Interference cancellation-based RFID tags identification
| Research Area: | Fast tag identification in RFID systems | Year: | 2011 | ||||
|---|---|---|---|---|---|---|---|
| Type of Publication: | In Proceedings | ||||||
| Authors: | Raju Kumar; Thomas F. La Porta; Gaia Maselli; Chiara Petrioli | ||||||
| Book title: | MSWiM | ||||||
| Pages: | 111-118 | ||||||
| Abstract: | In this paper we investigate interference cancellation to faster identify tags in RFID networks. We explore how interference cancellation can be applied to ALOHA and tree-based identification schemes, its limitations, the extent of achievable improvements, and the overhead incurred to obtain effective gains. Analytical and simulation results show that for an ALOHA-based scheme interference cancellation allows us to identify nearly 23% of tags without directly interrogating them. This speeds up tag identification (over 20% faster) while producing little overhead. For a tree-based scheme nearly 50% of the tags are identified by exploiting interference cancellation, resulting in an improvement of the identification rate of over 20%. Finally, we propose an enhancement of the tree-based scheme with interference cancellation that achieves a further identification speed up of 50%. |
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