Talks and Poster Presentations (with Proceedings-Entry):
M. Mayer, N. Görtz, J. Kaitovic:
"RFID Tag Acquisition via Compressed Sensing";
Poster: 2014 IEEE International Conference on RFID-Technologies and Applications (RFID-TA),
- 09-09-2014; in: "2014 IEEE RFID Technology and Applications (RFID-TA) Conference",
RFID Technology and Applications Conference (RFID-TA), 2014 IEEE,
We focus on simultaneously identifying a small subset of radio frequency identification tags out of a large known total set. This, for instance, applies to the popular use-case of a supermarket checkout where the items in a shopping cart need quick and reliable identification. Since the number of items in the cart is usually very small compared to the total amount of inventoried items in a store, it appears natural to formulate the identification problem according to compressed sensing, exploiting the inherent sparsity of the problem and allowing collisions in tag responses rather than avoiding them. This yields a very efficient way of identifying tags with only a small number of measurements. We introduce a novel tag identification scheme that utilizes the computationally cheap Approximate Message Passing (AMP) algorithm. A simulation-based heuristic is introduced to minimize the number of required measurements for AMP recovery. Furthermore, a method of implementation is sketched, and the performance of the proposed scheme is investigated and compared to the well known frame slotted aloha protocol. A large gain in identification throughput is achieved.
RFID, compressed sensing, backscatter
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
Electronic version of the publication:
Created from the Publication Database of the Vienna University of Technology.