Title :
A unified framework for energy efficient physical activity tracking
Author :
Zois, Daphney-Stavroula ; Mitra, U.
Author_Institution :
Ming Hsieh Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
A unified framework of joint state tracking and control design is proposed for energy-efficient physical activity tracking in heterogeneous Wireless Body Area Networks (WBANs). The objective is to devise sensor selection strategies for the WBAN´s fusion center to optimize the trade-off between tracking performance and energy consumption. Our recently proposed Kalman-like estimator is employed for state tracking. The associated mean-squared error and an appropriate energy consumption metric are used in a partially observable Markov decision process formulation to derive the optimal selection strategy. A low-complexity suboptimal strategy is also proposed. Numerical results are provided using real WBAN experimental data.
Keywords :
Markov processes; body area networks; energy consumption; mean square error methods; Kalman-like estimator; Markov decision; WBAN; control design; energy consumption; energy-efficient physical activity tracking; fusion center; heterogeneous wireless body area networks; joint state tracking; mean squared error; sensor selection; Accuracy; Electrocardiography; Energy consumption; Markov processes; Mobile handsets; Vectors; Wireless sensor networks;
Conference_Titel :
Signals, Systems and Computers, 2013 Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4799-2388-5
DOI :
10.1109/ACSSC.2013.6810232
