Joint estimation of DOA and delay using TST-MUSIC in a wireless channel

A multiple signal classification (MUSIC)-based approach, time-space-time MU SIC (TST-MUSIC), is proposed to jointly estimate the directions of arrival (DOAs) and the propagation delays of a wireless channel, The MUSIC for the DOA and the propagation delay estimation are referred to as the S-MUSIC and the T-MUSIC, respectively. Using the space-time characteristics of the mul tiray channel, the proposed algorithm in a tree structure comhines the temp oral filtering techniques and the spatial beamforming techniques with one S -MUSIC and two T-MUSICS. The incoming rays are thus grouped, isolated, and estimated.