A comparative study for multipath mobile radio channel estimation algorithms

In this paper we present a comparative study of two adaptive algorithms applied to the impulse response estimation of the newly proposed space-time geometrical-based hyperbolic distributed scatterers (GBHDS) channel model. The two adaptive algorithms which form the basis of this study are the decision-directed recursive least square (RLS) and the decision-directed least mean square (LMS) algorithms. In this estimation task, the performance of the decision-directed RLS algorithm is found to be better than that of the decision-directed LMS algorithm.