A review of energy efficiency and power control schemes in ultra-dense cell-free massive MIMO systems for sustainable 6G wireless communication
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 …
Spectral Efficiency (SE), Energy Efficiency (EE), and link reliability, which are critical to …
Foundations of user-centric cell-free massive MIMO
ÖT Demir, E Björnson… - Foundations and Trends …, 2021 - nowpublishers.com
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 …
wireless access points (among many) that are selected based on its needs and cooperate to …
Learning-based downlink power allocation in cell-free massive MIMO systems
This paper considers a cell-free massive multiple-input multiple-output (MIMO) system that
consists of a large number of geographically distributed access points (APs) serving multiple …
consists of a large number of geographically distributed access points (APs) serving multiple …
Generalized superimposed training scheme in IRS-assisted cell-free massive MIMO systems
In this article, for a cell-free massive multi-input multi-output (MIMO) system assisted with
intelligent reflective surface (IRS) panels, a generalized superimposed pilot (GSP) training …
intelligent reflective surface (IRS) panels, a generalized superimposed pilot (GSP) training …
Next-Generation Multiple Access With Cell-Free Massive MIMO
To meet the unprecedented mobile traffic demands of future wireless networks, a paradigm
shift from conventional cellular networks to distributed communication systems is imperative …
shift from conventional cellular networks to distributed communication systems is imperative …
Joint cooperative clustering and power control for energy-efficient cell-free XL-MIMO with multi-agent reinforcement learning
In this paper, we investigate the amalgamation of cell-free (CF) and extremely large-scale
multiple-input multiple-output (XL-MIMO) technologies, referred to as a CF XL-MIMO, as a …
multiple-input multiple-output (XL-MIMO) technologies, referred to as a CF XL-MIMO, as a …
Double-layer power control for mobile cell-free XL-MIMO with multi-agent reinforcement learning
Cell-free (CF) extremely large-scale multiple-input multiple-output (XL-MIMO) is regarded as
a promising technology for enabling future wireless communication systems. Significant …
a promising technology for enabling future wireless communication systems. Significant …
Soft handover procedures in mmWave cell-free massive MIMO networks
This paper considers a mmWave cell-free massive MIMO (multiple-input multiple-output)
network composed of a large number of geographically distributed access points (APs) …
network composed of a large number of geographically distributed access points (APs) …
Joint user association and power control for cell-free massive MIMO
This work proposes novel approaches that jointly design user equipment (UE) association
and power control (PC) in a downlink user-centric CELL-FREE massive multiple-input …
and power control (PC) in a downlink user-centric CELL-FREE massive multiple-input …
On the energy efficiency of cell-free systems with limited fronthauls: Is coherent transmission always the best alternative?
Existing works concluded that coherent transmission outperforms non-coherent transmission
in the downlink of cell-free systems when the fronthaul links have unlimited capacity. Since …
in the downlink of cell-free systems when the fronthaul links have unlimited capacity. Since …