US Patent 8027285 Method to eliminate frequency offset introduced in a network

A remote, a communications system, and a method in which the remote communicates with another remote via a repeater and also communicates with a hub. The remote includes a transceiver configured to receive a signal from the another remote, a measuring unit configured to measure a first offset, and a calculation unit configured to calculate a frequency offset for the signal based on (i) the first offset measured at the measuring unit, and (ii) a second offset measured at the hub.