Simultaneous single-band duplex system using self-interference cancellation

In this paper, we propose a simultaneous single-band duplex system using RF cancellation and digital cancellation. Also, we propose a method for digital cancellation. The proposed system has estimation frame for effective self-interference channel estimation in time-domain. The proposed system calculates signal power for selection of optimal coefficient after digital cancellation. Then, the proposed system selects coefficient of minimum signal power. Further, the proposed system uses LDPC code to minimize the effects of remaining self-interference signal. The proposed system shows that the SSD (simultaneous single-band duplex) communication is possible in static self-interference channel.