Cell-free; Low earth orbit satellites; Ratio performance; Resources allocation; Satellite network; Signalto-interference-plus-noise ratios (SINR); Synchronization error; Synchronization signals; Time frequency; Electrical and Electronic Engineering
Abstract :
[en] This paper delves into the dynamics of resource allocation in ultra-dense Low Earth Orbit (LEO) satellite networks within a cell-free massive MIMO framework, focusing on the impact of residual synchronization errors. We conduct various analyses to understand how these errors - encompassing time, phase, and frequency - influence the Signal-to-Interference-plus-Noise Ratio (SINR) and the average number of satellite links connected to each user. Our approach measures the effects of these remaining synchronization errors and uses these values to inform and optimize power and resource allocation decisions. The study reveals that as synchronization errors increase, the number of effective satellite links to users diminishes, consequently reducing the number of satellites actively connected to each user. This research not only highlights the critical impact of synchronization errors on network performance but also demonstrates how advanced knowledge of these error variances can significantly enhance resource allocation strategies and network efficiency in future ultra-dense LEO satellite systems.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications
Disciplines :
Electrical & electronics engineering
Author, co-author :
MAHIN ZAEEM, Reza ✱; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
MERLANO DUNCAN, Juan Carlos ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
HA, Vu Nguyen ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > PI Ottersten
✱ These authors have contributed equally to this work.
External co-authors :
no
Language :
English
Title :
Synchronization Errors and SINR Performance: How Critical Are They in Cell-Free Massive MIMO with Ultra-Dense LEO Satellite Connectivity?
Alternative titles :
[en] Synchronization Errors and SINR Performance: How Critical Are They in Cell-Free Massive MIMO with Ultra-Dense LEO Satellite Connectivity?
Original title :
[en] Synchronization Errors and SINR Performance: How Critical Are They in Cell-Free Massive MIMO with Ultra-Dense LEO Satellite Connectivity?
FNR16352790 - Ground-based Distributed Beamforming Harmonization For The Integration Of Satellite And Terrestrial Networks., 2021 (01/06/2022-31/05/2025) - Juan Merlano Duncan
Name of the research project :
U-AGR-7112 - C21/16352790/ARMMONY - MERLANO DUNCAN Juan
Funders :
FNR - Luxembourg National Research Fund
Funding number :
FNR16352790
Funding text :
This work was supported by the Luxembourg National Research Fund (FNR), through the CORE Project (ARMMONY): Ground-based distributed beamforming harmonization for the integration of satellite and Terrestrial networks, under Grant FNR16352790.
M. Y. Abdelsadek, G. Karabulut-Kurt, H. Yanikomeroglu, P. Hu, G. Lamontagne, and K. Ahmed, "Broadband Connectivity for Handheld Devices via LEO Satellites: Is Distributed Massive MIMO the Answer, " IEEE Open J. Commun. Society, vol. 4, 2023.
V. N. Ha et al., "User-centric beam selection and precoding design for coordinated multiple-satellite systems", arXiv: 2403. 08371, 2024.
J. C. M. Duncan et al., "Harnessing the Power of Swarm Satellite Networks with Wideband Distributed Beamforming, " in proc. 2023 PIMRC, Canada, 2023.
M. Y. Abdelsadek, G. K. Kurt, and H. Yanikomeroglu, "Distributed massive MIMO for LEO satellite networks, " IEEE Open Journal of the Communications Society, vol. 3, pp. 2162-2177, 2022.
J. Li, M. Liu, P. Zhu, D. Wang, and X. You, "Impacts of asynchronous reception on cell-free distributed massive MIMO systems, " IEEE Transactions on Vehicular Technology, vol. 70, no. 10, 2021.
J. Zheng, J. Zhang, J. Cheng, V. C. Leung, D. W. K. Ng, and B. Ai, "Asynchronous cell-free massive MIMO with rate-splitting, " IEEE Journal Sel. Areas in Commun., vol. 41, no. 5, 2023.
J. Zhu, Y. Sun, and M. Peng, "Timing advance estimation in low earth orbit satellite networks, " IEEE Trans. Vehi. Tech., 2023.
