Downlink coherent multiuser transmission is an essential technique for cell-free massive
multiple-input multiple-output (MIMO) systems, and the availability of channel state …

Cell-free massive multiple-input multiple-output (MIMO) is an attractive network in 6G
communications that significantly increases the spectral efficiency. Operating in time-division …

Massive multiple-input multiple-output (MIMO) is a promising technique to greatly increase
the spectral efficiency and may be adopted by the next generation mobile communication …

In this paper, we propose a novel design of calibration matrix for time-division duplex
multiuser multiple-input multiple-output with maximal ratio transmit beamforming, which …

Radio frequency (RF) channel reciprocity calibration is one of the most important
technologies in massive multiple-input multiple-output (MIMO) system. With the increasing of …

We propose a generation scheme for a sounding reference signal (SRS) suitable for
supporting a large number of users in massive multi-input multi-output (MIMO) system with a …

Massive multi-input multioutput (MIMO) is believed to be an effective technique for future
terrestrial broadcasting systems. Reciprocity calibration is one of the major practical …

Multiple remote antenna units (RAUs) cooperate to serve a certain user in cell-free
distributed massive multiple-input multiple-output (MIMO) systems. Due to the different …

This paper presents a mutual coupling-based calibration method for time-division-duplex
massive MIMO systems, which enables downlink precoding based on uplink channel …

In this paper we consider time-division-duplex (TDD) reciprocity calibration of a massive
MIMO system. The calibration of a massive MIMO system can be done entirely at the base …