CPC H04W 56/0035 (2013.01) [H04W 56/005 (2013.01); H04W 4/023 (2013.01)] | 20 Claims |
1. A method for measuring a distance between a first communications device including a first local oscillator and a second communications device including a second local oscillator, the method comprising:
generating N phase values by converting N corresponding samples of a received signal from a Cartesian representation to a polar representation including the N phase values;
unwrapping the N phase values by combining each of the N phase values with a corresponding multiple of 2π to generate N unwrapped phase values, where N is an integer greater than one;
averaging the N unwrapped phase values to generate an average phase value; and
wrapping the average phase value by performing a modulo 2π operation on the average phase value to generate a final phase measurement of the first local oscillator with respect to the second local oscillator.
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