Wideband precoding for RIS-aided THz communications
Reconfigurable intelligent surface (RIS)-aided terahertz (THz) communication has been
considered as a promising technology for enabling future sixth-generation (6G) wireless …
considered as a promising technology for enabling future sixth-generation (6G) wireless …
Near-field channel estimation for extremely large-scale reconfigurable intelligent surface (XL-RIS)-aided wideband mmwave systems
Near-field communications present new opportunities over near-field channels, however,
the spherical wavefront propagation makes near-field signal processing challenging. In this …
the spherical wavefront propagation makes near-field signal processing challenging. In this …
The far-/near-field beam squint and solutions for THz intelligent reflecting surface communications
Terahertz (THz) and intelligent reflecting surface (IRS) have been regarded as two
promising technologies to improve the capacity and coverage for future 6G networks …
promising technologies to improve the capacity and coverage for future 6G networks …
Multi-user MISO with stacked intelligent metasurfaces: A DRL-based sum-rate optimization approach
Stacked intelligent metasurfaces (SIMs) represent a novel signal processing paradigm that
enables over-the-air processing of electromagnetic waves at the speed of light. Their multi …
enables over-the-air processing of electromagnetic waves at the speed of light. Their multi …
Scalable channel estimation and reflection optimization for reconfigurable intelligent surface-enhanced OFDM systems
This letter proposes a scalable channel estimation and reflection optimization framework for
reconfigurable intelligent surface (RIS)-enhanced orthogonal frequency division …
reconfigurable intelligent surface (RIS)-enhanced orthogonal frequency division …
Time-delay unit based beam squint mitigation for RIS-aided communications
Reconfigurable intelligent surface (RIS) is considered as a critical technology for future
wireless communication networks. In this letter, we show that in a RIS-aided wideband THz …
wireless communication networks. In this letter, we show that in a RIS-aided wideband THz …
Wideband beamforming for Star-RIS-assisted THZ communications with three-side beam split
In this paper, we consider the simultaneously transmitting and reflecting reconfigurable
intelligent surface (STAR-RIS)-assisted THz communications with three-side beam split …
intelligent surface (STAR-RIS)-assisted THz communications with three-side beam split …
Low Complexity RIS Update in OFDM Systems via RIS Element Allocation
In this paper, we propose reconfigurable intelligent surface (RIS) element allocation
algorithms that maximize the minimum rate or sum rate in a multi-user (MU)-multiple-input …
algorithms that maximize the minimum rate or sum rate in a multi-user (MU)-multiple-input …
Resource Optimization in Active-STAR-RIS-Aided THz ISAC Systems with DDA Modulation: A Machine-Learning Approach
This paper explores the state-of-the-art terahertz (THz) integrated sensing and
communication system (ISAC) that uses active reconfigurable intelligent surfaces (ASRIS) …
communication system (ISAC) that uses active reconfigurable intelligent surfaces (ASRIS) …
Beyond Diagonal Reconfigurable Intelligent Surfaces in Wideband OFDM Communications: Circuit-Based Modeling and Optimization
This work investigates the modeling and optimization of beyond diagonal reconfigurable
intelligent surface (BD-RIS), which generalizes conventional RIS with diagonal phase shift …
intelligent surface (BD-RIS), which generalizes conventional RIS with diagonal phase shift …