Extremely large-scale multiple-input-multiple-output (XL-MIMO), which offers vast spatial
degrees of freedom, has emerged as a potentially pivotal enabling technology for the sixth …

Extremely large-scale multiple-input multiple-output (XL-MIMO) is a promising technology for
the sixth-generation (6G) mobile communication networks. By significantly boosting the …

A near-field secure transmission framework is proposed. Employing the hybrid beamforming
architecture, a multi-antenna base station (BS) transmits confidential information to a multi …

Multiple-antenna technologies are evolving towards large-scale aperture sizes, extremely
high frequencies, and innovative antenna types. This evolution is giving rise to the …

True-time delayers (TTDs) are popular components for hybrid beamforming architectures to
combat the spatial-wideband effect in wideband near-field communications. In this paper, a …

Multiple-antenna technologies are advancing towards large-scale aperture sizes and
extremely high frequencies, leading to the emergence of near-field communications (NFC) …

To accommodate new applications such as extended reality, fully autonomous vehicular
networks and the metaverse, next generation wireless networks are going to be subject to …

In this paper, we develop an effective degrees of freedom (EDoF) performance analysis
framework specifically tailored for near-field XL-MIMO systems. We explore five …

The capacity limits of continuous-aperture array (CAPA)-based wireless communications are
characterized. To this end, an analytically tractable transmission framework is established …

The channel capacity of near-field (NF) communications is characterized by considering
three types of multiuser channels: i) multiple access channel (MAC), ii) broadcast channel …