Pilot precoding and combining in multiuser MIMO networks

NN Moghadam, H Shokri-Ghadikolaei… - IEEE Journal on …, 2017 - ieeexplore.ieee.org
Although the benefits of precoding and combining data signals are widely recognized, the
potential of these techniques for pilot transmission is not fully understood. This is particularly …

Multiplexing efficiency of MIMO antennas in arbitrary propagation scenarios

R Tian, BK Lau, Z Ying - 2012 6th European conference on …, 2012 - ieeexplore.ieee.org
Multiplexing efficiency has recently been proposed as a performance metric for
characterizing the absolute efficiency of MIMO antennas in a reference channel. In this work …

Evaluation of EMF Exposure From Distributed MIMO Antennas for 6G in an Industrial Indoor Environment

SS Zhekov, B Xu - IEEE Transactions on Electromagnetic …, 2024 - ieeexplore.ieee.org
Distributed multi-input multioutput (D-MIMO) is one of the promising technology components
for the 6G mobile communication systems. In this article, electromagnetic field (EMF) …

Multiplexing efficiency of MIMO antennas with user effects

R Tian, BK Lau, Z Ying - Proceedings of the 2012 IEEE …, 2012 - ieeexplore.ieee.org
Recently, the multiplexing efficiency metric is proposed for characterizing the MIMO
performance of terminal antennas. Here, we show that it can also provide useful insights into …

On antenna design objectives and the channel capacity of MIMO handsets

JØ Nielsen, B Yanakiev, SC Del Barrio… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
The branch correlation coefficient (BCC), the branch power ratio (BPR), and the total mean
power (TMP) are often used to characterize the mobile multiple-input multiple-output (MIMO) …

Efficiency of millimeter wave mobile terminal antennas with the influence of users

R Khan, AA Al-Hadi, PJ Soh - Progress In Electromagnetics Research, 2018 - jpier.org
The effect of users on the efficiency of mobile terminal antennas at 15 GHz, 28 GHz and 60
GHz is studied in this paper. It is performed using three four-element planar arrays. The first …

Energy-aware and rate-aware heuristic beamforming in downlink MIMO OFDMA networks with base-station coordination

L Venturino, S Buzzi - IEEE Transactions on Vehicular …, 2014 - ieeexplore.ieee.org
This paper addresses the problem of coordinated beamforming across a group of base
stations (BSs) and frequency slots in the downlink of a multiple-input multiple-output (MIMO) …

User equipment beamforming for massive MIMO based stratospheric communications

Q Xi, Z Lian, C He, L Jiang, Q Shi… - GLOBECOM 2017-2017 …, 2017 - ieeexplore.ieee.org
A User Equipment (UE) beamforming method is proposed for massive MIMO based
stratospheric communications with multiple High Altitude Platforms (HAPs). The method …

User equipment beamforming optimization for multi-cell massive MIMO systems

Q Xi, Q Shi, C He, L Jiang - IEEE Wireless Communications …, 2017 - ieeexplore.ieee.org
A user equipment (UE) beamforming method is proposed in this letter for massive MIMO
systems with multi-antenna UEs. The method requires no additional channel information …

Interference mitigation with dual antenna users in massive mimo systems

X Shao, L Jiang, C He, Q Xi - 2016 IEEE 83rd Vehicular …, 2016 - ieeexplore.ieee.org
In massive multiple-input multiple-output (MIMO) systems, the effect of small-scale fading
and noise disappear when the number of base station antennas goes to infinity. The only …