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rfid系统多阅读器防碰撞问题研究 被引量:4
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作者 李雪 陆百川 李政 《重庆交通大学学报(自然科学版)》 CAS 北大核心 2012年第3期435-438,442,共5页
为了解决多阅读器碰撞问题,提出了基于概率功率控制的神经网络优化算法。该算法中各阅读器的发射功率按β分布动态发生变化,然后利用简单神经网络即感知器对多个阅读器功率的相似性进行判别并处理,使各阅读器彼此之间工作在最佳状态。... 为了解决多阅读器碰撞问题,提出了基于概率功率控制的神经网络优化算法。该算法中各阅读器的发射功率按β分布动态发生变化,然后利用简单神经网络即感知器对多个阅读器功率的相似性进行判别并处理,使各阅读器彼此之间工作在最佳状态。仿真实验结果表明:多阅读器之间的干扰大大减小,其识别标签的距离可以达到期望值。 展开更多
关键词 RFID 神经网络 阅读器 防碰撞问题
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Design of Anti-Collision Integrated Security Mechanism Based on Chaotic Sequence in UHF RFID System 被引量:5
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作者 YUE Keqiang SUN Lingling +1 位作者 QIN Xing ZHENG Zhonghua 《China Communications》 SCIE CSCD 2014年第3期137-147,共11页
Collision and security issues are considered as barriers to RFID applications.In this paper,a parallelizable anti-collision based on chaotic sequence combined dynamic frame slotted aloha to build a high-efficiency RFI... Collision and security issues are considered as barriers to RFID applications.In this paper,a parallelizable anti-collision based on chaotic sequence combined dynamic frame slotted aloha to build a high-efficiency RFID system is proposed.In the tags parallelizable identification,we design a Discrete Markov process to analyze the success identification rate.Then a mutual authentication security protocol merging chaotic anti-collision is presented.The theoretical analysis and simulation results show that the proposed identification scheme has less than 45.1%of the identification time slots compared with the OVSF-system when the length of the chaos sequence is 31.The success identification rate of the proposed chaotic anti-collision can achieve 63%when the number of the tag is100.We test the energy consumption of the presented authentication protocol,which can simultaneously solve the anti-collision and security of the UHF RFID system. 展开更多
关键词 ANTI-COLLISION SECURITY chaoticsequence discrete Markov process performance analysis
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