A Placement Strategy for Accurate TOA Localization Algorithm

Nowadays, localization information is widely used in various location-dependant applications in Ad Hoc, wireless sensor networks (WSN), and other communication networks. Meanwhile, localization algorithm is becoming an important issue in wireless communication research. As one important part in localization algorithms, placement strategy can be simply used in real wireless communication networks. In this paper, we analyze the effect of beacon nodes placement strategy on location estimation accuracy. Based on this analysis, a placement strategy which can propose more accurate location estimation is proposed. This placement strategy need no additional hardware, and can be easily implemented. We also offer some simulation results based on Time of Arrival (TOA) algorithm to confirm the advantage of the placement strategy.