H∞ Filter with Adaptive Robustness Level for Space-Time Equalization

In this work, we propose the combination of mean performance and robustness in the context of adaptive space-time channel equalization. We first briefly discuss H-2 and H-infinity optimization criteria, which are respectively associated to mean performance and robustness. As an alternative to the convex combination of H-2 and H-infinity filters to join the desirable properties, we propose an adaptation scheme for the robustness level of the H-infinity filter for combining mean performance and robustness through a unique filter.