Patent ID: 6404803
Filing Date: 2002-06-11
Classification: H01Q,H04B

Abstract:
A method for acquiring a pseudo-noise (PN) code comprising the steps of:accumulating despread samples obtained from a plurality of elements in a smart antenna array at a sampling rate, the samples being despread using a PN code shifted by a trial PN code phase error, separate accumulations being maintained for each element; updating an antenna array weight vector based on the accumulated despread samples; forming a spatially correlated signal by weighting the accumulated despread samples from each element with a corresponding weight from the updated antenna array weight vector and combining the weighted samples; comparing the spatially correlated signal to a threshold to determine whether PN code acquisition has been achieved; and selecting a new trial PN code phase error and repeating the accumulating, updating, forming and comparing steps if PN code acquisition has not been achieved.