NOMA and future 5G & B5G wireless networks: A paradigm
For the last few decades, wireless communication has been facing a technological
revolution. High data rate and continuous connectivity are the necessities because the …
revolution. High data rate and continuous connectivity are the necessities because the …
Asynchronous activity detection for cell-free massive MIMO: From centralized to distributed algorithms
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 …
(MIMO) systems has been recognized as a crucial task in machine-type communications, in …
Sensing user's activity, channel, and location with near-field extra-large-scale MIMO
This paper proposes a grant-free massive access scheme based on the millimeter wave
(mmWave) extra-large-scale multiple-input multiple-output (XL-MIMO) to support massive …
(mmWave) extra-large-scale multiple-input multiple-output (XL-MIMO) to support massive …
Joint device detection, channel estimation, and data decoding with collision resolution for MIMO massive unsourced random access
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 …
and data decoding (DD) algorithm for multiple-input multiple-output (MIMO) massive …
Joint channel estimation, activity detection and data decoding based on dynamic message-scheduling strategies for mMTC
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 …
scheme for massive machine-type communications. By including the channel and the a …
Deep learning-based user activity detection and channel estimation in grant-free NOMA
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 …
transmission and non-orthogonal multiple access (NOMA) emerges to reduce the control …
Joint channel estimation and data detection in cell-free massive MU-MIMO systems
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 …
populated cell-free massive multiuser (MU) multiple-input multiple-output (MIMO) systems …
Grant-free access via bilinear inference for cell-free MIMO with low-coherence pilots
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 …
input multiple-output (MIMO) systems. The contribution aims to allow significant overhead …
An asymptotically MSE-optimal estimator based on Gaussian mixture models
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 …
the context of linear inverse problems with additive Gaussian noise. We fit a GMM to given …
Sparse activity detection in multi-cell massive MIMO exploiting channel large-scale fading
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 …
multiple-output (MIMO) system, in which the active devices transmit signature sequences to …