A robust mobile speed estimator in fading channels: performance analysis and experimental results

In this paper we propose a novel speed estimation technique, based on the characteristics of the power spectrum of mobile fading channels. Our analytic performance analysis, verified by Monte Carlo simulations, shows that the simple yet low-complexity estimator is not only robust to both Gaussian and non-Gaussian noises, but also insensitive to nonisotropic scattering observed in practical situations at the mobile. The estimator performs very well in both two- and three-dimensional propagation environments, where the latter case has not been studied so far, to the best of our knowledge. The utility of the new method is further demonstrated by applying it to the measured data