一种基于码分复用机制的超高频RFID防碰撞方法
doi: 10.3724/SP.J.1146.2006.00635
The Design of Anti-collision of UHF RFID System Based on CDMA
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摘要: 在超高频射频识别的防碰撞技术中，射频码分复用和扩频通讯因其具有抗干扰、保密性和抗多径等特性而具有优势。该文设计了一种基于码分复用的射频识别数据接收和发送、ID识别的工作机制。该文对这种机制的运行作了仿真分析和对比，得出了待识别的Tag数目和识别时间以及碰撞次数之间的关系，从而对实际应用提供依据。
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关键词:
- 码分复用;防碰撞;超高频;射频识别
Abstract: CDMA is superior to others methods in the anti-collision of UHF RFID systems for its anti-jamming, security features. A mechanism of anti-collision base on CDMA and its circuits is designed in this paper. This mechanism is simulated, so the relationship of time consumption of identification with the count of Tags is educed and discussed. -
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