Patent ID: 8736490

Claim:
A method, comprising: receiving one or more satellite positioning system (SPS) signals at two or more physically separated antennae of a mobile station, said two or more antennae to provide a respective two or more radio frequency signals to a receiver of the mobile station; downconverting one or more of said radio frequency signals in one or more respective paths of a front end of the receiver to generate two or more complex digital signals comprising in-phase and quadrature components; and processing the two or more complex digital signals at least in part to improve one or more performance metrics related to position estimation operations, including combining the two or more complex digital signals according to a non-coherent combining algorithm to generate a combined digital signal; wherein said non-coherent combining algorithm comprises despreading and rotating each of the two or more complex digital signals, respectively, and combining the despread signals in a non-coherent combining operation to produce the combined digital signal.