Abstract
Two-dimensional (2-D) nonlinear-phase finite impulse response (FIR) filters have found many applications in signal processing and communication systems. This paper considers the elliptic-error and phase-error constrained least-squares design of 2-D nonlinear-phase FIR filters, and develops a matrix-based algorithm to solve the design problem directly for the filter’s coefficient matrix rather than vectorizing it first as in the conventional methods. The matrix-based algorithm makes the design to consume much less design time than existing algorithms. Design examples and comparisons with existing methods demonstrate the effectiveness and high efficiency of the proposed design method.
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This work was supported in part by the National Nature Science Foundation of China under Grants 61175001, 61333009 and 61304142, and in part by the National Basic Research Program of China under Grant 2012CB821200.
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Hong, X., Lai, X. & Zhao, R. A fast design algorithm for elliptic-error and phase-error constrained LS 2-D FIR filters. Multidim Syst Sign Process 27, 477–491 (2016). https://doi.org/10.1007/s11045-014-0312-5
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DOI: https://doi.org/10.1007/s11045-014-0312-5