Sparse signal processing for grant-free massive connectivity: A future paradigm for random access protocols in the Internet of Things

L Liu, EG Larsson, W Yu, P Popovski… - IEEE Signal …, 2018 - ieeexplore.ieee.org
The next wave of wireless technologies will proliferate in connecting sensors, machines, and
robots for myriad new applications, thereby creating the fabric for the Internet of Things (IoT) …

Massive connectivity with massive MIMO—Part I: Device activity detection and channel estimation

L Liu, W Yu - IEEE Transactions on Signal Processing, 2018 - ieeexplore.ieee.org
This two-part paper considers an uplink massive device communication scenario in which a
large number of devices are connected to a base station (BS), but user traffic is sporadic so …

Joint activity detection and channel estimation for IoT networks: Phase transition and computation-estimation tradeoff

T Jiang, Y Shi, J Zhang… - IEEE Internet of Things …, 2018 - ieeexplore.ieee.org
Massive device connectivity is a crucial communication challenge for Internet of Things (IoT)
networks, which consist of a large number of devices with sporadic traffic. In each coherence …

An optimal condition for the block orthogonal matching pursuit algorithm

J Wen, H Chen, Z Zhou - IEEE Access, 2018 - ieeexplore.ieee.org
Recovery of the support of a block K-sparse signal x from a linear model y= Ax+ v, where A
is a sensing matrix and v is a noise vector, arises from many applications. The block …

A new scaling law for activity detection in massive MIMO systems

S Haghighatshoar, P Jung, G Caire - arXiv preprint arXiv:1803.02288, 2018 - arxiv.org
In this paper, we study the problem of\textit {activity detection}(AD) in a massive MIMO setup,
where the Base Station (BS) has $ M\gg 1$ antennas. We consider a block fading channel …

Massive wireless random access with successive decoding: Delay analysis and optimization

Z Chen, Q Yao, HH Yang… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
In Internet of Things, wireless access networks are required to support a large number of
user equipments (UEs) in real time. With UEs' frequently arrival and departure, plenty of …

Sparse activity detection for massive connectivity in cellular networks: Multi-cell cooperation vs large-scale antenna arrays

Z Chen, F Sohrabi, W Yu - 2018 IEEE International Conference …, 2018 - ieeexplore.ieee.org
Sparse device activity detection for machine-type communications has attracted increasing
attention in recent studies. However, most of the previous works focus on the single-cell …

Joint user identification and channel estimation in massive connectivity with transmission control

Z Sun, Z Wei, L Yang, J Yuan… - 2018 IEEE 10th …, 2018 - ieeexplore.ieee.org
In this paper, we propose a transmission control scheme and design an approximate
message passing (AMP) algorithm for the joint user identification and channel estimation …

IoT random access in massive MIMO: Exploiting diversity in sensing matrices

MN Tehrani, S Farahmand - arXiv preprint arXiv:1811.11429, 2018 - arxiv.org
Recently, non-orthogonal codes have been advocated for IoT massive access. Activity
detection has been demonstrated to entail common support recovery in a jointly sparse …

[PDF][PDF] Sparse Signal Processing for Grant-Free Massive IoT Connectivity

L Liu, EG Larsson, W Yu, P Popovski - researchgate.net
The next wave of wireless technologies will prolifer-ate in connecting sensors, machines,
and robots for myriad new applications, thereby creating the fabric for the Internet of Things …