Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/11709
Title: Interplay Between Sensing and Communication in Cell-Free Massive Mimo With Urllc Users
Authors: Behdad, Z.
Demir, O.T.
Sung, K.W.
Cavdar, C.
Keywords: C-RAN
cell-free massive MIMO
Integrated sensing and communication
power allocation
URLLC
Approximation algorithms
Energy utilization
MIMO systems
C-RAN
Cell-free
Cell-free massive multiple-input multiple-output
Integrated sensing
Integrated sensing and communication
Low-latency communication
Multiple inputs
Multiple outputs
Power allocations
Ultra-reliable low-latency communication
Energy efficiency
Publisher: Institute of Electrical and Electronics Engineers Inc.
Abstract: This paper studies integrated sensing and communication (ISAC) in the downlink of a cell-free massive multiple-input multiple-output (MIMO) system with multi-static sensing and ultra-reliable low-latency communication (URLLC) users. We propose a successive convex approximation-based power allocation algorithm that maximizes energy efficiency while satisfying the sensing and URLLC requirements. In addition, we provide a new definition for network availability, which accounts for both sensing and URLLC requirements. The impact of blocklength, sensing requirement, and required reliability as a function of decoding error probability on network availability and energy ef-ficiency is investigated. The proposed power allocation algorithm is compared to a communication-centric approach where only the URLLC requirement is considered. It is shown that the URLLC-only approach is incapable of meeting sensing requirements, while the proposed ISAC algorithm fulfills both sensing and URLLC requirements, albeit with an associated increase in energy consumption. This increment can be reduced up to 75% by utilizing additional symbols for sensing. It is also demonstrated that larger blocklengths enhance network availability and offer greater robustness against stringent reliability requirements. © 2024 IEEE.
Description: 25th IEEE Wireless Communications and Networking Conference, WCNC 2024 -- 21 April 2024 through 24 April 2024 -- Dubai -- 200793
URI: https://doi.org/10.1109/WCNC57260.2024.10571226
https://hdl.handle.net/20.500.11851/11709
ISBN: 979-835030358-2
ISSN: 1525-3511
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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