Distributed wavelet transform for irregular sensor network grids
Wagner, R.; Hyeokho Choi; Baraniuk, R.; Delouille, V.
Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on
Volume , Issue , 17-20 July 2005 Page(s):1196 - 1201
Digital Object Identifier   10.1109/SSP.2005.1628777
Summary:Wavelet-based distributed data processing holds much promise for sensor networks; however, irregular sensor node placement precludes the direct application of standard wavelet techniques. In this paper, we develop a new distributed wavelet transform based on lifting that takes into account irregular sampling and provides a piecewise-planar multiresolution representation of the sensed data. We develop the transform theory; outline how to implement it in a multi-hop, wireless sensor network; and illustrate with several simulations. The new transform performs on par with conventional wavelet methods in a head-to-head comparison on a regular grid of sensor nodes

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