Performance of UWB backscatter modulation in multi-tag RFID scenario using experimental data

Future advanced radio-frequency identification (RFID) systems are expected to provide both identification and high-definition localization of objects with improved reliability and security while maintaining low power consumption and cost. Ultrawide bandwidth (UWB) technology is a promising solution for next generation RFID systems to overcome most of the limitations of current narrow bandwidth RFID technology such as: reduced area coverage, insufficient ranging resolution for accurate localization, sensitivity to interference and scarce multiple access capability. In this paper, the UWB technology is applied to semi-passive RFID relying on backscatter modulation. The potential performance of backscatter RFID communication using UWB signals is investigated in terms of clutter suppression and multiple access capability using both simulated and experimental data.