Education
Experience
I am currently a postdoctoral fellow at the School of Engineering, The University of British Columbia, Kelowna, BC, Canada, where I am working with Prof. Anas Chaaban and Prof. Md. Jahangir Hossain. Previously, I earned my Ph.D. in the Electrical and Computer Engineering Program at the Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, KSA, under the supervision of Prof. Tareq Al-Naffouri. Prior to that, I received the B.S. and M.S. degrees from the Harbin Institute of Technology (HIT), China. My research interests lie in signal processing and estimation theory, with a primary focus on their applications in wireless communications and radio localization.
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Research Highlights
Electromagnetically Reconfigurable Fluid Antenna System for Wireless Communications: Design, Modeling, Algorithm, Fabrication, and Experiment
Ruiqi Wang, Pinjun Zheng†, Vijith Varma Kotte, Sakandar Rauf, Yiming Yang, Muhammad Mahboob Ur Rahman, Tareq Y. Al-Naffouri, Atif Shamim
IEEE Journal on Selected Areas in Communications
Journal
This paper presents the concept, design, channel modeling, beamforming algorithm, prototype fabrication, and experimental measurement of an electromagnetically reconfigurable fluid antenna system (ER-FAS), in which each FAS array element features electromagnetic (EM) reconfigurability. Unlike most existing FAS works that investigate spatial reconfigurability, the proposed ER-FAS enables direct control over the EM characteristics of each element, allowing for dynamic radiation pattern reconfigurability.
Electromagnetically Reconfigurable Fluid Antenna System for Wireless Communications: Design, Modeling, Algorithm, Fabrication, and Experiment
Ruiqi Wang, Pinjun Zheng†, Vijith Varma Kotte, Sakandar Rauf, Yiming Yang, Muhammad Mahboob Ur Rahman, Tareq Y. Al-Naffouri, Atif Shamim
IEEE Journal on Selected Areas in Communications Journal
This paper presents the concept, design, channel modeling, beamforming algorithm, prototype fabrication, and experimental measurement of an electromagnetically reconfigurable fluid antenna system (ER-FAS), in which each FAS array element features electromagnetic (EM) reconfigurability. Unlike most existing FAS works that investigate spatial reconfigurability, the proposed ER-FAS enables direct control over the EM characteristics of each element, allowing for dynamic radiation pattern reconfigurability.
Mutual Coupling-Aware Channel Estimation and Beamforming for RIS-Assisted Communications
Pinjun Zheng*, Simon Tarboush*, Hadi Sarieddeen, Tareq Y. Al-Naffouri
IEEE Transactions on Wireless Communications
Journal
Our previous studies have already proved that mutual coupling is critical in densely integrated arrays in applications such as holographic communications. Neglecting this effect in such applications can lead to severe model mismatches and performance degradation. This paper is the first to comprehensively address the challenges of mutual coupling-aware channel estimation and beamforming in RIS-aided communications, proposing a set of algorithms that outperform existing benchmarks.
Mutual Coupling-Aware Channel Estimation and Beamforming for RIS-Assisted Communications
Pinjun Zheng*, Simon Tarboush*, Hadi Sarieddeen, Tareq Y. Al-Naffouri
IEEE Transactions on Wireless Communications Journal
Our previous studies have already proved that mutual coupling is critical in densely integrated arrays in applications such as holographic communications. Neglecting this effect in such applications can lead to severe model mismatches and performance degradation. This paper is the first to comprehensively address the challenges of mutual coupling-aware channel estimation and beamforming in RIS-aided communications, proposing a set of algorithms that outperform existing benchmarks.
Mutual Coupling in RIS-Aided Communication: Model Training and Experimental Validation
Pinjun Zheng, Ruiqi Wang†, Atif Shamim, Tareq Y. Al-Naffouri
IEEE Transactions on Wireless Communications
Journal
We show how to correctly model the RIS mutual coupling within the cascaded channel and how to obtain a realistic evaluation of the scattering parameters in the model based on a real RIS prototype. Both full-wave simulation and experimental validation are conducted.
Mutual Coupling in RIS-Aided Communication: Model Training and Experimental Validation
Pinjun Zheng, Ruiqi Wang†, Atif Shamim, Tareq Y. Al-Naffouri
IEEE Transactions on Wireless Communications Journal
We show how to correctly model the RIS mutual coupling within the cascaded channel and how to obtain a realistic evaluation of the scattering parameters in the model based on a real RIS prototype. Both full-wave simulation and experimental validation are conducted.