On Optimal Placement of Short Range Base Stations for Indoor Position Estimation

Abstract

The use of short-range wireless for object positioning has seen a growing interest in recent years. This interest iscompounded by the inherent GPS limitations especially in indoor situations and in urban canyons. In order to achievethe highest performance of short-range positioning systems it is important to optimize the placement of Base-Stations(BSs) in a given area. The problems of BSs placement to minimize error and to achieve multiple coverage of the areahave been addressed separately in the literature. In this paper, we discuss that using short range BSs the twoproblems are interrelated and need to be solved jointly. We study the impact of different influential attributes of thepositioning problem as we alter the layout of BSs in the area. We investigate different scenarios for short-range BSsplacement that maximize coverage and minimize positioning error. Simulation results demonstrate that betterperformance could be achieved using layouts that tend to distribute the BSs uniformly.