Massive MIMO mmWave Full Duplex Relay for IAB with Limited Dynamic Range

In-band Full-Duplex (FD) is a promising wireless transmission technology that can revolutionize wireless communications. This paper proposes a novel hybrid beamforming design for a mmWave FD Integrated access and backhaul (IAB) scenario for weighted sum-rate (WSR) maximization. We consider non-ideal circuity for the FD relay modelled with the limited dynamic range (LDR) noise model. The problem under consideration is simplified into two sub-problem, and an alternating optimization mechanism is adopted to update the rate maximizing beam-formers. Simulation results show significant performance gain compared to the traditional mmWave HD IAB scenario. However, the maximum achievable gain results to be strictly limited by the LDR noise variance.