Demo abstract: Full-duplex with a compact frequency domain equalization-based RF canceller

Abstract

This demonstration presents a practical real-time full-duplex wireless link consisting of two full-duplex transceivers. Our prototyped full-duplex transceiver contains a custom-designed RF self-interference canceller and a National Instruments (NI) Universal Software Radio Peripheral (USRP). The discrete-component-based RF self-interference canceller emulates a compact RFIC implementation, which uses programmable bandpass filters to achieve wideband cancellation through the technique of frequency domain equalization. We demonstrate self-interference suppression across the antenna, RF, and the digital domains through the NI LabVIEW interface.