Abstract
In this paper we construct a hybrid architecture that combines terrestrial cell-free massive MIMO system and multi-beam satellite communication system to maximize the throughput within the coverage. We propose an interference-level based user selection algorithm to divert terrestrial users with stronger interference to satellite service, thereby reducing the total system interference. For satellite users, to further increase the system throughput, we use the co-frequency across beams, which include two steps, inter-beam and intra-beam resource allocation. The former uses soft frequency reuse and the latter is allocated based on water-filling algorithm. The simulation results show that the proposed satellite-aided cell-free system has a significant improvement in throughput compared with the traditional system. At the same time, the throughput of satellite users is also improved compared with the traditional frequency reuse scheme.
Supported by National Key R &D Program of China (2020YFB1807204).
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Pang, M., Wang, C., Deng, D., Li, Y., Wang, W., Xu, L. (2023). Interference-aware Spectrum and Power Coordination in Satellite-aided Cell-free Massive MIMO System. In: Gao, F., Wu, J., Li, Y., Gao, H. (eds) Communications and Networking. ChinaCom 2022. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 500. Springer, Cham. https://doi.org/10.1007/978-3-031-34790-0_29
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