A repeater system arranged to mediate traffic between a network transceiver and a user transceiver in a wireless communication system, the repeater comprising: a network unit (102,300,600) arranged to maintain a network link with the network transceiver, a user unit (104,400,700) arranged to maintain a user link with the user transceiver; and a two-way communication pathway between the network unit and the user unit, the two-way communication pathway comprising a first processor of the user unit and a second processor of the network unit, characterized in that the first and second processors are for: generating a plurality of replicas of a signal received from the network transceiver on a downlink path or from the user transceiver on an uplink path respectively, and for transmitting the one or more replicas of the signal wirelessly on a hop between the network unit and the user unit along with one or more bi-directional control channels, each generated replica being transmitted on a different frequency, wherein the plurality of replicas of the signal each comprise a combination of a pilot signal with an original signal either received at the network unit from the network transceiver on the downlink path or received at the user unit from the user transceiver on the uplink path, and wherein an amplitude of the pilot signal is based on an estimated signal strength indication for the original signal. a network unit (102,300,600) arranged to maintain a network link with the network transceiver, a user unit (104,400,700) arranged to maintain a user link with the user transceiver; and a two-way communication pathway between the network unit and the user unit, the two-way communication pathway comprising a first processor of the user unit and a second processor of the network unit, characterized in that the first and second processors are for: generating a plurality of replicas of a signal received from the network transceiver on a downlink path or from the user transceiver on an uplink path respectively, and for transmitting the one or more replicas of the signal wirelessly on a hop between the network unit and the user unit along with one or more bi-directional control channels, each generated replica being transmitted on a different frequency, wherein the plurality of replicas of the signal each comprise a combination of a pilot signal with an original signal either received at the network unit from the network transceiver on the downlink path or received at the user unit from the user transceiver on the uplink path, and wherein an amplitude of the pilot signal is based on an estimated signal strength indication for the original signal. generating a plurality of replicas of a signal received from the network transceiver on a downlink path or from the user transceiver on an uplink path respectively, and for transmitting the one or more replicas of the signal wirelessly on a hop between the network unit and the user unit along with one or more bi-directional control channels, each generated replica being transmitted on a different frequency, wherein the plurality of replicas of the signal each comprise a combination of a pilot signal with an original signal either received at the network unit from the network transceiver on the downlink path or received at the user unit from the user transceiver on the uplink path, and wherein an amplitude of the pilot signal is based on an estimated signal strength indication for the original signal.