… a joint channel training and feedback scheme for FDD massive MIMO systems. Specifically,
… of time-varying channels to propose a differential channel training and feedback scheme, …

… The main contributions of this paper include: • The low-rank covariance matrices of the
channels are exploited to design efficient channel training and feedback schemes, which enable …

… novel channel estimation scheme for FDD massive MIMO systems, which combines LS and
CS techniques. A key observation for the proposed scheme is that even though the channel …

… , FDD dominates current wireless cellular systems. Thus, we focus on a downlink training
framework for FDD massive MIMO systems in … training signals for open-loop/single-shot training …

… 2) We propose a SCNet for downlink CSI prediction in FDD massive MIMO systems, which
is applicable to complex-valued function approximation with complexvalued representations. …

… In this article, we formulate the downlink channel prediction for FDD massive MIMO systems
as a DTL problem, where each learning task aims to predict the downlink CSI from the …

… (cell-free) massive MIMO systems and for both TDD and FDD system operation modes, as
we will discuss in Section IV. Channel Model: Let hu,m(f1) denote the channel from user u to …

… We consider the problem of downlink training and channel estimation in a FDD massive
MIMO system, where the BS equipped with a large number of antennas serves a number of …

… We consider adopting an OFDM model in FDD massive MIMO systems. The BS is equipped
with Nb antennas, the UE is equipped with Nu antennas, and the number of subcarriers is Ns…

… MIMO systems in different types of propagation environment. … CONCLUSION In this paper,
we developed directional training scheme for FDD massive MIMO systems to reduce the large …