Ultradense 2-to-4 decoder in quantum-dot cellular automata technology based on MV32 gate

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Abstract

Quantum-dot cellular automata (QCA) is an alternative complementary metal-oxide-semiconductor (CMOS) technology that is used to implement high-speed logical circuits at the atomic or molecular scale. In this study, an optimal 2-to-4 decoder in QCA is presented. The proposed QCA decoder is designed using a new formulation based on the MV32 gate. Notably, the MV32 gate has three inputs and two outputs, which is equivalent two 3-input majority gates, and operates based on cellular interactions. A multilayer design is suggested for the proposed decoder. Subsequently, a new and efficient 3-to-8 QCA decoder architecture is presented using the proposed 2-to-4 QCA decoder. The simulation results of the QCADesigner 2.0.3 software show that the proposed decoders perform well. Comparisons show that the proposed 2-to-4 QCA decoder is superior to the previously proposed ones in terms of cell count, occupied area, and delay.

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Abbasizadeh, A., & Mosleh, M. (2020). Ultradense 2-to-4 decoder in quantum-dot cellular automata technology based on MV32 gate. ETRI Journal, 42(6), 912–921. https://doi.org/10.4218/etrij.2019-0068

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