摘要
在RFID系统中,当多个电子标签同时向阅读器发送信息时有可能产生数据碰撞现象,为解决此问题,在对动态帧时隙ALOHA算法与返回式二进制算法分析研究的基础上,提出一种将二者相结合的改进算法。该算法吸取ALOHA算法反应速度快和二进制算法识别效率高的优点,同时能估计系统内剩余标签数量,动态调整帧长度,使系统工作在最优状态。理论分析和MATLAB仿真结果表明:改进算法较传统防碰撞算法有效地提高了系统吞吐率,同时减少查询标签所需时隙数。
In the RFID system,it is possible to produce a data collision phenomenon when multiple electronic tags send information to the reader,to solve this problem,based on the analysis and research of the dynamic frame slot ALOHA algorithm and back-off binary search algorithm,we proposed an improved algorithm combining the two.The algorithm absorbs the advantages of fast of ALOHA algorithm and high efficiency of binary algorithm,simultaneously it can estimate the number of remaining tags within the system and adjust frame length dynamically,then makes the system work in the optimal state.Theoretical analysis and simulation results show that the improved algorithm is better than the traditional anti-collision algorithm.It can effectively improve the system throughput and reduce the number of slots required for the query tag at the same time.
出处
《电子测量技术》
2016年第2期38-41,共4页
Electronic Measurement Technology
