Patent ID: 8363757

Claim:
A device in a communication system, the communication system using one of OFDM, NBFDM, DMT, FDMA and TDMA, the communication system including a plurality of remote transceiver units and a central transceiver unit disposed remotely from the plurality of remote transceiver units, the plurality of remote transceiver units operable to communicate in a continuous bi-directional manner for direct exchange of information with the central transceiver unit, the device for providing that each of the plurality of remote transceiver units communicate with the central transceiver unit using a common frequency, the device comprising: means for detecting, responsive to a continuous comparison of received and detected signals in each of the remote transceiver units, a comparative offset between common frequency references used locally by the remote transceiver units and the common frequency used by the central transceiver unit in at least one first signal transmitted between the central and the remote transceiver units, wherein the common frequency reference is a carrier frequency in a first remote transceiver unit and a sampling frequency in a second remote transceiver unit; means for adjusting the common frequency reference in each of the remote transceiver units in accordance with the offset in at least one second signal to be transmitted between the remote and central transceiver units to correct for an error in the common frequency reference, so that effects of the offset in each of the remote transceiver units will be substantially reduced in preemptive manner, the second signal being in substantial frequency lock with the common frequency.