An adaptive sensor array using an affine combination of two filters

Authors:
Tõnu Trump
Affiliations:
Tallinn University of Technology, Department of Radio and Telecommunication Engineering, Tallinn, Estonia
Venue:
SITE'12 Proceedings of the 11th international conference on Telecommunications and Informatics, Proceedings of the 11th international conference on Signal Processing
Year:
2012

Citing 4
Cited 0

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Abstract

We study an adaptive sensor array that uses a combination of two filters as the adaptive scheme to update the beamformer weights. The Generalized Sidelobe Canceller configuration is used for computing the adaptive weights of the beamformer. As the adaptive scheme we use the recently proposed affine combination of two adaptive filters. The filters are joined with help of an adaptive parameter. This way the scheme forms a two stage adaptive structure. The combination of two adaptive filters is a new interesting way of obtaining both fast initial convergence and small steady state error at the same time. We present the results of a steady state analysis of the scheme in a sensor array processing scenario. The theoretical results are verified in our simulation study.