Interference Avoidance Algorithms for Passive RFID Systems Using Contention-Based Transmit Abortion(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
The performance of a passive RFID system in a dense multi-reader environment is limited by both reader-to-reader interference and reader-to-tag interference. In this paper, we formulate a practical RFID system model which takes into account the non-linear demodulation of the tags and the transmission spectrum of the readers. Using this model, we derive a novel linear programming formulation to obtain the optimum communication probability of the readers for a given reader deployment scenario. We then propose two novel distributed interference avoidance algorithms based on the detect-and-abort principle for multi-channel readers which can effectively mitigate the reader-to-tag interference as well as the reader-to-reader interference. Computer simulations show that the proposed algorithms can improve the successful communication probability and fairness among readers in dense reader environments, compared with the conventional listen-before-talk algorithm.
- 社団法人電子情報通信学会の論文
- 2007-11-01
著者
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Sasase Iwao
Department Of Information And Computer Science Keio University
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Tanaka Yoshinori
Network System Laboratory Fujitsu Laboratories Ltd.
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Tanaka Yoshinori
Network System Laboratory Fujitsu Laboratories Ltd.:department Of Information And Computer Science K
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