Extremely large-scale antenna arrays, tremendously high frequencies, and new types of
antennas are three clear trends in multi-antenna technology for supporting the sixth …

What will the future of UAV cellular communications be? In this tutorial article, we address
such a compelling yet difficult question by embarking on a journey from 5G to 6G and …

Mobile communications have been undergoing a generational change every ten years or
so. However, the time difference between the so-called “G's” is also decreasing. While fifth …

Densification of network base stations is indispensable to achieve the stringent Quality of
Service (QoS) requirements of future mobile networks. However, with a dense deployment of …

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 …

Recently there has been a flurry of research on the use of reconfigurable intelligent surfaces
(RIS) in wireless networks to create smart radio environments. In a smart radio environment …

Multiple antenna technologies have attracted much research interest for several decades
and have gradually made their way into mainstream communication systems. Two main …

Massive MIMO (multiple-input multiple-output) is no longer a “wild” or “promising” concept
for future cellular networks—in 2018 it became a reality. Base stations (BSs) with 64 fully …

Imagine a MIMO communication system that fully exploits the propagation characteristics
offered by an electromagnetic channel and ultimately approaches the limits imposed by …

This paper studies the transmit beamforming in a downlink integrated sensing and
communication (ISAC) system, where a base station (BS) equipped with a uniform linear …