Reconfigurable intelligent surfaces (RISs) can establish favorable wireless environments to
combat the severe attenuation and blockages in millimeter-wave (mmWave) bands …

Hybrid precoding (HP) is widely utilized in millimeter wave-based massive MIMO systems
with significantly reduced radio frequency (RF) chains, but it requires a large number of …

Dynamic subarray achieves a compromise between the sum rate and hardware complexity
of millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems, in …

This article studies a reconfigurable intelligent surface (RIS)-aided cell-free massive multiple-
input multiple-output system and formulate the max–min fairness problem that maximizes …

Massive multiple-input multiple-output (MIMO) has the potential to substantially improve the
spectral efficiency, robustness and coverage of mobile networks. However, such potential is …

In this paper, we consider and study a cell-free massive MIMO (CF-mMIMO) system aided
with reconfigurable intelligent surfaces (RISs), where a large number of access points (APs) …

Hybrid analog-digital precoding is challenging for broadband millimeter-wave (mmWave)
massive MIMO systems, since the analog precoder is frequency-flat but the mmWave …

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 millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems,
hybrid processing architecture is essential to significantly reduce the complexity and cost but …

Beamspace multiple-input-multiple-output (MIMO) as a green technology can efficiently
substitute for the conventional massive MIMO, provided that the beamspace channel is …