MAINTENANCE OF THE PERFORMANCE QUALITY OF A WIDE BAND SYSTEM IN THE PRESENCE OF NARROW BAND INTERFERENCE.

摘要

A device for suppressing narrowband interference (21) in a broadband telecommunications system, said system being usable in a broadband band (10), comprising: means for quickly analyzing said broadband band (10) with respect to signal power levels in specified narrow frequency bands (21) of the broad frequency band and detecting said narrow band signal power levels received within said specified bands; means for obtaining an average composite broadband power level from said narrowband signal power levels by determining an average power level of at least some of said narrowband signal power levels; means for using said average composite broadband power level to obtain an adaptive threshold for identifying said narrowband interference; and means for adjusting one or more notch filters (43) to suppress said identified narrowband interference.