We study the secret key rate (SKR) of a multiple-input multiple-output (MIMO) continuous
variable quantum key distribution (CVQKD) system operating at terahertz (THz) frequencies …

This paper analyzes the performance of an uplink/downlink reconfigurable intelligent
surface (RIS)-based wireless system with a multiple-antenna base station (B), where the RIS …

We present an analysis of the optimal SNR of a SIMO Reconfigurable Intelligent Surface
(RIS)-aided wireless link. We assume that the channel between base station (BS) and RIS is …

Intelligent Reflecting Surface (IRS) is a promising technology for enhancing the coverage of
millimeter wave (mmWave) based future wireless communication systems. Severe path loss …

This letter considers the incorporation of secure directional modulation in reconfigurable
intelligent surface (RIS)-aided communication networks. With elaborately selected antenna …

A Reconfigurable Intelligent Surface (RIS) is a passive system node, envisioned as a new
physical layer technology in sixth-generation (6G) infrastructure. A RIS enables smart …

By enabling reconfigurable intelligent surfaces (RIS), we can deploy intelligent reflecting
signals from the base station to destinations. Different from traditional relaying system, RIS …

We analyze the potential of using reconfigurable intelligent surfaces (RISs) as an alternative
to classical active beamforming to encounter the effects of non-ideal hardware components …

Reconfigurable Intelligent Surface (RIS) stands out for its unique low-cost and low-energy
characteristics, which is expected to break through the uncontrollability of wireless channels …

This thesis presents novel signal processing techniques and performance analysis of
futurecommunication technologies for the upcoming beyond 5G (B5G) and sixth-generation …