Digital radio frequency interference canceller
First Claim
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1. A method for mitigating radio frequency (RF) interference in a multicarrier modulation system, said method comprising the operations of:
- (a) obtaining frequency domain data associated with a frequency band;
(b) identifying a restricted frequency sub-band within the frequency band;
(c) estimating a frequency of the RF interference within the restricted frequency sub-band;
(d) estimating the RF interference in accordance with a frequency domain model for the RF interference and the estimated frequency of the RF interference; and
(e) removing the estimated RF interference from the frequency domain data.
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Abstract
Disclosed are radio frequency (RF) interference cancellation techniques that effectively estimate RF interference to the data signals being received using a frequency domain model, and then remove the estimated RF interference from the received data signals. Improved techniques for digitally filtering multicarrier modulation samples to reduce sidelobe interference due to the RF interference are also disclosed.
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18 Claims
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1. A method for mitigating radio frequency (RF) interference in a multicarrier modulation system, said method comprising the operations of:
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(a) obtaining frequency domain data associated with a frequency band; (b) identifying a restricted frequency sub-band within the frequency band; (c) estimating a frequency of the RF interference within the restricted frequency sub-band; (d) estimating the RF interference in accordance with a frequency domain model for the RF interference and the estimated frequency of the RF interference; and (e) removing the estimated RF interference from the frequency domain data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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