A GA-based mobile RFID localization scheme for internet of things |
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Authors: | Tin-Yu Wu Guan-Hsiung Liaw Sing-Wei Huang Wei-Tsong Lee Chung-Chi Wu |
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Affiliation: | (1) Department of Electrical Engineering, Tamkang University, Taipei, Taiwan, R.O.C;(2) Department of Information Engineering, I-Shou University, Kaohsiung, Taiwan, R.O.C;(3) Department of Industrial and Systems Engineering, Chung Yuan Christian University, Taoyuan, Taiwan, R.O.C |
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Abstract: | In the current (Internet of Things) trend, the identification capability of RFID is integrated for the identification and
applications of all objects, and this trend reveals the future demand for RFID wireless communication and localization. Therefore,
this paper investigates the influences of RSSI and the distance to RFID and analyzes the common indoor localization algorithms,
including range-based algorithms and range-free algorithms. However, there are too many interference factors in the indoor
environment that easily lead to localization inaccuracy. To improve the RF-mapping technique in RFID that requires much time
for initiation and lots of calculations, this paper proposes a GA-based (Genetic Algorithms, GA) localization algorithm to
estimate the locations of unknown nodes and avoid the influence of environmental factors by pre-establishing the pattern.
The designed scenarios and reference nodes in this paper are used to train our proposed algorithm and obtain the patents of
the scenarios, which are adopted for RFID nodes to further compare and decrease errors. Therefore, as long as the algorithm
is trained in advance with the scenarios and then include the patents in the new environment, the errors and the training
time can be greatly reduced. Moreover, our proposed algorithm needs only little information about reference nodes to pre-establish
the pattern. |
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