摘要
为优化射频识别系统(RFID)性能,达到便捷高效管理和保障渔业安全生产,在对现有ALOHA算法的分析基础上,基于最优化原理提出一种改进型动态帧时隙ALOHA防避碰算法。该算法根据标签的数量动态,改变帧时隙的长度。运用改进的动态帧时隙算法对标签数量进行精确估计。通过仿真比较,在标签数量大量增加或者数量很少的情况下,改进后的算法使系统吞吐量最大达到了43%。当标签个数变化时,系统的吞吐量变化并不大;系统响应时延在标签数量变多的时候相比传统算法优势明显,响应时间几乎减少一半。相比传统算法,改进后的算法在系统吞吐量、系统响应时延等方面都有了明显的改善,提高了整个射频识别系统的性能,较好的适应了系统要求。
To optimize the performance of radio frequency identification system（RFID）, achieve efficientmanagement and ensure fishery production safety, the paper put forward an improved dynamic frame slottedALOHA anti- collision algorithm based on the analysis of the existing ALOHA algorithm. The algorithmchanged the frame slot length according to the number dynamics of tags. The improved algorithm used thedynamic frame slotted algorithm to estimate the number of tags. Simulation results showed that the maximumthroughput of the improved algorithm system reached 43% when the number of tag increased or decreased. Thethroughput changed little when the number of tags changed. Compared with the traditional algorithms, theimproved algorithms had obvious advantages on response time of the system when the number of tags changedmuch, and the response time reduced almost in half. The throughput and response delay of the improvedalgorithm had been significantly enhanced compared with the traditional algorithm. The new algorithmimproved the performance of radio frequency identification system and better adapted to the requirements ofthe system.
出处
《中国农学通报》
2015年第14期74-78,共5页
Chinese Agricultural Science Bulletin
基金
中国水产科学研究院院部中央级公益性科研院基本科研业务费专项资金项目"海洋渔船超短波自组织网络通信技术研究项目"(2014A10XK06)
