Patent ID: 9712312
Date: 2017-07-18
CPC Classifications: H04B,H04L

Claim:
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.