Electronic device for removing self-interference signal and method of operating the same

A method of operating a wireless communication device, the method comprising:

• detecting that a transmission radio frequency (RF) chain has transited from an inactive state to a first active state, the transmission RF chain being configured to transmit a radio signal;
• determining whether to detect an updated value of a phase of a self-interference signal in response to the detecting;
• and
• modifying a weight vector of an adaptive filter corresponding to the self-interference signal based on the updated value of the phase or a previous value of the phase.

A wireless communication device comprising:

• a transmission radio frequency (RF) chain configured to transmit a radio signal;
• and
• processing circuitry configured to cause the wireless communication device to,
• detect that the transmission RF chain has transited from an inactive state to a first active state,
• determine to detect an updated value of a phase of a self-interference signal in response to detecting that the transmission RF chain has transited from the inactive state to the first active state,
• detect the updated value of the phase of the self-interference signal in response to the determination, and
• modify a weight vector of an adaptive filter corresponding to the self-interference signal based on the updated value of the phase of the self-interference signal.