Systems and methods for adaptively-tuned digital self-interference cancellation
First Claim
Patent Images
1. A method for adaptively-tuned digital self-interference cancellation comprising:
- at a digital self-interference canceller of a communication system, receiving a digital transmit signal from a transmitter of the communication system;
receiving a transform configuration of the digital self-interference canceller;
generating a digital self-interference cancellation signal from the digital transmit signal based on the transform configuration;
combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal;
generating a composite residue signal from the digital residue signal and the digital transmit signal;
wherein the composite residue signal is non-identical to the digital residue signal; and
updating the transform configuration based on the composite residue signal.
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Abstract
A method for adaptively-tuned digital self-interference cancellation includes generating a digital self-interference cancellation signal from a digital transmit signal based on a transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; generating a composite residue signal from the digital residue signal and the digital transmit signal; and updating the transform configuration based on the composite residue signal.
195 Citations
21 Claims
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1. A method for adaptively-tuned digital self-interference cancellation comprising:
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at a digital self-interference canceller of a communication system, receiving a digital transmit signal from a transmitter of the communication system; receiving a transform configuration of the digital self-interference canceller; generating a digital self-interference cancellation signal from the digital transmit signal based on the transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; generating a composite residue signal from the digital residue signal and the digital transmit signal;
wherein the composite residue signal is non-identical to the digital residue signal; andupdating the transform configuration based on the composite residue signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for adaptively-tuned digital self-interference cancellation comprising:
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at a digital self-interference canceller of a communication system, receiving a digital transmit signal from a transmitter of the communication system; receiving a transform configuration of the digital self-interference canceller; generating a digital self-interference cancellation signal from the digital transmit signal based on the first transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; generating a composite residue signal from the digital residue signal and the digital transmit signal;
wherein the composite residue signal is non-identical to the digital residue signal; andgenerating an updated transform configuration in a frequency domain based on the composite residue signal; modifying the updated transform configuration in the frequency domain according to a transform modification configuration; converting the modified updated transform configuration to a time domain; and updating the transform configuration based on the time-domain-converted modified updated transform configuration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification