Patent ID: 8934860
Filing Date: 2015-01-13
Classification: H04B

Abstract:
1. A method for detecting an ingress of a short-wave radio signal in a power line communication system comprising: determining a strength of a common-mode signal at a frequency of the power line communication system during a time period when no communication in the power line communication system at this frequency takes place, wherein the power line communication system includes at least two conductors, and the common-mode signal is a signal that is present with one sign and in-phase on all of the conductors; and detecting the ingress based on the strength of the common-mode signal being above a predetermined threshold, the method further including determining a strength of at least one of differential mode signals between phase line and neutral line, differential mode signals between phase line and protective earth line, and differential mode signals between neutral line and protective earth line at the frequency of the power line communication system during the time period when no communication in the power line communication system at this frequency takes place, wherein the detecting of the ingress is further based on a comparison of the strength of the at least one differential mode signals to the strength of the common mode signal.