The localization of iot nodes in indoor scenarios with strong multipath channel components is challenging. All methods using radio signals, such as rss or aoa, are inherently prone to multipath fading. Especially for tof measurements, the low available transmit bandwidth of the used transceiver hardware is problematic. In our previous work on this topic we showed that wideband signal generation on narrowband low-power transceiver chips is feasible without any changes to existing hardware. Together with a fixed wideband receiving anchor infrastructure, this facilitates tdoa and aoa measurements and allows for localization of the fully asynchronously transmitting nodes. In this paper, we present a measurement campaign using a receiver infrastructure based on sdr platforms. This proves the actual usability of the proposed method within the limitations of the bandwidth available in the ism band at 2.4GHz. We use the results to analyze the effects of possible anchor placement schemes and scenario geometries. We further demonstrate how this node-to-infrastructure-based localization scheme can be supported by additional node-to-node rss measurements using a simple clustering approach. In the considered scenario, an overall positioning rmse of 2.19m is achieved.
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