Patent ID: 8457178

Claim:
A method of wireless communication, comprising: correlating a received signal with a synchronization sequence comprising a primary synchronization channel (PSC) sequence, a secondary synchronization channel (SSC) sequence, or a combination thereof, wherein a resulting correlated signal comprises two or more separate multipath components; analyzing at least one of the two or more separate multipath components and obtaining a frequency offset of the received signal from the analysis; splitting the received signal and the synchronization sequence into a plurality of time segments, wherein the correlating is applied to corresponding time segments of the received signal and synchronization sequence; obtaining a plurality of correlated time segments for each of the two or more separate multipath components; applying a differential product to correlated time segments of the at least one of the two or more separate multipath components, wherein the frequency offset of the received signal is obtained at least in part from a result of the differential product; applying the differential product to correlated time segments of an additional multipath component of the two or more separate multipath components; summing results of the differential products of the at least one multipath component and the additional multipath component; and obtaining the frequency offset from a phase of the sum of the results of the differential products.