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This paper studies integrated sensing and communication (ISAC) technology ina full-duplex (FD) uplink communication system. As opposed to the half-duplexsystem, where sensing is conducted in a first-emit-then-listen manner, FD ISACsystem emits and listens simultaneously and hence conducts uninterrupted targetsensing. Besides, impressed by the recently emerging reconfigurable intelligentsurface (RIS) technology, we also employ RIS to improve the self-interference(SI) suppression and signal processing gain. As will be seen, the jointbeamforming, RIS configuration and mobile users' power allocation is adifficult optimization problem. To resolve this challenge, via leveraging thecutting-the-edge majorization-minimization (MM) and penalty-dual-decomposition(PDD) methods, we develop an iterative solution that optimizes all variablesvia using convex optimization techniques. Numerical results demonstrate theeffectiveness of our proposed solution and the great benefit of employing RISin the FD ISAC system.

Joint Beamforming for RIS Aided Full-Duplex Integrated Sensing and Uplink Communication