北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2014, Vol. 37 ›› Issue (s1): 72-76.doi: 10.13190/j.jbupt.2014.s1.014

• 论文 • 上一篇    下一篇

RFID网络中基于Aloha防碰撞的标签数目的联合估计算法

袁开国1, 郝昱文2, 李争平3, 张笛笛3   

  1. 1. 北京邮电大学 计算机学院, 北京 100876;
    2. 中国人民武装警察部队总医院, 北京100039;
    3. 北方工业大学 信息工程学院, 北京 100144
  • 收稿日期:2013-10-15 出版日期:2014-06-28 发布日期:2014-06-28
  • 作者简介:袁开国(1982- ),男,博士,E-mail:flyingdreaming@gmail.com.
  • 基金资助:

    中央高校基本科研业务费专项资金项目(BUPT2012RC0217)

A Hybrid Tag Number Estimation Scheme for Aloha Based Anti-Collision Algorithm in RFID Networks

YUAN Kai-guo1, HAO Yu-wen2, LI Zheng-ping3, ZHANG Di-di3   

  1. 1. School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. General Hospital of Chinese People's Armed Police Forces, Beijing 100039, China;
    3. College of Information Engineering, North China University of Technology, Beijing 100144, China
  • Received:2013-10-15 Online:2014-06-28 Published:2014-06-28
  • Supported by:
     

摘要:

射频识别网络中基于Aloha的标签防碰撞算法,标签的碰撞大大降低系统的吞吐量.如果标签的数量已知,则可以大大提高系统的吞吐量.在最大似然估计的基础上结合二进制搜索防碰撞算法和基于Aloha的防碰撞算法提出标签数量联合估计方案.仿真结果表明,提出的方案比现有的算法具有更高的准确性.

关键词: 最大似然估计, 射频识别, 防碰撞算法, Aloha

Abstract:

For the Aloha based anti-collision algorithm in radio frequency identification networks, tag collisions could greatly reduce the throughput of the system. If the number of tags was got, the throughput could be greatly improved. Based on maximum likelihood estimation, the proposed hybrid tag number estimation scheme combines the binary search based anti-collision algorithm and aloha based anti-collision algorithm to estimate the tag number. Simulation shows that the proposed scheme has higher estimation accuracy than the existing algorithm.

Key words: maximum likelihood estimation, radio frequency identification, anti-collision algorithm, Aloha

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