Swarun Kumar

This paper introduces RFIMap, a system that aims to inexpensively characterize the spatial and temporal distribution of RF spectrum occupancy of any indoor space at fine granularity (tens of centimeters). RFIMap builds rich wide-band indoor spectrum occupancy maps using low-cost and batteryfree commodity RFID tags. RFIMap’s spectrum maps have wide-ranging applications such as monitoring ambient interference in smart manufacturing, and smart hospitals.