For the last few decades, wireless communication has been facing a technological
revolution. High data rate and continuous connectivity are the necessities because the …

Device activity detection in the emerging cell-free massive multiple-input multiple-output
(MIMO) systems has been recognized as a crucial task in machine-type communications, in …

In the uplink machine-type communication (MTC) system, a combination of grant-free
transmission and non-orthogonal multiple access (NOMA) emerges to reduce the control …

In this paper, we investigate a joint device activity detection (DAD), channel estimation (CE),
and data decoding (DD) algorithm for multiple-input multiple-output (MIMO) massive …

In this work, we present a joint channel estimation, activity detection and data decoding
scheme for massive machine-type communications. By including the channel and the a …

We propose a joint channel estimation and data detection (JED) algorithm for densely-
populated cell-free massive multiuser (MU) multiple-input multiple-output (MIMO) systems …

We propose a novel joint activity, channel and data estimation (JACDE) scheme for multiple-
input multiple-output (MIMO) systems. The contribution aims to allow significant overhead …

This paper investigates a channel estimator based on Gaussian mixture models (GMMs) in
the context of linear inverse problems with additive Gaussian noise. We fit a GMM to given …

This paper considers a massive random access problem in which a large number of
sporadically active devices wish to communicate with a base station (BS) equipped with …

This paper studies the device activity detection problem in a multi-cell massive multiple-input
multiple-output (MIMO) system, in which the active devices transmit signature sequences to …