Second-order DOA estimation from digitally modulated signals

J. Villares, G. Vazquez
The Thrity-Seventh Asilomar Conference on Signals, Systems & Computers, 2003  
Absfracf-The paper deais with the problem of estimating the direction-of-arrival (DOA) of multlple digitally-modulated soumes. This problem arises naturally when studying positioning applications in the context of cellular systems. The formulation of the optimal second-order tracker is found to depend on the transmitted symbols distribution for medium-to-high slgnal-tonoise ratios (SNR). Simulations show that the common Gaussian assumption yields significant losses for moderate SNRs if the
more » ... te SNRs if the soumes imping from similar angles andlor the aperture is short. In these circumstances the multiuser interference (MUI) plays a prominent role and MUI-resistant techniques are evaluated.
doi:10.1109/acssc.2003.1292306 fatcat:wu5ah7e6lfa2hktfj6ryhdux7y