Title: Mitigation of Phase Noise in Massive MIMO Systems: A Rate-Splitting Approach,
Abstract: This work encompasses Rate-Splitting (RS), providing significant benefits in
multi-user settings in the context of huge degrees of freedom promised by
massive Multiple-Input Multiple-Output (MIMO). However, the requirement of
massive MIMO for cost-efficient implementation makes them more prone to
hardware imperfections such as phase noise (PN). As a result, we focus on a
realistic broadcast channel with a large number of antennas and hampered by the
unavoidable PN. Moreover, we employ the RS transmission strategy, and we show
its robustness against PN, since the sum-rate does not saturate at high
signal-to-noise ratio (SNR). Although, the analytical results are obtained by
means of the deterministic equivalent analysis, they coincide with simulation
results even for finite system dimensions.