Joint angle and delay estimation (JADE) for multipath signals arriving at an antenna array
M.C. Vanderveen, Constantinos B. Papadias, Arogyaswami J. Paulraj · IEEE Communications Letters · 1997
In wireless communications, mobiles emit signals that arrive at a base station via multiple paths. Estimating each path's angle-of-arrival (AOA) and propagation delay is necessary for several applications, such as mobile localization for emergency services. We propose a novel subspace approach to estimate the AOA and delays of multipath signals from digitally modulated sources arriving at an antenna array. Our method uses a collection of estimates of a space-time vector channel. The Cramer-Rao bound (CRB) and simulations are provided.