05256497

a

05256497 Liu, Hsin-Chin Guo, Xin-Can A passive UHF RFID system with huffman sequence spreading backscatter signals. Floerkemeier, Christian (ed.) et al., The internet of things. First international conference, IOT 2008, Zurich, Switzerland, March 26--28, 2008. Proceedings. Berlin: Springer (ISBN 978-3-540-78730-3/pbk). Lecture Notes in Computer Science 4952, 184-195 (2008). 2008 Berlin: Springer EN passive RFID multiple access Huffman sequences

doi:10.1007/978-3-540-78731-0_12

Summary: At present passive RFID standards, the tag collision problems are solved using time division multiple access technologies, including slotted ALOHA schemes and binary-tree search schemes. In order to accelerate an inventory process, a multiple access scheme that can identify more than one tag simultaneously is necessary. Considering the characteristics of a passive UHF RFID system, a novel passive tag backscatter scheme using Huffman spreading sequences is proposed, which can effectively improve an inventory process. The performances of several studied multiple access schemes are compared. Simulation results validate the performance enhancement of the proposed system.