Cell-free Massive multiple-input multiple-output (MIMO) comprises a large number of
distributed low-cost low-power single antenna access points (APs) connected to a network …

In practical mobile communication engineering applications, surfaces of antenna array
deployment regions are usually uneven. Therefore, massive multi-input-multi-output (MIMO) …

Channel measurements show that significant spatially non-wide-sense-stationary
characteristics rise in massive MIMO channels. Notable parameter variations are …

We study the performance of uplink transmission in single-cell wireless systems, where all
the transmitters have single antennas and the base station has a large number of antennas …

Massive multiple-input multiple-output (MIMO) is a key technology in 5G. It enables multiple
users to be served in the same time-frequency block through precoding or beamforming …

Improved Spectral Efficiency (SE) is a prominent feature of Massive Multiple-Input and
Multiple-Output systems. These systems are prepared with antenna clusters at receiver (R x) …

We characterize a two tier heterogeneous network, consisting of classical sub-6 GHz macro
cells, and multi radio access technology (RAT) small cells able to operate in sub-6 GHz and …

Massive MIMO techniques are expected to deliver significant performance gains for the
future wireless communication networks by improving the spectral and the energy …

Massive MIMO is a promising technique to increase the spectral efficiency of cellular
networks, by deploying antenna arrays with hundreds or thousands of active elements at the …

In a cell-free massive MIMO architecture a very large number of distributed access points
simultaneously and jointly serves a much smaller number of mobile stations; a variant of the …