A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation
Wi-Fi-based indoor position sensing solutions have the advantages of easy integration in mobile phones and low cost by using existing Wi-Fi access points. The mainstream methods are commonly based on the received signal strength indicator (RSSI), which suffers from multipath interference in complica...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/18/3983 |
| _version_ | 1828110075724562432 |
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| author | Tuo Xie Hanjun Jiang Xijin Zhao Chun Zhang |
| author_facet | Tuo Xie Hanjun Jiang Xijin Zhao Chun Zhang |
| author_sort | Tuo Xie |
| collection | DOAJ |
| description | Wi-Fi-based indoor position sensing solutions have the advantages of easy integration in mobile phones and low cost by using existing Wi-Fi access points. The mainstream methods are commonly based on the received signal strength indicator (RSSI), which suffers from multipath interference in complicated indoor environments. Through the in-depth analysis of the multipath interference, an RSSI-assisted time difference of arrival (TDoA) method is proposed for Wi-Fi-based indoor position sensing in this work. The key idea is to compensate for the multipath interference in the received signals based on the coarse estimation using RSSI and TDoA calculation. A prototype system has been implemented to validate the proposed method. Experimental results have demonstrated the effectiveness of the proposed method, especially for handling the multipath interference with small propagation delay difference. Experimental results show that the indoor position sensing system can achieve a 90th percentile error of 0.3 m. The proposed method can also achieve moderate computational complexity and moderate real-time performance compared to other methods. |
| first_indexed | 2024-04-11T11:14:06Z |
| format | Article |
| id | doaj.art-7d0200b74d21491b9b90076d925a5df0 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T11:14:06Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-7d0200b74d21491b9b90076d925a5df02022-12-22T04:27:19ZengMDPI AGSensors1424-82202019-09-011918398310.3390/s19183983s19183983A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference MitigationTuo Xie0Hanjun Jiang1Xijin Zhao2Chun Zhang3Institute of Microelectronics, Tsinghua University, Beijing 100084, ChinaInstitute of Microelectronics, Tsinghua University, Beijing 100084, ChinaInstitute of Microelectronics, Tsinghua University, Beijing 100084, ChinaInstitute of Microelectronics, Tsinghua University, Beijing 100084, ChinaWi-Fi-based indoor position sensing solutions have the advantages of easy integration in mobile phones and low cost by using existing Wi-Fi access points. The mainstream methods are commonly based on the received signal strength indicator (RSSI), which suffers from multipath interference in complicated indoor environments. Through the in-depth analysis of the multipath interference, an RSSI-assisted time difference of arrival (TDoA) method is proposed for Wi-Fi-based indoor position sensing in this work. The key idea is to compensate for the multipath interference in the received signals based on the coarse estimation using RSSI and TDoA calculation. A prototype system has been implemented to validate the proposed method. Experimental results have demonstrated the effectiveness of the proposed method, especially for handling the multipath interference with small propagation delay difference. Experimental results show that the indoor position sensing system can achieve a 90th percentile error of 0.3 m. The proposed method can also achieve moderate computational complexity and moderate real-time performance compared to other methods.https://www.mdpi.com/1424-8220/19/18/3983indoor position sensingRSSITDoAmultipath interferenceWi-Fi |
| spellingShingle | Tuo Xie Hanjun Jiang Xijin Zhao Chun Zhang A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation Sensors indoor position sensing RSSI TDoA multipath interference Wi-Fi |
| title | A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation |
| title_full | A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation |
| title_fullStr | A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation |
| title_full_unstemmed | A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation |
| title_short | A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation |
| title_sort | wi fi based wireless indoor position sensing system with multipath interference mitigation |
| topic | indoor position sensing RSSI TDoA multipath interference Wi-Fi |
| url | https://www.mdpi.com/1424-8220/19/18/3983 |
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