Enabling Integrated Sensing and Communication using In-Band Full-Duplex Systems

Abstract

Recently, in-band full-duplex (IBFD) integrated sensing and communication (ISAC) system has drawn much attention for applications such as 6G and vehicle-to-everything communications. In this system, due to the simultaneous reception and transmission, self-interference signals result in a significant impact on the performance and the feasibility of applications. This paper presents a two-stage scheme to recover the returned radar signal in the IBFD-ISAC systems. The self-interference cancellation (SIC) scheme based on the independent component analysis (ICA) algorithm is applied as the first stage. Furthermore, a delay-detecting scheme is employed to extract the returned radar signal. The simulation results verify that the proposed framework can successfully recover the returned radar signal in IBFD-ISAC systems.