On the feasibility of situational awareness in millimeter wave massive MIMO systems
Paper i proceeding, 2020

Situational awareness in wireless networks refers to the availability of information on the states of mobile devices and their propagation environments. Recent studies have shown that the position, orientation, and clock offset of a mobile device can be estimated jointly with a map of reflecting or scattering features in the propagation environment based on the link to a single base station. Yet, it is unknown how important system parameters such as the bandwidth, the number of antennas, and the signal-to-noise ratio affect the estimation accuracy and hence the feasibility of situational awareness. We address this open question by studying the Cramér-Rao lower bound of the joint estimation problem. Particularly, we provide an analytical expression for the corresponding Fisher information matrix and inspect the Cramér-Rao lower bound via numerical simulations. Our results reveal the following insights. First, the reflection loss of objects in the propagation environment has a profound impact on the estimation accuracy of the states of mobile devices and their maps. Second, the massiveness of arrays is a key enabler for accurate state and map estimation and finally, the geometry of the scenario affects the estimation accuracy profoundly.

Författare

Rico Mendrzik

Technische Universität Hamburg-Harburg (TUHH)

Henk Wymeersch

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Gerhard Bauch

Technische Universität Hamburg-Harburg (TUHH)

WSA 2020 - 24th International ITG Workshop on Smart Antennas

24th International ITG Workshop on Smart Antennas, WSA 2020
Hamburg, Germany,

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

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Senast uppdaterat

2021-01-14