Localization, Mapping, and Synchronization in 5G Millimeter Wave Massive MIMO Systems

The availability of position and clock information on transmitters and receivers as well as information on their propagation environments will be used to aid communications in future fifth generation millimeter wave massive multipleinput multiple-output communication systems. In this paper, we introduce a model that describes the statistical dependency between channel state information and the position, orientation, and clock offset of a user equipment along with the locations of features in the propagation environment. Based on this model, we develop a method that can provide situational awareness to future communication systems by reliably inferring the states of a user equipment as well as a map of its propagation environment. Numerical results show that the proposed method can determine the positions of an unknown and time-varying number of features in the propagation environment and, at the same time, estimate the position and clock offset of a user equipment.