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Adaptive subsample delay estimation using a windowed quadrature phase detector

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2 Author(s)
Maskell, D.L. ; Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore, Singapore ; Woods, G.S.

An on-line delay estimation algorithm based on an analogue quadrature phase detector that is suitable for determining the subsample delay between two noisy sinusoidal signals is introduced. The new estimator uses a windowed discrete-time quadrature technique to update directly the delay estimate, which is in turn used to adapt the coefficients of a simple fractional delay filter (FDF). Simulations show that, in the presence of system noise, the new estimator significantly outperforms conventional fractional delay filter based estimators.

Published in:

TENCON 2003. Conference on Convergent Technologies for the Asia-Pacific Region  (Volume:1 )

Date of Conference:

15-17 Oct. 2003