Massive multiple-input multiple-output (MIMO) is believed to deliver unrepresented spectral
efficiency gains for 5G and beyond. However, a practical challenge arises during its …

In cell-free (CF) massive multiple-input multiple-output (mMIMO) architecture, large number
of access points (APs) collaboratively serve much smaller number of users. Conventionally …

Massive multiple-input multiple-output (MIMO) is regarded as one enabling technique to
improve channel capacity and energy/spectrum efficiency of 5G communications. To attain …

The need for channel state information (CSIT) is crucial for the improved spectral efficiency
of massive multiple-input multiple-output (MIMO) systems. In FDD massive MIMO systems …

In this correspondence paper, we consider a cell-free massive Multiple-Input Multiple-Output
(MIMO) system where access points (APs) serve a much smaller number of users under the …

Cell-free massive multiple-input multiple-output (MIMO) is considered as a promising
technology for providing uniformly good services in future networks. The aim of this paper is …

This paper investigates the combined benefits of full-duplex (FD) and cell-free massive
multiple-input multiple-output (CF-mMIMO), where a large number of distributed access …

In frequency-division duplexing (FDD) massive multiple-input-multiple-output (MIMO)
systems, channel estimation about reducing the training and feedback overhead has always …

Accurate downlink channel state information (CSI) is required to be fed back to the base
station (BS) in frequency division duplexing (FDD) massive multiple-input multiple-output …

Exploiting channel reciprocity, time-division-duplexing (TDD) operated massive multiple-
input multiple-output (MIMO) systems are able to acquire the channel state information with …