Method and device for maintaining the performance quality of a communication system in the presence of narrow band interference
AssigneeISCO International, LLC
InventorsCharles E. Jagger, Mark N. Willetts, Micolino Tobia
Life of this patent
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Abstract
A system that incorporates teachings of the subject disclosure may include, for example, a method for analyzing a wide frequency band with respect to signal power levels in specified narrow frequency bands, detecting narrow band signal power levels received in the specified narrow frequency bands, determining an average composite wideband power level from the narrow band signal power levels, determining an adaptive threshold, detecting narrow band interference according to the adaptive threshold, and configuring a variable bandwidth of a filter to substantially suppress the detected narrow band interference. Other embodiments are disclosed.
Claims19
A method, comprising:
- analyzing a wide frequency band with respect to signal power levels in specified narrow frequency bands;
- detecting narrow band signal power levels received in the specified narrow frequency bands;
- determining an average wideband power level from the narrow band signal power levels;
- determining an adaptive threshold from the narrow band signal power levels for detecting narrow band interferers in the wide frequency band,
- wherein the adaptive threshold is calculated without utilizing a subset of signal power levels of the narrow band signal power levels, and
- wherein the subset of signal power levels corresponds to a number of channels that equals a number of notch modules of a filter for filtering narrow band interferers;
- detecting narrow band interference according to the adaptive threshold;
- and
- configuring a variable bandwidth of the filter to suppress at least a portion of the detected narrow band interference.
A device, comprising:
- a filter having a variable bandwidth;
- and
- a circuit coupled to the filter, wherein execution of instructions by the circuit cause the circuit to perform operations comprising:
- measuring power levels in narrow frequency bands from signals provided by a radio frequency receiver;
- determining a wideband power level from at least a portion of the power levels in the narrow frequency bands;
- determining a threshold from the at least a portion of the power levels in the narrow frequency bands, wherein the threshold is calculated without utilizing a subset of signal power levels of the at least a portion of the power levels in the narrow frequency bands, wherein the subset of signal power levels corresponds to a number of channels that equals a number of notch modules of the filter for filtering narrow band interference;
- detecting from the signals narrow band interference based on the threshold;
- and
- modifying the variable bandwidth of the filter to suppress at least a portion of the detected narrow band interference.
A memory device, comprising instructions which when executed by a circuit cause the circuit to perform operations, comprising:
- scanning at least some narrowband channels disposed in a wideband communication signal;
- determining signal strengths in the at least some of the narrowband channels;
- determining a threshold based on the signal strengths in the at least some of the narrowband channels,
- wherein the threshold is calculated without utilizing a subset of signal power levels of the at least some narrowband channels, wherein the subset of signal power levels corresponds to a number of channels that equals a number of notch modules of a filter for filtering narrow band interference;
- detecting narrow band interference in the wideband communication signal according to the threshold;
- and
- modifying a variable bandwidth of the filter to suppress at least a portion of the detected narrow band interference.
Dependencies are inferred from the claim text.