Received Signal Strength Quantization for Secure Indoor Positioning via Fingerprinting

P. Richter, H. Leppakoski, E. S. Lohan, Z. Yang, K. Jarvinen, O. Tkachenko, T. Schneider
2018 2018 8th International Conference on Localization and GNSS (ICL-GNSS)  
The increasingly connected world magnifies the threats to users' location privacy. Encryption protocols offer solutions to privacy concerns, but they are computationally very demanding. A reduction of the bit-length of the Received Signal Strength (RSS) measurements is required for a realistic, privacy-preserving positioning system based on fingerprinting. This paper studies the practical design of quantizers for RSS fingerprinting data and analyses the effect of the quantization on the
more » ... tion on the positioning performance, with several real data sets and positioning algorithms. Our results show that 4-bit quantization deteriorate the accuracy compared to no-quantization case by only 20 cm and that 1-bit approaches (i.e. proximity based positioning) are also feasible for certain applications.
doi:10.1109/icl-gnss.2018.8440910 dblp:conf/icl-gnss/RichterLLYJTS18 fatcat:q27bm7rjd5grzdel4bop5r3czq