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 …

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 …

Written by pioneers of the concept, this is the first complete guide to the physical and
engineering principles of Massive MIMO. Assuming only a basic background in …

Since the first cellular networks were trialled in the 1970s, we have witnessed an incredible
wireless revolution. From 1G to 4G, the massive traffic growth has been managed by a …

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 …

Massive multiple-input multiple-output (MIMO) wireless communications refers to the idea
equipping cellular base stations (BSs) with a very large number of antennas, and has been …

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 …

Recently, the so-called cell-free (CF) massive MIMO architecture has been introduced,
wherein a very large number of distributed access points simultaneously and jointly serve a …

Ubiquitous cell-free massive MIMO (multiple-input multiple-output) combines massive MIMO
technology and user-centric transmission in a distributed architecture. All the access points …

Massive MIMO can greatly increase both spectral and transmit-energy efficiency. This is
achieved by allowing the number of antennas and RF chains to grow very large. However …