Authors: Trinh Van Chien, Ha An Le, Ta Hai Tung, Hien Quoc Ngo, Symeon Chatzinotas

Published on: January 08, 2024

Impact Score: 8.15

Arxiv code: Arxiv:2401.03754

Summary

• What is new: Integration of satellite and ground communications for IoT, using a novel approach for user scheduling and power allocation to optimize throughput.
• Why this is important: The need for efficient multiple-access scenarios in IoT networks to manage numerous users with limited radio resources.
• What the research proposes: An approach that splits users into scheduled and unscheduled groups, calculating uplink throughput with a model-based or learning-based method for user scheduling and power allocation.
• Results: The proposed integrated satellite-terrestrial systems can significantly increase the sum ergodic throughput, although some users may be unserved due to power constraints.

Technical Details

Technological frameworks used: Graph neural networks, cell-free massive MIMO systems

Models used: Alternating optimization models, learning-based models for power allocation

Data used: Uplink ergodic throughput data under imperfect CSI and non-orthogonal pilot signals

Potential Impact

Telecommunication companies, IoT service providers, satellite communication firms, network equipment manufacturers

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