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Super-resolution time delay estimation in multipath environments

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4 Author(s)
Feng-Xiang Ge ; Dept. of Electr. & Electron. Eng., Hong Kong Univ., China ; Dongxu Shen ; Yingning Peng ; Li, V.O.K.

The problem of super-resolution time delay estimation in multipath environments is addressed in this paper. Two cases, active and passive systems, are considered. The time delay estimation is first converted into a sinusoidal parameter estimation problem. Then the sinusoidal parameters are estimated by generalizing the multiple signal classification (MUSIC) algorithm for single-experiment data. The proposed method, referred to as the MUSIC-type algorithm, approximates the Cramer-Rao bound (CRB) in terms of the mean square errors (MSKs) for different signal-to-noise ratios (SNRs) and separations of multipath components. Simulation results show that the MUSIC-type algorithm performs better than the classical correlation approach and the conventional MUSIC method for the closely spaced components in multipath environments.

Published in:

Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE  (Volume:2 )

Date of Conference:

21-25 March 2004

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