and as an Editorial Board Member of the Journal of Signal Processing (in Chinese). He was also a Committee Member for several IEEE international conferences, including the 11th IEEE Sensor Array and Multichannel Signal Processing Workshop (IEEE SAM 2020) and the 13th IEEE/CIC International Conference on Communications in China (IEEE/CIC ICCC 2024), and serves as a Co-Chair for the Special Session “Exploiting Diversities in Advanced Array Systems: New Applications and Trends” in the 49th IEEE International Conference on Acoustics, Speech, and Signal Processing (IEEE ICASSP 2024). He was the recipient of the 2021 IEEE Signal Processing Society Young Author Best Paper Award, IEEE ICASSP 2023 Top 3% Paper Recognition, 2019 IET Communications Premium Award, and IEICE ISAP 2020 Best Paper Award.