Robust Power Management for Cooperation in Jammed Wireless Localization Systems

Abstract

In this paper, a robust power management method is proposed to solve the power allocation problem in a jammed cooperative wireless localization system. Because the localization accuracy and the lifetime of networks are both depended on the power allocation strategies, it is a critical task to trade-off the localization accuracy and power consumption through power management method. Moreover, if there are jammer nodes, the problem meets new challenge to consider the effect of jammers. So in this paper, we develop a power management method to minimize the localization errors with power constraints. First, the cooperation between agent nodes is considered in a jammed wireless localization system. Then the uncertain parameters of different nodes are derived to obtain robust power allocation strategies. What’s more, the problem can be transformed into semi-definite programs (SDPs) to have efficient solutions. Simulation results indicate that the proposed power management method can reach more efficient power allocation strategies than uniform power allocation and the robust strategies have better performance than non-robust strategies.