An inverse QRD-RLS algorithm for linearly constrained minimum variance adaptive filtering

Authors:
CéSar A. Medina S.;Raimundo Sampaio-Neto
Affiliations:
Center of Telecommunications Studies (CETUC), Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Brazil;Center of Telecommunications Studies (CETUC), Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Brazil
Venue:
Signal Processing
Year:
2013

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Abstract

In this paper an inverse QR decomposition based recursive least-squares algorithm for linearly constrained minimum variance filtering is proposed. The proposed algorithm is numerically stable in finite precision environments and is suitable for implementation in systolic arrays or DSP vector architectures. Its performance is illustrated by simulations of a blind receiver for a multicarrier CDMA communication system and compared with previously proposed inverse QR decomposition recursive least-squares algorithms.