Method and apparatus for adaptive non-linear self-jamming interference cancellation

摘要

Certain embodiments of the disclosure propose a method for cancelling co-channel interference (self-jamming) generated by nonlinearities in the radio-frequency (RF) front-end devices. The proposed method utilizes an adaptive non-linear filter to generate a distorted version of the transmitted signal. The self-jamming interference may be mitigated utilizing the distorted signal through adaptive cancellation.

主权项

1. A method, comprising:
generating a signal to be transmitted on a first frequency band; constructing a distorted version of the generated signal by applying an adaptive non-linear filter to a baseband portion of the generated signal, wherein coefficients of the adaptive non-linear filter are generated by minimizing a MSE (Minimum Square Error) cost function; transmitting the generated signal on the first frequency band; receiving a signal on a second frequency band, the received signal being corrupted by self-jamming interference, wherein the self-jamming interference is caused by any type of non-linearities generated by transmit and receive chains; and subtracting the distorted version of the generated signal from the received signal to remove the self-jamming interference.