In massive MIMO systems, phase noise can spoil the performance of the usual receiver techniques. The problem arises because of the aging of phase-noise information based on pilots. In this paper, in a realistic 5G uplink scenario, we quantify the impact of information aging and we propose an iterative receiver based on expectation-maximization (EM). Simulation results show that the iterative receiver is robust to information aging related to phase noise.

翻译：在大规模MIMO系统中，相位噪声可能破坏常规接收机技术的性能。该问题源于基于导频的相位噪声信息老化。本文在真实的5G上行链路场景中，量化了信息老化的影响，并提出了一种基于期望最大化（EM）的迭代接收机。仿真结果表明，该迭代接收机对相位噪声相关的信息老化具有鲁棒性。