RFID: Review & Comparison of Tree Based Tag Collision Resolution Algorithms

International Journal of Electronics and Communication Engineering
© 2015 by SSRG - IJECE Journal
Volume 2 Issue 3
Year of Publication : 2015
Authors : Shilpa Bhatt , Deepak Dhadwal and Ayush Bhatt
How to Cite?

Shilpa Bhatt , Deepak Dhadwal and Ayush Bhatt, "RFID: Review & Comparison of Tree Based Tag Collision Resolution Algorithms," SSRG International Journal of Electronics and Communication Engineering, vol. 2,  no. 3, pp. 15-19, 2015. Crossref, https://doi.org/10.14445/23488549/IJECE-V2I3P116


In RFID, large number of tags communicates with small number of readers by simultaneous transmission. This situation leads to collisions for which several algorithms have been developed keeping in mind the goal of its avoidance. This being the major contributor of performance in a RFID system, it has attracted a lot of researchers for developing fast algorithms. Some of such widely used tree based algorithms includes binary search tree, back tracking based, and, matrix based algorithms are discussed, and, there MATLAB simulation is performed. Binary search algorithm uses NRZ encoding to find the collision bits and on its basis, it finds the least valued tag. In back track algorithm the process of finding the lease value tag is backtracked to find the next least value tag. In matrix based algorithm, the tags are divided into groups to reduce the chances of collision. All these algorithms are simulated using MATLAB, and, simulation results are compared and displayed using line graph.


Anti-Collision, Algorithm, RFID, Binary tree, Backtrack Binary Tree, Matrix


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