The global bandwidth shortage in the wireless communication sector has motivated the
study and exploration of wireless access technology known as massive Multiple-Input …

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 …

Massive multiple-input multiple-output (MIMO) is one of the most promising technologies for
the next generation of wireless communication networks because it has the potential to …

Massive multiple-input multiple-output (MaMIMO) has become an integral part of the fifth-
generation (5G) standard, and is envisioned to be further developed in beyond 5G (B5G) …

In this paper, we propose a relative channel estimation error (RCEE) metric, and derive
closed-form expressions for its expectation Exprcee and the achievable uplink rate holding …

Unmanned aerial vehicle (UAV) antenna tracking system is an electromechanical
component designed to track and steer the signal beams from the ground control station …

In this paper, we study a new kind of pilot contamination appearing in multi-operator
reconfigurable intelligent surfaces (RIS) assisted networks, where multiple operators provide …

Pilot contamination, defined as the interference during the channel estimation process due
to reusing the same pilot sequences in neighboring cells, can severely degrade the …

Pilot power allocation for Internet of Things (IoT) devices in massive multi‐input multioutput
heterogeneous wireless sensor networks (MIMO‐HWSN) is studied in this paper. The …

The pilot contamination caused by sharing the non-orthogonal pilots among users is
considered to be a bottleneck of the massive multi-input multi-output (MIMO) systems. This …