Signal Alignment : A Method Based on Non-Convex Optimization

Bayram I.

22nd IEEE Signal Processing and Communications Applications Conference (SIU), Trabzon, Turkey, 23 - 25 April 2014, pp.204-207 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Trabzon
  • Country: Turkey
  • Page Numbers: pp.204-207
  • Istanbul Technical University Affiliated: Yes


We consider the problem of aligning two observations of a source signal. We propose a method that does not require to explicitly estimate the time-delay between the observations. The method relies on extracting a phase map that acts on the short time Fourier coefficients of one of the observations. We formulate the phase map extraction step as a simple non-convex minimization problem. We also discuss how the proposed method preserves the statistical properties of the unwanted noise, while aligning the source of interest in both observations.