Receiver-side beamforming to isolate channel perturbations from a human target in a device-free setting

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu




We present an approach to isolate the angular response of a human on a receiver-side beamformer when the line of sight is several magnitudes stronger than the human response. The solution is implemented in a 5G testbed using a software-defined radio (SDR) platform. Beamforming with SDRs faces the challenge to train the beamformer to different azimuth angles. We present an algorithm to generate the steering vectors for all azimuth angles from a few training points amidst imprecise prior information. Furthermore, we detect a human and estimate the direction from strong signal perturbations towards that angle. Experiments for a person performing in-place activities in a semi-Anechoic chamber show a detection accuracy of 100% and a maximum median direction of arrival error of 40.


OtsikkoDFHS 2019 - Proceedings of the 1st ACM Workshop on Device-Free Human Sensing
TilaJulkaistu - 10 marraskuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaACM Workshop on Device-Free Human Sensing - New York, Yhdysvallat
Kesto: 10 marraskuuta 201910 marraskuuta 2019
Konferenssinumero: 1


WorkshopACM Workshop on Device-Free Human Sensing
KaupunkiNew York

ID: 40177704