Non-Bayesian activity detection, large-scale fading coefficient estimation, and unsourced random access with a massive MIMO receiver

A Fengler, S Haghighatshoar, P Jung… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper, we study the problem of user activity detection and large-scale fading
coefficient estimation in a random access wireless uplink with a massive MIMO base station …

RadioUNet: Fast radio map estimation with convolutional neural networks

R Levie, Ç Yapar, G Kutyniok… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper we propose a highly efficient and very accurate deep learning method for
estimating the propagation pathloss from a point (transmitter location) to any point on a …

Uplink massive access in mixed RF/FSO satellite-aerial-terrestrial networks

Q Huang, M Lin, WP Zhu, J Cheng… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This paper investigates the massive access for a satellite-aerial-terrestrial network (SATN),
where a high-altitude platform (HAP) is deployed as a relay to assist the uplink transmission …

AI assisted PHY in future wireless systems: Recent developments and challenges

W Chen, R He, G Wang, J Zhang, F Wang… - China …, 2021 - ieeexplore.ieee.org
Nowadays, the rapid development of artificial intelligence (AI) provides a fresh perspective
in designing future wireless communication systems. Innumerable attempts exploiting AI …

Joint activity detection and channel estimation in cell-free massive MIMO networks with massive connectivity

M Guo, MC Gursoy - IEEE Transactions on Communications, 2021 - ieeexplore.ieee.org
Cell-free massive MIMO is one of the key technologies for future wireless communications,
in which users are simultaneously and jointly served by all access points (APs). In this …

Deep-learned approximate message passing for asynchronous massive connectivity

W Zhu, M Tao, X Yuan, Y Guan - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This paper considers the massive connectivity problem in an asynchronous grant-free
random access system, where a huge number of devices sporadically transmit data to a …

Grant-free access via bilinear inference for cell-free MIMO with low-coherence pilots

H Iimori, T Takahashi, K Ishibashi… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
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 …

Phase transition analysis for covariance-based massive random access with massive MIMO

Z Chen, F Sohrabi, YF Liu, W Yu - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
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 …

Sparse activity detection in multi-cell massive MIMO exploiting channel large-scale fading

Z Chen, F Sohrabi, W Yu - IEEE Transactions on Signal …, 2021 - ieeexplore.ieee.org
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 …

Feature-aided adaptive-tuning deep learning for massive device detection

X Shao, X Chen, Y Qiang, C Zhong… - IEEE Journal on …, 2021 - ieeexplore.ieee.org
With the increasing development of Internet of Things (IoT), the upcoming sixth-generation
(6G) wireless network is required to support grant-free random access of a massive number …