In densely deployed sensor networks, correlation among measurements may be high. Spatial sampling through node selection is usually used to minimize this correlation and to save energy consumption. However because of the fading nature of the wireless channels, extra care should be taken when performing this sampling. In this paper, we develop expressions for the distortion which include the channel effects. The asymptotic behavior of the distortion as the number of sensors or total transmit power increase without bound is also investigated. Further, based on the channel and position information we propose and test several node selection schemes.
|Original language||English (US)|
|Title of host publication||2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|State||Published - Jun 2010|