Investigation of Interference Models for RFID Systems

• Published in: Sensors (Basel, Switzerland) Vol. 16; no. 2; p. 199
• Main Authors: Zhang, Linchao, Ferrero, Renato, Gandino, Filippo, Rebaudengo, Maurizio
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 04-02-2016; MDPI
• Subjects: Collision avoidance; Communications systems; Computer simulation; interference model; International conferences; Multimedia; Protocol; Questioning; Radio frequency identification; reader-to-reader collision; RFID; Sensors; Simulation; reader-to-reader collision; RFID; interference model
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s16020199

The reader-to-reader collision in an RFID system is a challenging problem for communications technology. In order to model the interference between RFID readers, different interference models have been proposed, mainly based on two approaches: single and additive interference. The former only considers the interference from one reader within a certain range, whereas the latter takes into account the sum of all of the simultaneous interferences in order to emulate a more realistic behavior. Although the difference between the two approaches has been theoretically analyzed in previous research, their effects on the estimated performance of the reader-to-reader anti-collision protocols have not yet been investigated. In this paper, the influence of the interference model on the anti-collision protocols is studied by simulating a representative state-of-the-art protocol. The results presented in this paper highlight that the use of additive models, although more computationally intensive, is mandatory to improve the performance of anti-collision protocols.