Institute of Electrical & Electronic Engineers
In wireless localization systems, mobile nodes (agents) typically obtain their positions through ranging with respect to fixed infrastructure (anchors). Transmission power allocation not only affects network lifetime, throughput and interference, but also determines the localization accuracy. In this paper, the authors develop a robust anchor power allocation strategy to combat imperfect network topology parameters. They formulate the problem to minimize the Squared Position Error Bound (SPEB), which characterizes the fundamental limit of localization accuracy, and show that such formulation can be efficiently solved via Semi-Definite Programming (SDP).