Method and apparatus for an adaptive filter architecture
First Claim
1. A method, comprising:
- identifying, by a system including a processor, an available frequency band in a radio frequency spectrum, wherein a portion of the available frequency band is subject to undesirable radio frequency interference;
selecting, by the system, the available frequency band for engaging in communications independent of there being interference in the available frequency band;
determining, by the system, a signal strength for each of a plurality of narrowband channels in the available frequency band;
determining, by the system, a correlation factor for at least a portion of the plurality of narrowband channels by correlating the signal strength for each of the plurality of narrowband channels;
identifying, by the system, from the correlation factor a narrowband channel of the plurality of narrowband channels that contains narrowband interference; and
generating, by the system, first tuning coefficient data for configuring a filter for filtering the narrowband interference in the narrowband channel for communicating in the narrowband channel, wherein the generating of the tuning coefficient data is according to first information received from a first signal sampler, wherein the first information is associated with input signals to the filter; and
generating, by the system, second tuning coefficient data for configuring the filter to be adjusted for filtering the narrowband interference in the narrowband channel, wherein the generating of the second tuning coefficient data is according to second information received from a second signal sampler, wherein the second information is associated with output signals from the filter,wherein the tuning coefficient data enables the filter to pass first radio signals associated with a first wireless protocol and to filter second radio signals associated with a second wireless protocol, andwherein the filtering of the narrowband interference based on the first tuning coefficient is independent of the first wireless protocol.
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Abstract
A system that incorporates teachings of the subject disclosure may include, for example, a method for scanning a radio frequency spectrum for an available frequency band, selecting an available frequency band in the radio frequency spectrum even if the available frequency band is affected by radio frequency interference, measuring a signal strength in portions of the available frequency band, correlating the signal strength of each portion to generate a correlation factor, detecting radio frequency interference in the available frequency band according to the correlation factor, and generating tuning coefficient data to cause the filter apparatus to substantially suppress the radio frequency interference in the available frequency band. Other embodiments are disclosed.
176 Citations
20 Claims
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1. A method, comprising:
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identifying, by a system including a processor, an available frequency band in a radio frequency spectrum, wherein a portion of the available frequency band is subject to undesirable radio frequency interference; selecting, by the system, the available frequency band for engaging in communications independent of there being interference in the available frequency band; determining, by the system, a signal strength for each of a plurality of narrowband channels in the available frequency band; determining, by the system, a correlation factor for at least a portion of the plurality of narrowband channels by correlating the signal strength for each of the plurality of narrowband channels; identifying, by the system, from the correlation factor a narrowband channel of the plurality of narrowband channels that contains narrowband interference; and generating, by the system, first tuning coefficient data for configuring a filter for filtering the narrowband interference in the narrowband channel for communicating in the narrowband channel, wherein the generating of the tuning coefficient data is according to first information received from a first signal sampler, wherein the first information is associated with input signals to the filter; and generating, by the system, second tuning coefficient data for configuring the filter to be adjusted for filtering the narrowband interference in the narrowband channel, wherein the generating of the second tuning coefficient data is according to second information received from a second signal sampler, wherein the second information is associated with output signals from the filter, wherein the tuning coefficient data enables the filter to pass first radio signals associated with a first wireless protocol and to filter second radio signals associated with a second wireless protocol, and wherein the filtering of the narrowband interference based on the first tuning coefficient is independent of the first wireless protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system, comprising:
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an antenna; a filter apparatus; a digital radio tuner; a first signal sampler positioned between the antenna and the filter apparatus, the first signal sampler obtaining first information associated with input signals to the filter apparatus; a second signal sampler positioned between the filter apparatus and the digital radio tuner, the second signal sampler obtaining second information associated with output signals from the filter apparatus; and a circuit coupled to the filter apparatus and the first and second signal samplers, wherein execution of instructions by the circuit causes the circuit to perform operations comprising; measuring a signal strength in portions of an available frequency band in a radio frequency spectrum; correlating the signal strength of each portion to generate a correlation factor; detecting radio frequency interference in the available frequency band according to the correlation factor; generating first tuning coefficient data for configuring the filter apparatus for filtering the radio frequency interference in the available frequency band, wherein the generating of the first tuning coefficient data is according to the first information received from the first signal sampler; and generating second tuning coefficient data for configuring the filter apparatus to be adjusted for filtering the radio frequency interference in the available frequency band, wherein the generating of the second tuning coefficient data is according to the second information received from the second signal sampler, wherein the tuning coefficient data enables the filter apparatus to pass first radio signals associated with a first wireless protocol and to filter second radio signals associated with a second wireless protocol, and wherein the filtering of the radio frequency interference based on the first tuning coefficient is independent of the first wireless protocol. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A machine readable storage device comprising instructions, which responsive to being executed by a processor, cause the processor to perform operations comprising:
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measuring a signal strength in portions of an available frequency band in a radio frequency spectrum; correlating the signal strength of each portion to generate a correlation factor; detecting radio frequency interference in the available frequency band according to the correlation factor; generating first tuning coefficient data for configuring a filter apparatus for filtering the radio frequency interference in the available frequency band, wherein the generating of the first tuning coefficient data is according to first information received from a first signal sampler, wherein the first information is associated with input signals to the filter apparatus; generating second tuning coefficient data for configuring the filter apparatus to be adjusted for filtering the radio frequency interference in the available frequency band, wherein the generating of the second tuning coefficient data is according to second information received from a second signal sampler, wherein the second information is associated with output signals from the filter apparatus; and receiving a master clock signal which enables synchronization of the processor, wherein the generating of the first and second tuning coefficient data is according to a schedule based on the synchronization of the processor with a digital tuner, wherein the first tuning coefficient data and the second tuning coefficient data enables the filter apparatus to pass first radio signals associated with a first wireless protocol and to filter second radio signals associated with a second wireless protocol, and wherein the filtering of the radio frequency interference based on the first tuning coefficient is independent of the first wireless protocol. - View Dependent Claims (20)
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Specification