System and method for canceling interference in a communication system

A method for canceling interference by a communication device comprising:

• sampling a communication channel to produce a first sampled signal when the signal of interest is present;
• spectrally characterizing noise of the first sampled signal in the time domain by creating autocorrelation characteristics of the first sampled signal;
• sampling the communication channel to produce a second sampled signal when the signal of interest is not present;
• characterizing noise of the second sampled signal in the time domain by creating autocorrelation characteristics of the second sampled signal;
• based upon at least one of a noise characterization of the first sampled signal and a noise characterization of the second sampled signal, generating filter settings;
• and
• filtering the communication channel using the filter settings when the signal of interest is present on the communication channel.

A method for canceling interference on a communication channel by a communication device, the method comprising the steps of:

• sampling the communication channel to produce a sampled signal;
• spectrally characterizing the sampled signal in the time domain across a frequency band of interest to produce a time domain spectral characterization of the sampled signal by creating autocorrelation characteristics of the sampled signal;
• modifying the time domain spectral characterization of the sampled signal to produce a time domain modified spectral characterization;
• generating filter settings in the time domain based upon the time domain modified spectral characterization;
• and
• filtering the communication channel using the filter settings when the signal of interest is present on the communication channel.

A method for canceling interference on a communication channel by a communication device, the method comprising the steps of:

• sampling the communication channel to produce a sampled signal;
• characterizing the sampled signal across a frequency band of interest to produce a plurality of spectral components of the sampled signal;
• categorizing some of the spectral components as noise components;
• categorizing some of the spectral components as signal of interest components;
• categorizing some of the spectral components as interfering signal components;
• generating a noise characterization of the sampled signal based upon at least the noise components;
• generating filter settings based upon at least the noise characterization;
• and
• filtering the communication channel using the filter settings when the signal of interest is present on the communication channel.

A method for canceling interference by a communication device comprising:

• sampling a communication channel to produce a sampled signal, a plurality of interfering signals present in the sampled signal;
• spectrally characterizing the sampled signal across a frequency band of interest to produce a spectral characterization of the sampled signal in the time domain by creating autocorrelation characteristics of the sampled signal, wherein the spectral characterization does not include a signal of interest;
• modifying the spectral characterization of the sampled signal to produce a modified spectral characterization by altering frequency components of the spectral characterization of the sampled signal in anticipation of presence of at least some of the interference;
• generating filter settings based upon the modified spectral characterization;
• and
• filtering the communication channel using the filter settings when the signal of interest is present on the communication channel.

A method for canceling interference by a communication device comprising:

• sampling a communication channel to produce a sampled signal;
• spectrally characterizing the sampled signal across a frequency band of interest to produce a spectral characterization of the sampled signal;
• for at least one iteration:
• generating filter settings based upon the spectral characterization;
• comparing the filter settings to filter setting thresholds;
• and
• when the comparison is unfavorable, modifying the spectral characterization of the sampled signal and performing an additional iteration;
• and
• when the comparison is favorable filtering the communication channel using the filter settings.

A method for canceling interference by a communication device comprising:

• sampling a communication channel to produce a first sampled signal;
• spectrally characterizing the first sampled signal across a frequency band of interest to produce a first spectral characterization;
• determining first filter settings based upon the first spectral characterization that meets a set of constraints based upon first time remaining;
• enacting the first filter settings to filter an incoming signal;
• sampling the communication channel at a second time to produce a second sampled signal;
• spectrally characterizing the second sampled signal across a frequency band of interest to produce a second spectral characterization;
• and
• determining second filter settings using the first filter settings and the second spectral characterization.

A method for characterizing interference by a communication device comprising:

• sampling a communication channel to produce a sampled signal;
• summing frequency components of the sampled signal across a frequency spectrum;
• when a sum of the frequency components of the sampled signal across the frequency spectrum compares favorably to a threshold, storing the sampled signal for further processing;
• and
• when the sum of the frequency components of the sampled signal across the frequency spectrum compares unfavorably to a threshold, discarding the sampled signal.