Matthias Mahlig- Technology at u-blox
Matthias Mahlig
- Technology at u-blox
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8
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Publications
Publications (8)
In this paper, we present a novel Deep Neural Network-based indoor localization method that estimates the position of a Bluetooth Low Energy (BLE) transmitter (tag) by using the received signals’ characteristics at multiple Anchor Points (APs). We use the received signal strength indicator (RSSI) value and the in-phase and quadrature-phase (IQ) com...
Generic Angle of Arrival methods for indoor positioning are highly affected by specific antenna and environment scenarios through design impurities or multipathcomponent propagations. Here we acquired a large dataset of four different antenna designs in three different measurement environments with >140000 snapshots obtained from Bluetooth 5.1 rece...
Generic Angle of Arrival methods for indoor positioning are highly affected by specific antenna and environment scenarios through design impurities or multipathcomponent propagations. Here we acquired a large dataset of four different antenna designs in three different measurement environments with >140000 snapshots obtained from Bluetooth 5.1 rece...
For Wireless Sensor Networks (WSN) the limited number of active Bluetooth slaves in a piconet is a constraint. Scatternet topologies are described in the Bluetooth specification for use cases requiring many devices. However, scatternet related aspects are not addressed in detail in the Bluetooth specification and research work was primarily evaluat...
This paper introduces a new method of signal acquisition, processing and data representation for improved system performance in Frequency Modulated Continuous Wave (FMCW) radar systems. The method utilizes synchronization between ramp generation and baseband signal conversion to significantly improve target recognition in processing algorithms. Eve...
PSSS (Parallel Sequence Spread Spectrum) [1] technology is the basis for the PHY of the new IEEE802.15.4-2006 standard with the enhancement of the data rate from 20 kbps to 250 kbps for the European area. Robustness against multipath fading and interference is also enhanced and makes the sub 1 GHz PHY highly attractive. Compared to 2.4GHz solutions...
