Doppler Spread Estimation by Subspace Tracking for OFDM Systems
arXiv:0811.0419
Abstract
This paper proposes a novel maximum Doppler spread estimation algorithm for OFDM systems with the comb-type pilot pattern. By tracking the drifting delay subspace of the multipath channel, the time correlation function is measured at a high accuracy, which accordingly improves the estimation accuracy of the maximum Doppler spread considerably.
5 pages, 3 figures, To appear in IEEE GLOBECOM'08