Estimating the scattering distribution of the received signal in micro-cellular systems

This paper presents a novel approach for estimating the distribution of the incoming waves at the mobile unit antenna, i.e. the scattering distribution, in a typical micro-cellular system. This estimate is vital in designing unbiased estimators for the velocity of mobile units. The proposed estimator deploys the zero-crossing rates of the quadrature components and the instantaneous frequency of the received signal at the mobile unit to estimate the scattering distribution. By means of simulations, it is shown that the proposed estimator exhibits small bias and root mean square error.