Interpolation based on stationary and adaptive AR(1) modeling
Paper i proceeding, 2011

In this paper, we describe a minimal mean square error (MMSE) optimal interpolation filter for discrete random signals. We explicitly derive the interpolation filter for a first-order autoregressive process (AR(1)), and show that the filter depends only on the two adjacent points. The result is extended by developing an algorithm called local AR approximation (LARA), where a random signal is locally estimated as an AR(1) process. Experimental evaluation illustrates that LARA interpolation yields a lower mean square error than other common interpolation techniques, including linear, spline and local polynomial approximation (LPA).

Interpolation

LMMSE estimation

autoregressive modeling

adaptive filtering

Författare

Eija Johansson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Marie Ström

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Lennart Svensson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Mats Viberg

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

15206149 (ISSN)

4052-4055 5947242

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/ICASSP.2011.5947242

ISBN

978-145770539-7

Mer information

Skapat

2017-10-07