2021/11/02 by Romain Fara, Fara, Romain, Dinh-Thuy Phan-Huy +13
Engineering · #Advanced Wireless Communication Technologies #Antenna Design and Analysis #Energy Harvesting in Wireless Networks #FOS: Electrical engineering #Indoor and Outdoor Localization Technologies #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2111.02401
openalex publication_date 2021/11/02 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28
Ambient backscatter communication is an emerging and promising low-energy\ntechnology for the Internet of Things. In such a system, a tag sends a binary\nmessage to a reader by backscattering a radio frequency signal generated by an\nambient source. The tag can operate without battery and without generating\nadditional radio waves. However, the tag-to-reader link suffers from the\nsource-to-reader interference. In this paper, we propose a polarization-based\nreconfigurable antenna in order to improve the robustness of the tag-to-reader\nlink against the source-to-reader direct interference. More precisely, we\ncompare different types of tags' antennas, different tags' encoding schemes,\nand different detectors at the reader. By using analysis, numerical\nsimulations, and experiments, we show that a polarization-based reconfigurable\ntag with four polarization directions significantly outperforms a\nnon-reconfigurable tag, and provides almost the same performance as an ideal\nreconfigurable tag with a large number of reconfigurable polarization patterns.\n