A Novel Time Delay Estimation Interpolation Algorithm Based on Second-Order Cone Programming

Zhixin LIU  Dexiu HU  Yongjun ZHAO  Chengcheng LIU  

Publication
IEICE TRANSACTIONS on Communications   Vol.E99-B   No.6   pp.1311-1317
Publication Date: 2016/06/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2015EBP3386
Type of Manuscript: PAPER
Category: Fundamental Theories for Communications
Keyword: 
interpolation,  time delay estimation,  sub-sample accuracy,  objection function,  Second-order Cone programming,  

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Summary: 
Considering the obvious bias of the traditional interpolation method, a novel time delay estimation (TDE) interpolation method with sub-sample accuracy is presented in this paper. The proposed method uses a generalized extended approximation method to obtain the objection function. Then the optimized interpolation curve is generated by Second-order Cone programming (SOCP). Finally the optimal TDE can be obtained by interpolation curve. The delay estimate of proposed method is not forced to lie on discrete samples and the sample points need not to be on the interpolation curve. In the condition of the acceptable computation complexity, computer simulation results clearly indicate that the proposed method is less biased and outperforms the other interpolation algorithms in terms of estimation accuracy.