基于OFDM的低轨卫星跳波束系统资源调度与分配算法研究

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中图分类号：TN919.23 文献标志码：A文章编号：1003-3114（2025）04-0823-09

Abstract：LowEarthOrbit（LEO）satelitebeam-hopping technologylaysthefoundationforflexibleresourcescheduling，andOrthogonalFrequencyDivisionMultiplexing（OFM）technologycanbeterscheduletime-frequencyresours.Atthesametime，thedemandforbusinessvolumehasincreaseddramatically，andthetypesofbusinessarebecomingmoreandmorediversified.Inorderto improvetheQualityofSrvce（QoSofusesiheLEOsatelitesysm，itisnecessrytooptietegraularitofsystmsouces to theuserlevel.Therefore，aresource schedulingandallcationalgorithmforLEOsatelitebeam-hoppingsystmbasedonOFDMis proposed，whichonsiderstheservicerequrementsandlinkconditionsatthebamlevel，uses teParticleSwarmOptimization（PSO） algorithmtoalocatetime，spaceandpowerresources，andalocates time，frequencyandpowerresourcesattheuserlevelacrdingto theuserlevelandQoSrequirements.Comparedwithtraditionalalgorithms，thesystemthroughputisimprovedndtheaveragesystem latency is reduced.

Keywords：LEO satellite；beam hopping;PSO;QoS；resource allocation

0引言

在多波束卫星通信系统中，传统固定化多色复用的方式对系统资源造成了严重浪费，且无法适应用户的不同业务需求，限制了卫星系统性能的提升[]。（剩余10841字）