Subsampling for graph power spectrum estimation

  title={Subsampling for graph power spectrum estimation},
  author={Sundeep Prabhakar Chepuri and Geert Leus},
  journal={2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM)},
In this paper we focus on subsampling stationary random signals that reside on the vertices of undirected graphs. Second-order stationary graph signals are obtained by filtering white noise and they admit a well-defined power spectrum. Estimating the graph power spectrum forms a central component of stationary graph signal processing and related inference tasks. We show that by sampling a significantly smaller subset of vertices and using simple least squares, we can reconstruct the power… CONTINUE READING
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