This article focuses on advancing outdoor wireless systems to better support ubiquitous
extended reality (XR) applications, and close the gap with current indoor wireless …

Cell-free massive MIMO (CF-mMIMO) systems represent a promising approach to increase
the spectral efficiency of wireless communication systems. However, near-optimal …

Hybrid beamforming is a promising technique to reduce the complexity and cost of massive
multiple-input multiple-output (MIMO) systems while providing high data rate. However, the …

Extremely large-scale massive multiple-input-multiple-output (XL-MIMO) is regarded as a
promising technology for next-generation communication systems. In order to enhance the …

In massive multiple-input multiple-output (MIMO) systems, hybrid analog-digital
beamforming is an essential technique for exploiting the potential array gain without using a …

In an aerial hybrid massive multiple-input multiple-output (MIMO) and orthogonal frequency
division multiplexing (OFDM) system, how to design a spectral-efficient broadband multi …

Machine learning for hybrid beamforming has been extensively studied by using centralized
machine learning (CML) techniques, which require the training of a global model with a …

Beamspace multiple-input-multiple-output (MIMO) as a green technology can efficiently
substitute for the conventional massive MIMO, provided that the beamspace channel is …

Hybrid beamforming is a promising technology to improve the energy efficiency of massive
MIMO systems. In particular, subarray hybrid beamforming can further decrease power …

Cell-free massive MIMO precoding leverages the large number of antennas and dense
access point (AP) deployment to concurrently serve multiple users in a wide coverage area …