Patent ID: 8731005

Claim:
A radio system for relaying packetized radio signals, the radio system comprising: a base band calibration signal generator configured to insert a base band calibration signal into a packetized payload signal, the base band calibration signal being synchronized to a synchronization unit; a calibration unit configured to split the packetized payload signal, thus producing at least one calibrated payload signal, the calibration unit further configured to apply at least one of phase, amplitude and delay changes to the at least one calibrated payload signal; at least one link configured to forward the at least one calibrated payload signal to at least one transmit path; at least one transmit path configured to forward the calibrated payload signal as a transmit signal; a feedback path for feeding back a feedback signal; a calibration signal modulator configured to receive the said base band calibration signal from the said base band calibration signal generator and to provide a calibration signal to the feedback path; a feedback signal demodulator for receiving the feedback signal and for generating a demodulated base band feedback signal; wherein the at least one of phase, amplitude and delay changes are configurable using said base band feedback signal.