DUAL-POLARIZED ARRAY FOR SIGNAL-PROCESSING APPLICATIONS IN WIRELESS COMMUNICATIONS

A novel dual-polarized antenna array designed for a spatial division m ultiple access (SDMA) system working in the 1850-1990-MHz band is desi gned and built. The antenna is designed to have similar element patter ns, and measurements of S-parameters and radiation patterns are presen ted. The array signal processing performance of the array using all el ements and with no compensation for mutual coupling or differences in element patterns is studied through direction-of-arrival (DOA) estimat ion using total least squares estimation of signal parameters via rota tional invariance techniques (TLS-ESPRIT), The results show that the a ccuracy of the DOA estimates is quite acceptable for wireless communic ation applications.