Considering the design of two-stage beamformers for the downlink of multi-user massive
multiple-input multiple-output systems in frequency division duplexing mode, this paper …

In this paper, we consider the design of two-stage beamformers for the downlink of multi-
user frequency-division-duplexing (FDD) massive multiple-input multiple-output (MIMO) …

The large scale multiple-input multiple-output (MIMO) system with hybrid beamforming
(HBF) is a promising communications technology due to its excellent tradeoff between …

This paper designs a novel hybrid (a mixture of analog and digital) beamforming and
examines the relation between the hybrid and digital beamformings for downlink multiuser …

Statistical beamforming is an important technique for multi-user massive MIMO downlink,
since it depends on the downlink channel covariance only. In this paper, we first derive an …

In this paper, we study the beamforming design problem in frequency-division duplexing
(FDD) downlink massive MIMO systems, where instantaneous channel state information …

This paper studies a variant of hybrid beamforming, namely, hybrid beamforming with
selection (HBwS), as an attractive solution to reduce the hardware cost of multiuser Massive …

In this paper, considering a hybrid architecture at the base station (BS) in an m-MIMO
system, multi-antenna users transmit/receive multiple symbols to/from the BS in the …

The conventional full radio frequency (RF) configuration appears to be unfeasible in
massive multiple-input-multiple-output (MIMO) systems due to the still-exorbitant energy …

Massive multiple-input-multiple-output (MIMO) has become a promising technique to
provide high-data-rate communication in fifth-generation mobile systems, thanks to its ability …