5 papers
Baseband-Free Wideband MU-MIMO OFDM via Stacked Intelligent Metasurfaces
Zheao Li, Jiancheng An, Chau Yuen
This paper proposes a novel baseband-free wideband MU-MIMO OFDM transmitter architecture enabled by two cascaded stacked intelligent metasurfaces (SIMs). Unlike conventional wirele…
Stacked Intelligent Metasurface-Enhanced Wideband Multiuser MIMO OFDM-IM Communications
Zheao Li, Jiancheng An, Chau Yuen
Stacked intelligent metasurfaces (SIM) enable fine-grained wave-domain signal processing, but their wideband deployment is impeded by two structural factors: (i) a single, quasi-st…
Stacked Intelligent Metasurface-Enhanced MIMO OFDM Wideband Communication Systems
Zheao Li, Jiancheng An, Chau Yuen
Multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems rely on digital or hybrid digital and analog designs for beamforming against frequen…
Fundamental Trade-off in Wideband Stacked Intelligent Metasurface Assisted OFDMA Systems
Zheao Li, Jiancheng An, Chau Yuen
Conventional digital beamforming for wideband multiuser orthogonal frequency-division multiplexing (OFDM) demands numerous power-hungry components, increasing hardware costs and co…
Robust Beamforming Design for STAR-RIS Aided RSMA Network with Hardware Impairments
Ziyue Wang, Xiaoyan Ma, Xingyu Peng +4
In this article, we investigate the robust beamforming design for a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided downlink rate-split…