Patent ID: 8630361
Filing Date: 2014-01-14
Classification: G01S,H04L,H04W

Abstract:
1. An apparatus comprising: at least a first transformer configured to transform a first signal formed from a set of multiple orthogonal subcarriers and received via a first path, from a time domain to a frequency domain and produce for each of a plurality of the multiple orthogonal subcarriers a respective first coefficient; and a second transformer configured to transform a second signal formed from the set of multiple orthogonal subcarriers and received via a second path, different from the first path, from a time domain to a frequency domain and produce for each of a plurality of the multiple orthogonal subcarriers a respective second coefficient; and comprising processing circuitry configured to process at least the plurality of first coefficients and the plurality of second coefficients to determine at least one angle providing a bearing for the apparatus in dependence upon at least the relative positions of the first and second antennas.