Impact of correlation in node locations on the performance of distributed compression
Frank Oldewurtel, Janne Riihijärvi, Petri Mähönen · 2009
In this paper we analyze the impact of correlation in both node locations and sensed phenomenon on the performance of distributed compression. In particular, we consider the optimization of wireless sensor networks (WSNs) in realistic environments. Distributed source coding (DSC) is a compression technique performed by, for example, data gathering applications in which energy consumption and bandwidth usage are important factors. In this work, we consider different node deployment strategies and include in our study models of sensed data with different correlation types in order to model more realistic WSNs. Our evaluation takes into account the transmission overhead and signal processing costs associated with distributed compression. The energy model applied makes use of measurements obtained from real experiments.