… channels are approximately orthogonal in sparse channels. Such an … massive MIMO under
spatial and frequency correlated channels can be simply removed by linear MMSE channel …

… Furthermore, the massive access problem with sparse user activity has also been studied
from an information-theoretical perspective [25], [26]. In particular, the authors in [26] proposed …

… In Section II, we present the system model, including the burst-sparse massive MIMO channel
model and the problem formulation for burst-sparse channel estimation. In Section III, we …

… A new trend to investigate massive MIMO, especially for the sparse scenario like millimeter
… channel in massive MIMO systems. The downlink channel % of the OTFS massive MIMO is a …

… In this paper, we propose a new type of deep learning (DL)-based parametric channel …
pilot signal and the sparse channel parameters characterizing the angular domain channel. By …

… CONCLUSION This work considered the maximum likelihood problem of blind massive
MIMO channel estimation. Based on the sparsity in the angular frequency domain, an l1 …

… In Section II, we introduce a sparse channel model for the massive MIMO system. In Section
III, we present upper and lower bounds of the capacity of the massive MIMO system. In …

… sparse channel estimation algorithms. In this framework, a Markov prior is used to model the
structured sparsity in massive MIMO channels… solve the resulting sparse channel estimation …

… massive MIMO scenarios the channel possesses a sparse multipath structure, and the nonzero
entries of the sparse channel … large in massive MIMO. As such, there is mapping from the …

… We provide a novel off-grid model for massive MIMO channel sparse representation with
an arbitrary 2D-array geometry. Off-grid models have been applied widely to the direction-of-…