Passive UHF tag collision resolution on PHY layer

Hai-feng WU; Yu ZENG

doi:10.11959/j.issn.1000-436x.2015030

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Passive UHF tag collision resolution on PHY layer

Academic papers | 更新时间：2024-06-05

- Passive UHF tag collision resolution on PHY layer
- Journal on Communications Vol. 36, Issue 2, Pages: 20-28(2015)
- 作者机构：
  
  云南民族大学电气信息工程学院，云南昆明 650500
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61262091);Applied and Basic Research Foundation of Yunnan Province(2011FB083);The Major Special Project of Scientific Research Foundation of Yunnan Provincial Department of Edu-cation(ZD2011009);The Scientific Research Foundation of Yunnan Provincial Department of Education(2014Z093);A Grant From Innovative Research Team in Yunnan University of Nationalities(The Youth of Seventeenth Batches of Leaders in Academic and Technical Talents Project of Yunnan Province)
- DOI：10.11959/j.issn.1000-436x.2015030
  CLC： TP393.04
- Online First：2015-02，
  
  Published：25 February 2015
- 稿件说明：
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Hai-feng WU, Yu ZENG. Passive UHF tag collision resolution on PHY layer[J]. Journal on Communications, 2015, 36(2): 20-28.
DOI：

Hai-feng WU, Yu ZENG. Passive UHF tag collision resolution on PHY layer[J]. Journal on Communications, 2015, 36(2): 20-28. DOI： 10.11959/j.issn.1000-436x.2015030.

摘要

提出一种分离冲突信号算法，先用动尺度变换将冲突信号变换至时—尺域并得到变换矩阵，然后由最小二乘和最小均方误差准则将冲突信号分离以检测标签信号。仿真结果表明，相比传统标签分离方法，所提方法仅采用单接收天线就可分离2个以上冲突标签信号，并在无捕获效应下也具有良好分离性能。

Abstract

An algorithm was proposed to separate the collided signals on the PHY layer.The proposed algorithm firstly adopts a dynamic-scale transformation to transform the collided signals to time-scale domains.And then

a transforming matrix would be obtained from the transformation.Finally

least square and minimum mean square error criterion are utilized to separate the collided tag signals.Simulation results show that

in contrast to the conventional signal separation approaches

the proposed algorithm can separate more than two tag signals under single-antenna condition and have better performance of separation even without capture effect.

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Keywords

references

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