Digital interference cancellation for multimedia transmission in full duplex communication link

In this paper, we propose the concept of digital interference cancellation as an effective solution to mitigate the induced self-interference due to energy coupling in full duplex communication (FD) channels. A Least Mean Square (LMS) adaptive digital filter is incorporated at each transmitting/receiving node and the desired signal is obtained by subtracting a reference signal from the received one. For verification purposes, a multimedia signal, specifically, voice, is applied as a received data at a terminal that is in a transmission state with the presence of an additive white Gaussian noise (AWGN). Different examples utilizing audio signals are presented and discussed. The recovered data validates the designed scheme.