Research output: Contribution to journal › Article › peer-review
We consider a deconvolution problem with a random noise. The noise is a product of a Gaussian stationary random process by a weight function εh ∈ L2(R1) with constant ε > 0. We study the asymptotically minimax and Bayes settings (ε → 0). In the minimax model a priori information is given that the solution belongs to a ball in Sobolev space W2β(R1). For such a priori information we find an asymptotically minimax estimator of the solution. In the Bayes setting the noise is the same. The solution is a realization of a random process defined as a product of a Gaussian stationary random process by a weight function h1 ∈ L2(R1). We show that the standard Wiener filters remain asymptotically Bayes estimators for this modification of Wiener filtration. The introduction of weight functions h, h1 ∈ L2(R1) is the main difference from the standard settings. This allows us not to make the traditional assumptions that the powers of noise and solutions are infinite or tend to infinity.
| Original language | English |
|---|---|
| Pages (from-to) | 1339-1359 |
| Number of pages | 21 |
| Journal | Inverse Problems |
| Volume | 19 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2003 |
ID: 71602260