An adaptive subsample delay estimator using a quadrature demodulator

Maskell, Douglas L., and Woods, Graham S. (2003) An adaptive subsample delay estimator using a quadrature demodulator. In: Proceedings of the Joint 4th International Conference on Information Communications and Signal Processing, 2003 and 4th Pacific Rim Conference on Multimedia (3), pp. 1-4. From: Joint ACICS-PCM 2003, 15-18 December 2003, Singapore.

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Abstract

An on-line delay estimation algorithm based upon 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 discrete-time quadrature technique to directly update the delay estimate, which is in turn used to adapt the coefficients of a simple fractional delay filter (FDF). The estimator is insensitive to variations in the amplitudes of the input signals, is simple to implement and has a reduced complexity compared to other adaptive techniques. Simulations show that in the presence of system noise, the new estimator significantly outperforms conventional fractional delay filter based estimators.

Item ID: 50105
Item Type: Conference Item (Refereed Research Paper - E1)
Date Deposited: 05 Sep 2017 23:02
FoR Codes: 01 MATHEMATICAL SCIENCES > 0103 Numerical and Computational Mathematics > 010301 Numerical Analysis @ 50%
09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090609 Signal Processing @ 50%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8999 Other Information and Communication Services > 899999 Information and Communication Services not elsewhere classified @ 100%
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