Phase Retrieval via Incremental Truncated Wirtinger Flow

  title={Phase Retrieval via Incremental Truncated Wirtinger Flow},
  author={Ritesh Kolte and Ayfer {\"O}zg{\"u}r},
In the phase retrieval problem, an unknown vector is to be recovered given quadratic measurements. This problem has received considerable attention in recent times. In this paper, we present an algorithm to solve a nonconvex formulation of the phase retrieval problem, that we call Incremental Truncated Wirtinger Flow. Given random Gaussian sensing vectors, we prove that it converges linearly to the solution, with an optimal sample complexity. We also provide stability guarantees of the… CONTINUE READING
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