Patent ID: 9609612
Date: 2017-03-28
CPC Classifications: H04J,H04L,H04W

Claim:
1. A method of determining a frequency offset between a transmitting node and a receiving node, the method comprising: determining a maximum resolvable frequency offset range based on a first resolvable frequency offset for a first channel and a second resolvable frequency offset for a second channel; determining two or more offset regions within the maximum resolvable frequency offset range; computing, for each offset region, a first hypothesized frequency offset for the first channel and a second hypothesized frequency offset for the second channel; computing, for each offset region, a first error metric as a function of the first hypothesized frequency offset for the first channel; computing, for each offset region, a second error metric as a function of the second hypothesized frequency offset for the second channel; selecting the first hypothesized frequency offset corresponding to the offset region having the lowest first error metric, as final frequency offset estimate for the first channel; selecting the second hypothesized frequency offset corresponding to the offset region having the lowest second error metric, as final frequency offset estimate for the second channel.