The present disclosure provides methods and systems for mitigating signal noise. In implementations, the systems and methods perform operations including continuously determining an instantaneous power of a signal path. The operations also include determining a dynamic noise threshold by sampling the instantaneous power at different times and selecting a minimum of the instantaneous power sampled during the different times. The operations further include determining that the instantaneous power is less than the dynamic noise threshold. Additionally, the operations include blocking communication from the signal path. Further, the operations include iteratively updating the dynamic noise threshold.