Patent ID: 9001919
Filing Date: 2015-04-07
Classification: H04B,H04L

Abstract:
1. A communications system comprising: a first receiver circuit connected with a transmission channel and configured to determine a signal power of a first communications signal received over the transmission channel, the first receiver circuit including a noise detection circuit configured to measure noise above a predefined noise level in the communications signal during reception of the communications signal; a first transmitter circuit connected with the transmission channel and configured to transmit the first or a second communications signal, a gain of the communications signal which is output by the first transmitter circuit being controllable; a second transmitter circuit configured to transmit a gain control signal separate from the first and second communications signals over the transmission channel; and a first control circuit configured to control the gain of the first transmitter circuit in response to the gain control signal to generate a signal power that ensures safe reception of the communications signal and facilitates, during reception of the first communications signal, a measurement of noise of the predefined noise level.