User-centric cell-free massive MIMO networks: A survey of opportunities, challenges and solutions
HA Ammar, R Adve, S Shahbazpanahi… - … Surveys & Tutorials, 2021 - ieeexplore.ieee.org
Densification of network base stations is indispensable to achieve the stringent Quality of
Service (QoS) requirements of future mobile networks. However, with a dense deployment of …
Service (QoS) requirements of future mobile networks. However, with a dense deployment of …
Reconfigurable intelligent surfaces for energy efficiency in wireless communication
The adoption of a reconfigurable intelligent surface (RIS) for downlink multi-user
communication from a multi-antenna base station is investigated in this paper. We develop …
communication from a multi-antenna base station is investigated in this paper. We develop …
On the total energy efficiency of cell-free massive MIMO
We consider the cell-free massive multiple-input multiple-output (MIMO) downlink, where a
very large number of distributed multiple-antenna access points (APs) serve many single …
very large number of distributed multiple-antenna access points (APs) serve many single …
Energy efficiency in cell-free massive MIMO with zero-forcing precoding design
We consider the downlink of a cell-free massive multiple-input multiple-output (MIMO)
network, where numerous distributed access points (APs) serve a smaller number of users …
network, where numerous distributed access points (APs) serve a smaller number of users …
Spectral efficiency analysis of cell-free massive MIMO systems with zero-forcing detector
In this paper, we firstly derive two approximations of the achievable uplink rate with the
perfect/imperfect channel state information (CSI) in cell-free massive multi-input multi-output …
perfect/imperfect channel state information (CSI) in cell-free massive multi-input multi-output …
Optimal resource allocation in energy-efficient Internet-of-Things networks with imperfect CSI
Internet of Things (IoT) is an emerging networking paradigm that enhances smart device
communications through Internet-enabled systems. Due to massive IoT devices connectivity …
communications through Internet-enabled systems. Due to massive IoT devices connectivity …
Efficient beamspace-based algorithm for two-dimensional DOA estimation of incoherently distributed sources in massive MIMO systems
In massive multiple-input multiple-output (MIMO) systems, accurate direction-of-arrival
(DOA) estimation is critical for the transmitters to conduct downlink precoding. In this paper …
(DOA) estimation is critical for the transmitters to conduct downlink precoding. In this paper …
Cell-free massive MIMO: Joint maximum-ratio and zero-forcing precoder with power control
Cell-free massive multiple-input multiple-output (MIMO) system is a promising architecture
for next generation wireless systems by deploying a very large number of distributed access …
for next generation wireless systems by deploying a very large number of distributed access …
Energy-efficiency-oriented joint user association and power allocation in distributed massive MIMO systems
This paper investigates the energy efficient downlink transmission in distributed massive
multiple-input-multiple-output systems, where massive antennas are clustered on …
multiple-input-multiple-output systems, where massive antennas are clustered on …
Optimization of the energy-efficient relay-based massive IoT network
To meet the requirements of high energy efficiency (EE) and large system capacity for the
fifth-generation Internet of Things (IoT), the use of massive multiple-input multiple-output …
fifth-generation Internet of Things (IoT), the use of massive multiple-input multiple-output …