A passive UHF RFID system with Huffman sequence spreading backscatter signals

Authors:
Hsin-Chin Liu;Xin-Can Guo
Affiliations:
National Taiwan University of Science and Technology, Taipei, Taiwan;National Taiwan University of Science and Technology, Taipei, Taiwan
Venue:
IOT'08 Proceedings of the 1st international conference on The internet of things
Year:
2008

Citing 2
Cited 1

A Technique for Simultaneous Multiple Tag Identification

AUTOID '05 Proceedings of the Fourth IEEE Workshop on Automatic Identification Advanced Technologies
Orthogonal Set of Huffman Sequences and Its Application to Suppressed-Interference Quasi-Synchronous CDMA System*This paper was presented at the Second International Workshop on Sequence Design and Applications in Communications (IWSDA'05), in Shimonoseki, Japan, during October 10--14, 2005.

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

A Review of Tags Anti-collision and Localization Protocols in RFID Networks

Journal of Medical Systems

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Abstract

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.