The Effect of Shadowing on Cell Residence Time in Mobile LEO Satellite Cellular Systems

Abstract. In previous literature, several cell residence time models formobile LEO satellite cellular system (MLSCS) were presented.However, the effects of signal-impairing factors such as shadowingand fading on the presented models were neglected. In this paper, theeffects of signal-impairing factors on cell residence time model areinvestigated. In particular, the probability density function of the cellradius and the probability density function of the maximum cellresidence time for MLSCS in the presence of shadowing are derived.Then, we study the performance of MLSCS in the presence of signalimpairingfactors. Specifically, we evaluate the probability ofpremature call termination due to handoff failure and the probabilityof call dropping due to handoff failure or new call blocking in thepresence of signal-impairing factors. The analytical results arevalidated by computer simulation.