Performance Evaluation of the SAGE Algorithm in Presence of Coupling
Jo Verhaevert, Emmanuel H. Van Lil, Antoine Van de Capelle · Ghent University Academic Bibliography (Ghent University) · 2002
In this study, we focus on the Space Alternating Generalised Expectation maximisation (SAGE) algorithm, which allows for high-resolution determination of the Direction of Arrival (DOA) parameters. This algorithm is used to replace the high-dimensional optimisation procedure necessary to compute the joint maximum likelihood estimate of the parameters by several separate, sequentially performed, procedures. Using different antenna elements causes that the radiation from one element couples to its neighbours. In this paper, this mutual coupling will be integrated in the SAGE algorithm. Convergence and performance analysis are based on numerical simulations and will be compared with the case without coupling.