In-vivo Experimental Validation of the Attenuation Path Loss Model for Localization of Wireless Implanted Transmitters at 2.45 GHz
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In-vivo Experimental Validation of the Attenuation Path Loss Model for Localization of Wireless Implanted Transmitters at 2.45 GHz. / Salchak, Yana A.; Albadri, Noor M.; Bjorkman, Tracey; Lau, Cora; Nadimi, Esmaeil S.; Bollen, Peter; Espinosa, Hugo G.; Thiel, David V.
In: IEEE Access, Vol. 10, 2022, p. 84894-84912.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - In-vivo Experimental Validation of the Attenuation Path Loss Model for Localization of Wireless Implanted Transmitters at 2.45 GHz
AU - Salchak, Yana A.
AU - Albadri, Noor M.
AU - Bjorkman, Tracey
AU - Lau, Cora
AU - Nadimi, Esmaeil S.
AU - Bollen, Peter
AU - Espinosa, Hugo G.
AU - Thiel, David V.
N1 - Publisher Copyright: © 2013 IEEE.
PY - 2022
Y1 - 2022
N2 - Wireless capsule endoscopy (WCE) is a modern, non-invasive method of gastrointestinal examination that can significantly reduce mortality and morbidity. One of the current challenges in WCE is the precise localization of the capsule. An accurate path loss propagation model can be used to find the exact distance from the surface to the capsule inside the abdominal cavity. Unfortunately, there are no standardized In-to-On-Body channel models describing the signal propagation at ultra-high frequencies that are used in the most commercially available WCE systems. This study addresses the gap by conducting an experimental validation of a new propagation model for WCE applications at 2.45 GHz. The results were confirmed by conducting two separate in-vivo trials on porcine animals under general anesthesia. The performance of the model as well as the corresponding ranging errors were evaluated when it was used as an inverse solution for distance estimation to an ingested transmitter. The main advantage of the model is its theoretical basis, which can help further generalize the findings for similar communication scenarios. The obtained ranging error was smaller than one centimeter, suggesting that it can be used for accurate range-based positioning of implanted transmitters.
AB - Wireless capsule endoscopy (WCE) is a modern, non-invasive method of gastrointestinal examination that can significantly reduce mortality and morbidity. One of the current challenges in WCE is the precise localization of the capsule. An accurate path loss propagation model can be used to find the exact distance from the surface to the capsule inside the abdominal cavity. Unfortunately, there are no standardized In-to-On-Body channel models describing the signal propagation at ultra-high frequencies that are used in the most commercially available WCE systems. This study addresses the gap by conducting an experimental validation of a new propagation model for WCE applications at 2.45 GHz. The results were confirmed by conducting two separate in-vivo trials on porcine animals under general anesthesia. The performance of the model as well as the corresponding ranging errors were evaluated when it was used as an inverse solution for distance estimation to an ingested transmitter. The main advantage of the model is its theoretical basis, which can help further generalize the findings for similar communication scenarios. The obtained ranging error was smaller than one centimeter, suggesting that it can be used for accurate range-based positioning of implanted transmitters.
KW - animals
KW - body area networks
KW - channel models
KW - implantable biomedical devices
KW - narrowband
KW - UHF antennas
KW - wireless capsule endoscopy
KW - Wireless communication
U2 - 10.1109/ACCESS.2022.3196376
DO - 10.1109/ACCESS.2022.3196376
M3 - Journal article
AN - SCOPUS:85135740248
VL - 10
SP - 84894
EP - 84912
JO - IEEE Access
JF - IEEE Access
SN - 2169-3536
ER -
ID: 318706195