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Information Technology Journal
  Year: 2011 | Volume: 10 | Issue: 9 | Page No.: 1836-1841
DOI: 10.3923/itj.2011.1836.1841
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A Study of Bidirectional Antenna for Indoor Localization using Zigbee Wireless Sensor Network

Tung-Shou Chen, Jeanne Chen and Yun-Ru Tu

Environmental changes and obstacles are two main factors affecting the accuracy of indoor positioning in wireless indoor localization. The multi-mode sensor positioning had been used to increase accuracy but at high costs. The proposed study for a new indoor localization technique is based on bidirectional antenna and Zigbee wireless sensor network. In order to reduce signal interference problems of environmental factors, an indoor localization algorithm is developed that allows the antenna transmit power to be adjustable. Since the indoor localization algorithm requires only adjustment of the antenna power, it can be quickly adapted for used in different environments. Furthermore, normal distribution adjustment is used to reduce the positioning error. Experimental results showed that the proposed positioning error is in the range of approximately 51.1 cm which is an improvement of results from other research. Experiments were conducted in two different environments with different signal interferences. Results showed that the antennae were adjustable in the two different environments. Furthermore, the proposed indoor positioning has a higher accuracy rate in comparison to eight other related works which did not use the adjustable mechanism. The proposed algorithm may be used in the applications where requirement varies based in environmental factors and individual needs.
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How to cite this article:

Tung-Shou Chen, Jeanne Chen and Yun-Ru Tu, 2011. A Study of Bidirectional Antenna for Indoor Localization using Zigbee Wireless Sensor Network. Information Technology Journal, 10: 1836-1841.

DOI: 10.3923/itj.2011.1836.1841






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