Capture-Aware Estimation for the Number of RFID Tags with Lower Complexity
Capture-Aware Estimation for the Number of RFID Tags with Lower Complexity
复制标题
复杂度较低的 RFID 标签数量的捕获感知估计
DOI:
10.1109/lcomm.2013.082413.130765
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发表时间:
2013-08
期刊:
影响因子:
--
通讯作者:
Fei Gao
中科院分区:
文献类型:
--
作者:
Xi Yang;Haifeng Wu(吴海锋);Yu Zeng(曾玉);Fei Gao
Capture effect is very common in wireless communication systems. In a passive radio frequency identification (RFID) system, even though multiple tags backscatter their signals to a reader simultaneously, one of the tags will be successfully identified due to the capture effect. In this letter, we propose an algorithm which will optimize the identification efficiency of a dynamic frame length ALOHA RFID protocol under capture effect. The proposed algorithm estimates the number of tags and the probability of capture effect. From these parameters, an optimal frame length can be obtained. The advantage of the algorithm is that it does not need many steps to search an extreme value for the estimation. It thus reduces the computational complexity. Computer simulation results show that the proposed method's identification efficiency is almost identical to existing algorithms, but at lower computational complexity.
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