摘要
在RFID系统中,由标签引起的冲突一直是影响RFID系统性能的重要因素。文中在对现有的ALOHA算法分析的基础上,提出了一种改进型的ALOHA算法。针对现有ALOHA算法吞吐率低的缺点,改进型算法增加了碰撞避免功能,使标签发送数据信息之前先检测信道是否有数据传输,再决定是否发送数据信息,这会在一定程度上减少标签信息产生冲突。通过仿真表明:改进型ALOHA算法的系统吞吐量最大值达到53%,提高了RFID系统的效率。
In RFID systems, one of the problems is the collision between tags, a major issue affecting sys- tem performance. This paper detailsthe analysis of several commonly used anti-collision algorithms, i. e. ALOHA algorithm, framed slotted ALOHA algorithm, and Based on the analysis, the paper proposes a new ALOHA shown that with the proposed algorithm the maximum system ficiencv of RFID systems is imoroved. dynamic framed slotted ALOHA algorithm. algorithm. The simulation throughput can reach up and analysis have to 53% and the ef-
出处
《南京邮电大学学报（自然科学版）》
北大核心
2013年第1期56-61,共6页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
国家自然科学基金(61071089)资助项目
