Model based peer-to-peer estimator over wireless sensor networks with lossy channels

Abstract

In this paper, the design methods and fundamental performance analysis of an adaptive peer-to-peer estimator are established for networks exhibiting message losses. Based on a signal state model, estimates are locally computed at each node of the network by adaptively filtering neighboring nodes' estimates and measurements communicated over lossy channels. The computation is based on a distributed optimization approach that guarantees the stability of the estimator while minimizing the estimation error variance. The fundamental performance limitations of the estimator are established based on the variance of the estimation error in relation to the message loss process. Numerical simulations validate the theoretical analysis and illustrate the performance with respect to other estimators.

A novel smartphone-based evaluation system of pedestrian-induced footbridge vibration comfort

“…The smartphone client sends the data acquisition command to the management center subsystem via Wi-Fi (Chia-Hsin and Ho, 2015; Frezzetti et al, 2015; Xu et al, 2015), and the management center subsystem receives the command and transmits it to the data acquisition subsystem through Wi-Fi. Then, the data acquisition subsystem executes the command and sends back the collected acceleration signal to the management center subsystem.…”