A second order stationary scheme for complex linear systems

Abstract

In this paper we show the uniqueness and give analytical expressions for the optimum values of the parameters involved in the second order stationary scheme proposed in [2]. We also prove that the aforementioned scheme has exactly the same asymptotic rate of convergence and the same structure with (as well as a little less operations per iteration than) the non-stationary scheme proposed in [5] (or [6]).