5G will have to support a multitude of new applications with a wide variety of requirements,
including higher peak and user data rates, reduced latency, enhanced indoor coverage …

In this paper, we present a vision beyond the conventional Long Term Evolution Fourth
Generation (LTE-4G) evolution path and suggest that time division duplexing (TDD) could …

Recently, the so-called cell-free (CF) massive multiple-input multiple-output (MIMO)
architecture has been introduced, wherein a very large number of distributed access points …

Massive MIMO is widely recognized as an essential technology for 5G. Together with newly
allocated spectrum (bandwidth) and network densification (small cells), it is expected to play …

Imagine a coverage area with many wireless access points that cooperate to jointly serve
the users, instead of creating autonomous cells. Such a cell-free network operation can …

Cell-free Massive MIMO is considered as a promising technology for satisfying the
increasing number of users and high rate expectations in beyond-5G networks. The key idea …

Massive MIMO is a promising technique for increasing the spectral efficiency (SE) of cellular
networks, by deploying antenna arrays with hundreds or thousands of active elements at the …

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 MIMO (multiple-input multiple-output) is a promising distributed network
architecture for 5G-and-beyond systems. It guarantees ubiquitous coverage at high spectral …

Two key traits of 5G cellular networks are much higher base station (BS) densities-especially
in the case of low-power BSs-and the use of massive MIMO at these BSs. This paper …