Systems and methods for near band interference cancellation
First Claim
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1. A method for self-interference canceller tuning for a near band radio comprising:
- receiving, in a first frequency band, an RF transmit signal of the near band radio;
receiving, in a second frequency band, an RF receive signal of the near band radio;
retuning a transmitter of the near band radio from the first frequency band to the second frequency band;
transmitting a weak signal on the second frequency band;
retuning the transmitter of the near band radio from the second frequency band to the first frequency band;
generating knowledge of a receive channel based on the weak signal;
generating a self-interference cancellation signal from the RF transmit signal based on a set of configuration parameters;
wherein generating the self-interference cancellation signal comprises combining a set of filtered, scaled, and delayed versions of the RF transmit signal;
combining the self-interference cancellation signal with the RF receive signal to create a composite receive signal; and
adapting the set of configuration parameters based on the composite receive signal;
wherein adapting the set of configuration parameters based on the composite receive signal comprises adapting scaling factors and delays;
wherein the first frequency band and second frequency band are non-identical.
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Abstract
A method for self-interference canceller tuning for a near band radio includes receiving, in a first frequency band, an RF transmit signal of the near band radio; receiving, in a second frequency band, an RF receive signal of the near band radio; generating a self-interference cancellation signal from the RF transmit signal based on a set of configuration parameters; combining the self-interference cancellation signal with the RF receive signal to create a composite receive signal; and adapting the set of configuration parameters based on the compo-site receive signal.
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Citations
12 Claims
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1. A method for self-interference canceller tuning for a near band radio comprising:
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receiving, in a first frequency band, an RF transmit signal of the near band radio; receiving, in a second frequency band, an RF receive signal of the near band radio; retuning a transmitter of the near band radio from the first frequency band to the second frequency band; transmitting a weak signal on the second frequency band; retuning the transmitter of the near band radio from the second frequency band to the first frequency band; generating knowledge of a receive channel based on the weak signal; generating a self-interference cancellation signal from the RF transmit signal based on a set of configuration parameters;
wherein generating the self-interference cancellation signal comprises combining a set of filtered, scaled, and delayed versions of the RF transmit signal;combining the self-interference cancellation signal with the RF receive signal to create a composite receive signal; and adapting the set of configuration parameters based on the composite receive signal;
wherein adapting the set of configuration parameters based on the composite receive signal comprises adapting scaling factors and delays;wherein the first frequency band and second frequency band are non-identical. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification