Patent ID: 8792372
Filing Date: 2014-07-29
Classification: H04L,H04W

Abstract:
1. A method for communications in a network with a predetermined signal bandwidth, having at least one reference device and at least one non-reference device, comprising: (a) sending a downlink-pilot signal via a downlink channel from said non-reference device to said reference device, (b) generating a downlink-channel estimate at said reference device from said downlink-pilot signal, (c) sending a first uplink-pilot signal via an uplink pilot channel from said reference device to said non-reference device, (d) generating an uplink-channel estimate at said non-reference device from said uplink-pilot signal, (e) sending a plurality of estimates of values of a function of the downlink-channel phase from said reference device to said non-reference device via an uplink data channel, (f) modeling the carrier-phase difference (CPD) between said non-reference device and said reference device as a CPD function of the frequency over said predetermined signal bandwidth, said function of the frequency being completely characterized by a plurality of characterizing parameters, and (g) determining said CPD by estimating said characterizing parameters of said CPD function of the frequency over said signal bandwidth from said estimates of said values of said function of the downlink-channel phase received by said non-reference device, and from said uplink-channel estimate, whereby said non-reference device has obtained complete knowledge of said CPD over said signal bandwidth.