Patent ID: 8886115

Claim:
A method for controlling gain in a wireless repeater, the method comprising: receiving an input signal at a receiving antenna of the repeater, the input signal being a sum of a remote signal to be repeated and a feedback signal resulting from a feedback channel between the receiving antenna and a transmitting antenna, the feedback channel thus forming a feedback loop between the transmitting antenna and the receiving antenna; transmitting an output signal on the transmitting antenna, the output signal being an amplified input signal; computing a gain control metric indicative of a loop gain of the repeater; detecting changes in a signal power of a gain control input signal, the gain control input signal being taken from any point in the feedback loop of the repeater; when a large power swing in the gain control input signal is detected, discarding at least a portion of each gain control metric measurement for a first duration before continuing with computing the gain control metric; and controlling a variable gain of the repeater based on the gain control metric.