Self-Interference Cancellation and Data Detection for Full-Duplex Communications

This paper studies the joint digital self-interference (SI) cancellation and data detection in an orthogonal-frequency-division-multiplexing (OFDM) full-duplex (FD) system, consisting the effects of phase noise. In particular, a two-stage scheme is proposed to estimate the SI channel state and detect the data from the remote transmitter. Based on the proposed scheme, the SI cancellation and the data detection abilities are analyzed, and the expression for the bit-error-rate (BER) is derived. Simulation results indicate that the derived theoretical BER performance is highly consistent with the simulations.