A Super-Resolution Time Delay Estimation Based on the MUSIC-Type Algorithm

Feng-Xiang GE  Qun WAN  Jian YANG  Ying-Ning PENG  

IEICE TRANSACTIONS on Communications   Vol.E85-B   No.12   pp.2916-2923
Publication Date: 2002/12/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antenna and Propagation
super-resolution time delay estimation,  MUSIC-type algorithm,  single-experiment data,  correlation,  

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The problem of the super-resolution time delay estimation of the real stationary signals is addressed in this paper. The time delay estimation is first converted into a frequency estimation problem. Then a MUSIC-type algorithm to estimate the subsequent frequency from the single-experiment data is proposed, which not only avoids the mathematical model mismatching but also utilizes the advantages of the subspace-based methods. The mean square errors (MSEs) of the time delay estimate of the MUSIC-type method for varying signal-to-noise (SNR) and separation of two received signal components are shown to illustrate that they approximately coincide with the corresponding Cramer-Rao bound (CRB). Finally, the comparison between the MUSIC-type method and the other conventional methods is presented to show the advantages of the proposed method in this paper.