Patent ID: 8874027

Claim:
A method for controlling gain in a wireless repeater implementing echo cancellation, 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; transmitting an output signal on the transmitting antenna, the output signal being an amplified input signal with echo cancellation; determining a signal-to-interference-noise-ratio (SINR) of the input signal; determining a signal-to-interference-noise-ratio (SINR) of the output signal; adjusting the gain of the repeater to optimize an achievable data rate and a coverage area of the repeater; decreasing the repeater gain to increase the data rate and increase the achievable SINR of the output signal, the coverage area being reduced; and increasing the repeater gain to decrease the data rate and decrease the achievable SINR of the output signal, the coverage area being increased.