상세정보
학술지
Dynamic power and bandwidth allocation for DVB-based LEO satellite systems
- 발행일
- 202212
- 출처
- ETRI Journal, v.44 no.6, pp.955-965
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 22HH3900, 비정지궤도 위성망 주파수 간섭 평가/공유 기술 개발, 오대섭
- 초록
- A low Earth orbit (LEO) satellite constellation could be used to provide network coverage for the entire globe. This study considers multi-beam frequency reuse in LEO satellite systems. In such a system, the channel is time-varying due to the fast movement of the satellite. This study proposes an efficient power and bandwidth allocation method that employs two linear machine learning algorithms and take channel conditions and traffic demand (TD) as input. With the aid of a simple linear system, the proposed scheme allows for the optimum allocation of resources under dynamic channel and TD conditions. Additionally, efficient projection schemes are added to the proposed method so that the provided capacity is best approximated to TD when TD exceeds the maximum allowable system capacity. The simulation results show that the proposed method outperforms existing methods.
- KSP 제안 키워드
- Allocation method, Dynamic channel, Dynamic power, Linear machine, Linear systems, Low earth orbit (LEO) satellite, Machine Learning Algorithms, Multi-beam, Network Coverage, Projection schemes, Satellite Constellation
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