The time-varying deviations of the phase shifter network (PSN) may cause significant performance degradation in the millimeter-wave (mmWave) multiuser communication system, especially when serving fast-moving users. In this letter, we propose an efficient joint real-time phase shifter network calibration and beam tracking (JRTPSNC-BT) algorithm. In each tracking period, the exploration strategy is determined according to the previously tracked beam directions. Then based on the latest observation and the historical observations, the time-varying channels and the time-varying PSN deviations are jointly tracked and updated. Simulation results show the superiority of our algorithm both in calibration error and spectral efficiency.

中文翻译：

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用于毫米波通信的联合实时移相器网络校准和波束跟踪

移相器网络 (PSN) 的时变偏差可能会导致毫米波 (mmWave) 多用户通信系统的性能显着下降，尤其是在为快速移动的用户提供服务时。在这封信中，我们提出了一种高效的联合实时移相器网络校准和波束跟踪 (JRTPSNC-BT) 算法。在每个跟踪周期内，根据先前跟踪的波束方向确定探索策略。然后基于最新观测和历史观测，联合跟踪和更新时变信道和时变PSN偏差。仿真结果表明了我们的算法在校准误差和频谱效率方面的优越性。