An Optimization of Smoothing Preprocessing for Correlated Signal Parameter Estimation

Kei SAKAGUCHI  Jun-ichi TAKADA  Kiyomichi ARAKI  

IEICE TRANSACTIONS on Communications   Vol.E83-B   No.9   pp.2117-2123
Publication Date: 2000/09/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antenna and Propagation
subspace-based superresolution algorithm,  correlated signal,  smoothing preprocessing,  optimization,  smoothed equivalent diversity profile,  

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An optimization of the smoothing preprocessing for the correlated signal parameter estimation was considered. Although the smoothing factor (the number of subarrays) is a free parameter in the smoothing preprocessing, a useful strategy to determine it has not yet been established. In this paper, we investigated thoroughly about the smoothing factor and also proposed a new scheme to optimize it. The proposed method, using the smoothed equivalent diversity profile (SED profile), is able to evaluate the effect of smoothing preprocessing without any a priori information. Therefore, this method is applicable in the real multipath parameter estimation.