Patent ID: 8879674
Filing Date: 2014-11-04
Classification: H04B,H04L

Abstract:
1. A method comprising: receiving a data communications signal; correlating the received signal with a predetermined bit sequence, at a one instant in time, over a plurality of predetermined frequency offsets; and performing a signal parameter estimation function, to determine a highest correlation value, for the received signal over the predetermined frequency offsets, based on a matrix of final correlation factors; wherein the correlation of the received signal with the predetermined bit sequence, over the plurality of predetermined frequency offsets, comprises: wherein the correlation of the received signal with the predetermined bit sequence is further performed over a plurality of instants in time, resulting in a matrix of final correlation factors over the predetermined frequency offsets and over the instants in time, and wherein the correlation of the received signal with the predetermined bit sequence, over the plurality of predetermined frequency offsets and over the plurality of instants in time, is reflected as: where x reflects a sequence of symbols of the predetermined bit sequence, y reflects a sequence of symbols of the received signal, j reflects a time index, k reflects a frequency index, l reflects the number of sub-segments of the received signal, L reflects a length of each of the sub-segments of the received signal, and F reflects a frequency increment of the predetermined frequency offsets.