… The objective of this paper is to provide a summary of these low-rank approaches for massive
MIMO channel estimation, focusing on their basic ideas, detailed realization scheme, as …

… we focus on channel estimation and uplink performance for massive MIMO systems with one…
are applied separately for data detection and channel estimation. One essential and unique …

… large-scale massive MIMO system still holds directionality, then we can reuse the methods
designed for massive MIMO systems to estimate the near-field non-stationary channel. …

… We consider the downlink of a massive MIMO system, in which the transmitter is equipped
with Nt antennas and the receiver is equipped with Nr antennas. The channel from the …

… systems, but they are not applicable to joint user grouping and channel estimation in multi-user
massive MIMO systems… proposed for wideband directionof-arrival estimation in [38] is the …

… not only by the estimation errors, but … estimation and application at the base stations. Instead,
we focus on time-division duplexing (TDD) massive MIMO systems and exploit the channel …

… In the current paper, we propose novel pilot optimization and channel estimation algorithm
… is more relevant for massive MIMO systems than that of the conventional MIMO systems. …

… large-dimensional channel estimation problem occurs in massive MIMO systems with a large
… In Section IV, we propose the CS-based MU-MIMO channel estimation method via nuclear …

… , this paper investigates semi-blind channel estimation for multiuser MIMO systems. An …
We study effects of semi-blind channel estimation in regular MIMO and massive MIMO systems …

… overhead in channel estimation of massive MIMO systems and … channel estimation scheme
[25]; that is, after the UE receives the compressed measurement Y k , the channel estimation …