Indoor Measurements with Commercial 60 GHz WLAN Components

Konferenz: WSA 2020 - 24th International ITG Workshop on Smart Antennas
18.02.2020 - 20.02.2020 in Hamburg, Germany

Tagungsband: ITG-Fb. 291: WSA 2020

Seiten: 5Sprache: EnglischTyp: PDF

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Hoffmann, Dennis; Fellhauer, Felix; Arnold, Maximilian; ten Brink, Stephan (Institute of Telecommunications, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

The first wave of WLAN products compatible to the IEEE 802.11ad standard promise to enable extreme wireless throughput of up to 1 Gb=s, making the 60GHz spectrum available for consumers. Concerning applicability of those devices, questions on actual physical layer performance in real-world scenarios arise. Among others, maximum achievable throughput, coverage, and standard compatibility can be examined. In this paper, we present measurement results investigating physicallayer performance measures of off-the-shelf 60GHz wireless LAN (WLAN) hardware. In an indoor environment at an intersection of corridors, we consider a measurement scenario consisting of three access-points and a mobile station mounted on top of an automated guided vehicle (AGV), which allows to perform automated measurements within a predefined area. We verify our setup by comparing actual measurements of station (RSSI) and round-trip time (RTT) (i.e. distance between devices) with reference data. Results show, that coverage even under challenging non line-of-sight (NLOS) conditions can be achieved in the investigated scenario. The highest modulation and coding scheme (MCS), corresponding to a physical layer (PHY) bit-rate of 2310Mb=s, can be achieved in approx. 80% of locations. Measurement results of RTT accuracy, show that timing measurements are prone to misalignment of devices, but can achieve an accuracy with a standard deviation below 20mm, when aligned properly. Further, user localization based on trilateration using three access-points can achieve accuracy below 1m.