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학술지 Performance Analysis of Satellite Communication System Under the Shadowed-Rician Fading: A Stochastic Geometry Approach
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저자
정동현, 유준규, 변우진, 최준일
발행일
202204
출처
IEEE Transactions on Communications, v.70 no.4, pp.2707-2721
ISSN
0090-6778
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TCOMM.2022.3142290
협약과제
22HH4700, 3차원 공간 위성통신 기술 개발, 박승근
초록
In this paper, we consider downlink low Earth orbit (LEO) satellite communication systems where multiple LEO satellites are uniformly distributed over a sphere at a certain altitude according to a homogeneous binomial point process (BPP). Based on the characteristics of the BPP, we analyze the distance distributions and the distribution cases for the serving satellite. We analytically derive the exact outage probability, and its approximated expression is obtained using the Poisson limit theorem. With these derived expressions, the system throughput maximization problem is formulated under the satellite-visibility and outage constraints. To solve this problem, we reformulate it with bounded feasible sets and propose an iterative algorithm to obtain near-optimal solutions. Simulation results perfectly match the derived exact expressions for the outage probability and system throughput. The analytical results of the approximated expressions are fairly close to those of the exact ones. It is also shown that the proposed algorithm for the throughput maximization is very close to the optimal performance obtained by a two-dimensional exhaustive search.
KSP 제안 키워드
Binomial point process(BPP), Low earth orbit (LEO) satellite, Near optimal solution, Outage probability(OP), Performance analysis, Shadowed Rician fading, Stochastic geometry, System throughput maximization, Uniformly distributed, analytical results, distance distributions