F. Kunzi and O. Montenbruck, "Precise onboard time synchronization for LEO satellites, " NAVIGATION: Journal of the Institute of Navigation, vol. 69, no. 3, 2022.
P. Chatterjee and J. A. Nanzer, "Effects of time alignment errors in coherent distributed radar, " in 2018 IEEE Radar Conference (Radar-Conf18), April 2018, pp. 0727-0731.
M. Rashid and J. A. Nanzer, "Frequency and phase synchronization in distributed antenna arrays based on consensus averaging and Kalman filtering, " IEEE Trans. Wireless Commun., vol. 22, no. 4, 2022.
Y. Li, Q. Lin, Y. F. Liu, B. Ai, and Y. C. Wu, "Asynchronous activity detection for cell-free massive MIMO: From centralized to distributed algorithms, " IEEE Trans. Wireless Commun., vol. 22, no. 4, 2022.
J. Zheng, Z. Zhao, J. Zhang, J. Cheng, and V. C. Leung, "Performance analysis of cell-free massive MIMO systems with asynchronous reception, " in 2022 IEEE GC Wkshps, December 2022.
J. A. Nanzer, S. R. Mghabghab, S. M. Ellison, and A. Schlegel, "Distributed phased arrays: Challenges and recent advances, " IEEE Trans. Micro. Theory Tech., vol. 69, no. 11, 2021.
S. R. Mghabghab, S. M. Ellison, and J. A. Nanzer, "Open-loop distributed beamforming using wireless phase and frequency synchronization, " IEEE Microwave and Wireless Components Letters, vol. 32, no. 3, pp. 234-237, 2021.
Y. Wan, J. Long, L. Liu, Z. Qian, and S. Zhong, "Downlink aware data scheduling with delay guarantees in resource-limited leo satellite networks, " Peer-to-Peer Networking and Applications, vol. 14, 2021.
W. Wang, T. Chen, R. Ding, G. Seco-Granados, L. You, and X. Gao, "Location-based timing advance estimation for 5G integrated LEO satellite communications, " IEEE Transactions on Vehicular Technology, vol. 70, no. 6, pp. 6002-6017, 2021.
J. M. Merlo, S. R. Mghabghab, and J. A. Nanzer, "Wireless picosecond time synchronization for distributed antenna arrays, " IEEE Transactions on Microwave Theory and Techniques, vol. 71, no. 4, 2022.
ö. Özdogan, E. Björnson, and J. Zhang, "Performance of cell-free massive MIMO with Rician fading and phase shifts, " IEEE Transactions on Wireless Communications, vol. 18, no. 11, pp. 5299-5315, 2019.
H. Nguyen-Kha, V. N. Ha, E. lagunas, S. Chatzinotas, and J. Grotz, "Joint Two-tier User Association and Resource Management for Integrated Satellite-Terrestrial Networks", TechRxiv. 23921631. v1, 2023.
V. N. Ha, J. C. M. Duncan, E. Lagunas, J. Querol, S. Chatzinotas. "Energy-Efficient Precoding and Feeder-Link-Beam Matching Design for Bent-Pipe SATCOM Systems", in Proc. ICC 2023.
H. Nguyen-Kha, V. N. Ha, E. Lagunas, S. Chatzinotas, and J. Grotz, "Two-Tier User Association and Resource Allocation Design for Integrated Satellite-Terrestrial Networks, " in proc. 2023 ICC Workshops, Rome, Italy, 2023.
V. N. Ha, T. T. Nguyen, E. Lagunas, J. C. Merlano Duncan and S. Chatzinotas, "GEO Payload Power Minimization: Joint Precoding and Beam Hopping Design, " in proc. IEEE GLOBECOM 2022.
R. M. Zaeem, J. C. M. Duncan, W. A. Martins, V. N. Ha, S. Chatzinotas, and B. Ottersten, "Resource Allocation and User Scheduling Design for User-Centric Cell-Free Massive MIMO Systems, " in Proc. 2023 PIMRC, 2023, pp. 1-6.
