In the multi-path communication scenario

it is needed to estimate the two-dimensional angles and relative time delays of each multi-path ray.We have derived a method based on DOA Matrix for the estimation of these parameters from the estimated channel impulse response

using knowledge of the transmitted pulse shape function.Compared with the multi-dimensional MUSIC-like or ESPRIT-like ones

the algorithm doses not need any search.It is a closed form solution

so it has slight computation burden.