A joint scheme of antenna selection and power allocation for localization in MIMO radar sensor networks

We consider a joint scheme of antenna subset selection (ASS) and optimal power allocation (OPA) for localization in multiple-input multiple-output (MIMO) radar sensors networks. The sensor management is accomplished by solving a constrained optimization problem that is formulated to minimize the error in estimating target position, while conserving transmitter number and power budget. We propose a suboptimal scheme for approximately solving this problem. The scheme separates the optimization into two steps, in which each step is transformed into a second-order cone programming (SOCP) by convex relaxation. Simulation results show that the proposed suboptimal two-step SOCP solution provides better localization performance for other strategies.