Joint power allocation and load balancing optimization for energy-efficient cell-free massive MIMO networks

T Van Chien, E Björnson… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Large-scale distributed antenna systems with many access points (APs) that serve the users
by coherent joint transmission is being considered for 5G-and-beyond networks. The …

Performance analysis of massive MIMO for cell-boundary users

YG Lim, CB Chae, G Caire - IEEE Transactions on Wireless …, 2015 - ieeexplore.ieee.org
In this paper, we consider massive multiple-input-multiple-output systems for both downlink
and uplink scenarios, where three radio units connected via one digital unit support multiple …

Network massive MIMO for cell-boundary users: From a precoding normalization perspective

C Lee, CB Chae, T Kim, S Choi… - 2012 IEEE Globecom …, 2012 - ieeexplore.ieee.org
In this paper, we propose network massive multiple-input multiple-output (MIMO) systems,
where three radio units (RUs) connected via one digital unit (DU) support multiple user …

Graph coloring based pilot assignment for cell-free massive MIMO systems

H Liu, J Zhang, S Jin, B Ai - IEEE Transactions on Vehicular …, 2020 - ieeexplore.ieee.org
An efficient pilot assignment scheme based on graph coloring is proposed to mitigate the
severe pilot contamination effect in cell-free massive multiple-input multiple-output systems …

Centralized and distributed power allocation for max-min fairness in cell-free massive MIMO

S Chakraborty, E Björnson… - 2019 53rd asilomar …, 2019 - ieeexplore.ieee.org
Cell-free Massive MIMO systems consist of a large number of geographically distributed
access points (APs) that serve users by coherent joint transmission. Downlink power …

Interference-driven antenna selection for massive multiuser MIMO

PV Amadori, C Masouros - IEEE Transactions on Vehicular …, 2015 - ieeexplore.ieee.org
Low-complexity linear precoders are known to be close to optimal for massive multiple-input
multiple-output (M-MIMO) systems. However, the large number of antennas at the transmitter …

Downlink power optimization for cell-free massive MIMO over spatially correlated Rayleigh fading channels

J Qiu, K Xu, X Xia, Z Shen, W Xie - IEEE Access, 2020 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (mMIMO) is regarded as a promising
technology in the future wireless communication. This paper aims to minimize the downlink …

Two-side coalitional matching approach for joint MIMO-NOMA clustering and BS selection in multi-cell MIMO-NOMA systems

J Ding, J Cai - IEEE Transactions on Wireless Communications, 2019 - ieeexplore.ieee.org
Resource management in multi-cell multiple-input multiple-output non-orthogonal multiple
access (MIMO-NOMA) is challenged by computational complexity, flexible clustering, and …

Non-orthogonal multiple access in large-scale heterogeneous networks

Y Liu, Z Qin, M Elkashlan… - IEEE Journal on …, 2017 - ieeexplore.ieee.org
In this paper, the potential benefits of applying non-orthogonal multiple access (NOMA)
technique in K-tier hybrid heterogeneous networks (HetNets) is explored. A promising new …

On the total energy efficiency of cell-free massive MIMO

HQ Ngo, LN Tran, TQ Duong… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
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 …