A Novel Frequency Reuse Model for Co-Existing LEO and GEO Satellites

被引:0
|
作者
Li, Bohai [1 ]
Park, Jihong [1 ]
Al-Hourani, Akram [2 ]
Pokhrel, Shiva Raj [1 ]
Choi, Jinho [1 ]
机构
[1] Deakin Univ, Sch Informat Technol, Burwood, Vic 3125, Australia
[2] RMIT Univ, Sch Engn, Melbourne, Vic 3000, Australia
关键词
Satellites; frequency reuse; dynamic spectrum access; cognitive radio;
D O I
10.1109/LWC.2024.3357971
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The efficient utilization of limited spectral resources in space presents a significant challenge given the rapidly increasing number of satellites (SATs) in various orbits. To address this challenge, it is paramount to enhance spectral efficiency by facilitating inter-operation between SATs in different orbits. In this letter, we investigate the impact of dynamic spectrum access (DSA) on the spectral efficiency of a SAT network that integrates geostationary (GEO) and low Earth orbit (LEO) SATs. Specifically, in the context of DSA, the secondary LEO SATs can opportunistically reuse the frequency bands originally assigned to primary GEO SATs. To characterize the resultant spectral efficiency in a realistic time-varying SAT network topology, we analyze the signal-to-interference-plus-noise ratio (SINR) at the nadir user of a randomly selected LEO SAT and an upper bound on average throughput of the LEO SAT. Simulation results demonstrate the significant advantages of DSA in enhancing the spectral efficiency of the integrated GEO-LEO SAT network.
引用
收藏
页码:1024 / 1028
页数:5
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