Hari C. Reddy

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A generalized formulation is developed that allows the derivation of various new 2-D VLSI filter structures, without global broadcast, using different filter sub-blocks and their interconnections (frameworks). With this formulation, latticetype and direct-form structures realizing general 2-D IIR and FIR transfer functions, IIR transfer functions with(More)
This paper presents two-dimensional (2-D) VLSI digital filter structures possessing various symmetries in the filter magnitude response. For this purpose, four Type-1 and four Type-2 power-efficient and cost-effective 2-D magnitude symmetry filter architectures possessing diagonal, fourfold rotational, quadrantal, and octagonal symmetries with reduced(More)
By means of the delta operator, a new type of CNN, the (δ,c)-CNN, is introduced. It is a superclass of continuoustime (CT) and discrete-time (DT) CNNs with any saturation-, high-gain-, or hardlimiting sign-nonlinearity. It is shown that the (δ,c)-CNN allows continuous transition between different types of nonlinearities and between CTand DT-CNNs, providing(More)
In this paper, we propose two new twodimensional (2-D) IIR and FIR filter architectures for 2-D transfer function with diagonal symmetry. The presented type-I structure with diagonal symmetry has the lowest number of multipliers, and zero latency without sacrificing the number of the delay elements. Importantly, the proposed type-II IIR filter possesses(More)
In this paper, we propose two new twodimensional (2-D) IIR and FIR filter architectures for 2-D transfer function using fourfold rotational symmetry. The presented type-I structure with fourfold rotational symmetry has the lowest number of multipliers, and zero latency. Importantly, the proposed type-II IIR filter possesses high speed, local broadcast, and(More)
This paper presents an optimization-based 2-D filter design procedure that utilizes the recently derived symmetry constraints in gamma domain. The gamma domain transfer function has significant coefficient sensitivity advantage compared to the same procedure applied to the conventional q-operator based design with the same symmetry constraints.