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 …

The mobile data traffic has been exponentially growing during the last several decades. This
was enabled by the densification of the network infrastructure in terms of increased cell …

Imagine a coverage area where each mobile device is communicating with a preferred set of
wireless access points (among many) that are selected based on its needs and cooperate to …

Cell-free massive multiple-input multiple-output (MIMO) provides more uniform spectral
efficiency (SE) for users (UEs) than cellular technology. The main challenge to achieve the …

This paper studies a cell-free massive multiple-input multiple-output (MIMO) system where
its access points (APs) and users are equipped with multiple antennas. Two transmission …

The traditional multiple input multiple output (MIMO) systems cannot provide very high
Spectral Efficiency (SE), Energy Efficiency (EE), and link reliability, which are critical to …

Ultradense cell-free massive multiple-input multiple-output (CF-MMIMO) has emerged as a
promising technology expected to meet the future ubiquitous connectivity requirements and …

Recently, cell-free (CF) architectures, in which every user can potentially communicate with
every base station, have received a lot of attention. This paper considers the uplink of fully …

To cope with the even more urgent spectrum and energy efficiency challenge for trillion-level
terminal access and data uploading in the next generation mobile communication network …

In cell-free massive multiple-input multiple-output (MIMO) the fluctuations of the channel
gain from the access points to a user are large due to the distributed topology of the system …