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Extending the concept of IIR filtering to array processing using approximate spatial IIR structure

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Extending the concept of IIR filtering to array processing using approximate spatial IIR structure

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Title: Extending the concept of IIR filtering to array processing using approximate spatial IIR structure
Author: Wen, Fuxi; Ng, Boon Poh; Reddy, Vinod Veera
Copyright year: 2011
Abstract: Various array processing techniques applied to uniform linear arrays are involuntarily realized using structures that are analogous to finite impulse response filters. This observation leads to the following question: “can we extend infinite impulse response (IIR) filtering to array processing?”. In this paper, we introduce the concept of IIR array in spatial domain. Note that IIR array here does not mean time-domain IIR filtering for array beamforming which is commonly understood. This paper is dedicated to the study of an alternate approach for array signal processing which defines IIR structure in spatial domain. To illustrate the applicability of the concept of IIR array, we propose a new direction-of-arrival estimation technique as well as a beamformer with the spatial domain IIR array implementation. The performance of the proposed methods are comparable to the existing techniques. These illustrations are intended to introduce a new approach which potentially can offermore degrees of freedom to control the performance of the array and reduce the complexity of the system for a desired performance.
Subject: DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing.
Type: Journal Article
Series/ Journal Title: Multidimensional systems and signal processing
School: School of Electrical and Electronic Engineering
Rights: © 2011 Springer Science+Business Media. This is the author created version of a work that has been peer reviewed and accepted for publication by Multidimensional Systems and Signal Processing, Springer Science+Business Media. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1007/s11045-011-0163-2].
Version: Accepted version

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