| 跳频CDMA的RFID防碰撞算法研究 |
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| 引用本文： | 魏东梅,黄景武,邹传云.跳频CDMA的RFID防碰撞算法研究[J].信息安全与通信保密,2011,9(8):41-43. |
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| 作者姓名： | 魏东梅 黄景武 邹传云 |
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| 作者单位： | 西南科技大学信息工程学院,四川绵阳,621010 |
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| 摘 要： | 分析了当前RFID系统的防碰撞算法,研究防碰撞机制和相关的算法,结合跳频技术与CDMA提出基于跳频CDMA的RFID防碰撞算法。算法以不同的相互正交的码序列区分标签,在同一个时隙中标签通过跳频来防止碰撞的产生。通过一个2.4GHz有源RFID系统来实现和验证算法。实验表明,跳频CDMA算法能有效防止标签碰撞的产生,在时延方面优于二进制树形搜索算法。
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| 关 键 词： | 无线射频识别 防碰撞 跳频 码分多址 |
RFID Anti-collision Algorithm of Frequency-Hopping CDMA |
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| WEI Dong-mei,HUANG Jing-wu,ZOU Chuan-yun.RFID Anti-collision Algorithm of Frequency-Hopping CDMA[J].China Information Security,2011,9(8):41-43. |
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| Authors: | WEI Dong-mei HUANG Jing-wu ZOU Chuan-yun |
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| Affiliation: | WEI Dong-mei,HUANG Jing-wu,ZOU Chuan-yun(School of Information Engineering,Southwest University of Science and Technology,Mianyang Sichuan 621010,China) |
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| Abstract: | The current anti-collision algorithm for RFID system is analyzed,and the anti-collision mechanism and the related algorithms are studied.Combined with frequency hopping and frequency-hopping CDMA the RFID-based anti-collision algorithm is proposed.This algorithm Distinguishes the tags in different orthogonal code sequences,and in the same slot,the tag prevents collisions by the generation of frequency hopping.By a 2.4 GHz active RFID system the algorithm is implemented and verified.The experiment shows that the frequency-hopping CDMA algorithm could effectively prevent the generation of the tag collision,and is better than the binary-tree search algorithm in delay performance. |
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| Keywords: | RFID anti-collision frequency hopping CDMA |
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