On Effect of Transmit Power Variance on Localization Accuracy in Wireless Capsule Endoscopy

Provided by: Worcester Group
Topic: Mobility
Format: PDF
This paper presents an analysis on localization accuracy of a capsule used for wireless endoscopy application when there are random variations in transmit power of sensor nodes. The authors use a three-dimensional human body model and the log normal model for Received Signal Strength (RSS) radio propagation from the implant to the sensor nodes on the body surface to find accuracy bounds in three digestive organs, namely stomach, small intestine, and large intestine, which form the human Gastro-Intestinal (GI) track. The analysis is done using Bayesian Cramer-Rao bound assuming that the transmit power is random process with known prior distribution.

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