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arXiv · 2002.10167

Joint blind calibration and time-delay estimation for multiband ranging

Tarik Kazaz·Mario Coutino·Gerard J. M. Janssen·Alle-Jan van der Veen
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Abstract

In this paper, we focus on the problem of blind joint calibration of multiband transceivers and time-delay (TD) estimation of multipath channels. We show that this problem can be formulated as a particular case of covariance matching. Although this problem is severely ill-posed, prior information about radio-frequency chain distortions and multipath channel sparsity is used for regularization. This approach leads to a biconvex optimization problem, which is formulated as a rank-constrained linear system and solved by a simple group Lasso algorithm.Numerical experiments show that the proposed algorithm provides better calibration and higher resolution for TD estimation than current state-of-the-art methods.

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Tarik Kazaz, Mario Coutino, Gerard J. M. Janssen, Alle-Jan van der Veen. 2020-02-24. Joint blind calibration and time-delay estimation for multiband ranging. https://arxiv.org/abs/2002.10167

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