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The Strongly Asynchronous Massive Access Channel [PDF]

open access: yesEntropy, 2022
This paper considers the Strongly Asynchronous, Slotted, Discrete Memoryless, Massive Access Channel (SAS-DM-MAC) in which the number of users, the number of messages, and the asynchronous window length grow exponentially with the coding blocklength with
Sara Shahi   +2 more
doaj   +5 more sources

A Left-Null-Space-Based Massive Access Method for Cell-Free Massive MIMO IoT Systems [PDF]

open access: yesSensors, 2023
Cell-free massive multiple-input multiple-output (MIMO) is a promising technology for the Internet of Things (IoT) because it can increase connectivity and provide considerable energy efficiency (EE) and spectral efficiency (SE).
Yang Wang, Die Hu
doaj   +2 more sources

Preamble Design and Collision Resolution in a Massive Access IoT System [PDF]

open access: yesSensors, 2021
How to support massive access efficiently is one of the challenges in the future Internet of Things (IoT) systems. To address such challenge, this paper proposes an effective preamble collision resolution scheme to sustain massive random access (RA) for ...
Ailing Zhong   +4 more
doaj   +2 more sources

User-Centric Cell-Free Massive MIMO with Low-Resolution ADCs for Massive Access [PDF]

open access: yesSensors
This paper proposes a heuristic association algorithm between access points (APs) and user equipment (UE) in user-centric cell-free massive multiple-input-multiple-output (MIMO) systems, specifically targeting scenarios where UEs share the same frequency
Jin-Woo Kim   +7 more
doaj   +2 more sources

Random Access Protocols for Massive MIMO [PDF]

open access: yesIEEE Communications Magazine, 2017
5G wireless networks are expected to support new services with stringent requirements on data rates, latency and reliability. One novel feature is the ability to serve a dense crowd of devices, calling for radically new ways of accessing the network ...
Björnson, Emil   +4 more
core   +3 more sources

Massive Uncoordinated Access With Random User Activity [PDF]

open access: yes2021 IEEE International Symposium on Information Theory (ISIT), 2021
12 pages, 3 figures; presented in IEEE International Symposium on Information Theory (ISIT) 2021; simulation code available at: https://github.com/khachoang1412 ...
Ngo, Khac-Hoang   +3 more
openaire   +2 more sources

Massive Access in Media Modulation-Based Massive Machine-Type Communications [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2022
Accepted by IEEE Transactions on Wireless Communications.
Zhen Gao, Malong Ke, Li Qiao, Yikun Mei
openaire   +4 more sources

Fundamental Limits of Non-Orthogonal Multiple Access (NOMA) for the Massive Gaussian Broadcast Channel in Finite Block-Length

open access: yesSensors, 2021
Superposition coding (SC) has been known to be capacity-achieving for the Gaussian memoryless broadcast channel for more than 30 years. However, SC regained interest in the context of non-orthogonal multiple access (NOMA) in 5G.
Jean-Marie Gorce   +3 more
doaj   +1 more source

Access Delay Constrained Activity Detection in Massive Random Access [PDF]

open access: yes2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2021
5 pages, 4 ...
Robin, Jyotish, Erkip, Elza
openaire   +2 more sources

Multi-Channel Joint Forecasting-Scheduling for the Internet of Things

open access: yesIEEE Access, 2020
We develop a methodology for Multi-Channel Joint Forecasting-Scheduling (MC-JFS) targeted at solving the Medium Access Control (MAC) layer Massive Access Problem of Machine-to-Machine (M2M) communication in the presence of multiple channels, as found in ...
Volkan Rodoplu   +3 more
doaj   +1 more source

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