Remote Estimation of Correlated Sources under Energy Harvesting Constraints
Journal article, 2018

Remote estimation with an energy harvesting sensor with a limited data and energy buffer is considered. The sensor node observes an unknown temporally correlated field and communicates its observations to a remote fusion center using the energy it harvested. The fusion center employs linear minimum mean-square error (LMMSE) estimation to reconstruct the unknown field. We provide performance guarantees for the estimation error under a block transmission scheme, where at each transmission block, data and energy buffers are completely emptied. Our bounds provide insights into how statistical prop- erties of the energy harvesting process and buffer sizes may affect the estimation error. In particular, these bounds suggest insensitivity of the performance to buffer sizes for signals with low degree of freedom and suggest performance improvements with increasing buffer sizes for signals with relatively higher degree of freedom. Depending only on the mean, variance and finite support of the energy arrival process, these results provide insights for the energy and data buffer sizes for deployment in future energy harvesting wireless sensing systems.

Energy harvesting

Wireless communication

correlated signals

energy harvesting

wireless sensor networks

Correlation

distortion minimization

Sensors

Estimation error

Optimization

Author

Ayca Ozcelikkale

Uppsala University

Tomas McKelvey

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Signal Processing

Mats Viberg

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Signal Processing

IEEE Transactions on Wireless Communications

1536-1276 (ISSN)

Vol. 17 8 5300-5313 8374044

Areas of Advance

Information and Communication Technology

Energy

Driving Forces

Sustainable development

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/TWC.2018.2841390

More information

Latest update

8/27/2018