A smart antenna system may exploit space diversity by employing an array of antennas whose radiation pattern can be aligned in a direction of arrival (DoA) of a specific signal to be decoded. Smart antennas can be installed on a base station side and/or on a user terminal side. Certain embodiments of the present disclosure provide methods for computationally efficient and accurate searching of the DoA of a specific transmitted signal. The proposed methods utilize Assisted Global Positioning System (A-GPS) coordinates to determine the DoA.