A Reduced Complexity of Vahedi's Tag Estimation Method for DFSA

  • Sanika K. Wijayasekara Chulalongkorn University
  • Annur Robithoh Universiti Tunku Abdul Rahman
  • Pruk Sasithong King Mongkut's University of Technology North Bangkok
  • Pisit Vanichchanunt King Mongkut's University of Technology North Bangkok
  • Suvit Nakpeerayuth Chulalongkorn University
  • Lunchakorn Wuttisittikulkij Chulalongkorn University

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Abstract

In order to calculate the number of tags in a radio frequency identification (RFID) system, several tag estimation methods have been investigated in literature and most of the available estimation methods need the overall knowledge of idle, success and collision slots of the previous frame to carry out the tag estimation process. In this article, we present three techniques to reduce the complexity of Vahedi’s tag estimation for tag collision resolution in RFID systems using dynamic frame slotted ALOHA. Our modified and useful approach considers the information about only the number of empty, successful or colliding slots in the previous frame for the tag estimation. Three decision rules were obtained by maximizing the likelihood of success, idle and collision which helps in the reduction of complexity substantially. However, the accuracy of estimation decreases for success-only and idle-only methods while the collision-only method gives a consistent and lower estimate error when the frame sizes and the number of tags increase.

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Author Biographies
Sanika K. Wijayasekara

Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Annur Robithoh

Faculty of Information and Communication Technology, Universiti Tunku Abdul Rahman, Kuala Lumpur, Malaysia

Pruk Sasithong

Department of Electrical and Computer Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, Thailand

Pisit Vanichchanunt

Department of Electrical and Computer Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, Thailand

Suvit Nakpeerayuth

Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Lunchakorn Wuttisittikulkij

Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Published
Vol 21 No 6, Oct 31, 2017
How to Cite
S. Wijayasekara, A. Robithoh, P. Sasithong, P. Vanichchanunt, S. Nakpeerayuth, and L. Wuttisittikulkij, “A Reduced Complexity of Vahedi’s Tag Estimation Method for DFSA”, Engineering Journal (Eng. J.), vol. 21, no. 6, pp. 111-125, Oct. 2017.

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