| 一种基于碰撞因子的RFID标签估算方法 |
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| 引用本文： | 贺洪江,丁晓叶,翟耀绪.一种基于碰撞因子的RFID标签估算方法[J].计算机应用研究,2011,28(11):4131-4133. |
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| 作者姓名： | 贺洪江 丁晓叶 翟耀绪 |
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| 作者单位： | 1. 河北工程大学信息与电气工程学院,河北邯郸,056038
2. 南开大学物理科学学院,天津,300071 |
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| 摘 要： | 在射频识别系统中，标签数目的精确估算对于动态帧时隙ALOHA反碰撞算法起着关键的作用。基于与已往只能使用查表法和曲线拟合法不同，通过理论推导直接给出了碰撞因子与空闲、成功和碰撞时隙概率之间的数学表达式，给出了一种基于碰撞因子的标签估算方法。该方法计算简单，避免了硬件成本和拟合误差方面的缺点。MATLAB仿真证明，该方法对标签估算准确度以及标签识别速度有较大提高。
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| 关 键 词： | 反碰撞 无线射频识别技术 碰撞因子 标签估算 ALOHA算法 |
Tag quantity estimation method using collision factor in RFID systems |
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| HE Hong-jiang,DING Xiao-ye,ZHAI Yao-xu.Tag quantity estimation method using collision factor in RFID systems[J].Application Research of Computers,2011,28(11):4131-4133. |
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| Authors: | HE Hong-jiang DING Xiao-ye ZHAI Yao-xu |
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| Affiliation: | (1. College of Information & Electronic Engineering, Hebei University of Engineering, Handan Hebei 056038, China; 2. Institute of Physics, Nankai University, Tianjin 300071, China) |
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| Abstract: | In RFID systems,the estimating tags quantity is the key of dynamic framed slotted ALOHA algorithm.Unlike the table lookup and curve-fitting method,this paper directly gave a mathematical expression through theoretical calculation,which described the relation between the collision factor and the quantities of idle,success,collision slots.It proposed a tag quantity estimation using a collision factor based on the expression.This method is simple and don't have the hardware cost or fitting error.Simulation ind... |
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| Keywords: | anti-collision radio frequency identification(RFID) collision factor tags quantity estimation ALOHA algorithm |
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