Efficient Design of Logical Structures and functions using Nanotechnology Based Quantum Dot Cellular Automata Design

Lakshmi, S. Karthigai; Athisha, G.

doi:10.5120/726-1019

Cited by 17 publications

(21 citation statements)

References 13 publications

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“…1 a , the left portion shows +1 polarisation as ‘1’, and the right portion shows −1 polarisation as ‘0’ in logic value. The basic elements of QCA such as majority gate, inverter [22, 23], wires etc. are made by QCA cells.…”

Section: Fundamental Concepts and Elementsmentioning

confidence: 99%

“…The clock concept in the QCA differs from the conventional VLSI circuits because it is not only to synchronise, but also to control information flow. Since there is not any external power, the clock in the QCA provides the power to run the circuits [23]. Another difference is that the clock in the QCA consists of four clock phases such as ‘Switch, Hold, Release and Relax’.…”

Section: Fundamental Concepts and Elementsmentioning

confidence: 99%

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Improving logic function synthesis, through wire crossing reduction in quantum‐dot cellular automata layout

Taherifard

2015

IET Circuits, Devices & Systems

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Quantum-dot cellular automata, as the successor of metal-oxide semiconductor field-effect transistors, are one of the promising nanotechnology devices, which have attracted myriad researchers in the recent decade. In this technology, coplanar wire crossing is one of the unique specifications that can reduce its reliability. In the present study, a heuristic method is introduced using the Karnaugh-Map (K-Map) to minimise the number of wire crossing as the first step. Afterwards, it attempts to replace each wire crossing with three non-wire crossing XOR gates that reduce all wire crossings to zero as the second step. Experimental results reveal that, reducing wire crossings to zero, the authors method for 3-variable functions lowers the number of gates about 54, 42, 58 and 59%, respectively, in comparison with K-Map, Genetic, Gate-Optimise and Universal Quantum-dot Cellular Automata Logic Gate (UQCALG) methods. For 4-variable functions, their method decreases the number of gates almost 64 and 58%, respectively.

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Section: Fundamental Concepts and Elementsmentioning

confidence: 99%

Section: Fundamental Concepts and Elementsmentioning

confidence: 99%

Improving logic function synthesis, through wire crossing reduction in quantum‐dot cellular automata layout

Taherifard

2015

IET Circuits, Devices & Systems

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“…As yet, extensive researches in QCA technology are done to design and simulate digital logic circuits, such as basic gates, adders, multipliers, dividers, multiplexers, shift registers, memories, and ALUs . One of the most important logical circuits, widely used in a variety of digital circuits, such as RAMs, ALUs and decoders, is multiplexer.…”

Section: Introductionmentioning

confidence: 99%

A novel design of multiplexer based on nano‐scale quantum‐dot cellular automata

Mosleh

2018

Concurrency and Computation

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Summary Quantum‐dot Cellular Automata (QCA) is known as one of best alternative technologies for CMOS, on nano‐scale dimensions, which allows digital circuits to be designed with high speed and density. In this paper, a novel 2:1 multiplexer in QCA technology is proposed. This proposed QCA multiplexer uses a new formulation based on an introduced MV32 gate. The MV32 gate has three inputs and two outputs and operates based on cell interactions. A multi‐layer design for proposed 2:1 QCA multiplexer is provided. The simulation results obtained by the software, QCADesigner 2.0.3, confirm that the proposed multiplexer works well and can be applied as a high performance design, in QCA technology. Moreover, the 2:1 QCA multiplexer is used to create 4:1 and 8:1 QCA multiplexers. The results of comparisons show that the proposed structures have so better performance than many previous designs.

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“…The number of cells of the proposed gates and their polarities has been compared with previous structures [8][9][10]. Comparisons between the proposed and conventional XOR gates are given in Table 2.…”

Section: Xor Gatementioning

confidence: 99%

“…(XOR) and exclusive-OR (NOR) gates are also used in digital circuits, have been proposed by different authors [8][9][10]. The design has complexity of cells and either coplanar crossovers or multiple layers to implement.…”

Section: Xor Gatementioning

confidence: 99%

A novel idea of pseudo-code generator in quantum-dot cellular automata (QCA)

Ahmad

Mustafa

Wani

et al. 2014

Int. J. Simul. Multidisci. Des. Optim.

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-In present work, we have implemented the pseudo-code (PN-code) generator using quantum-dot cellular (QCA) technology. Simulation results are obtained from QCA designer software. The PN-code generation is of paramount importance for any secure communication system. The complex code generated is used to scramble incoming plain text. At the receiving end, the same code is generated and successfully used to decrypt the transmitted data. The algorithm for generating noise signal is quite simple. The simplicity of the circuit along with the complexity of the code generated makes the circuit attractive for secure message communication.

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Efficient Design of Logical Structures and functions using Nanotechnology Based Quantum Dot Cellular Automata Design

Abstract: ABSTRACT

Cited by 17 publications

References 13 publications

Improving logic function synthesis, through wire crossing reduction in quantum‐dot cellular automata layout

Improving logic function synthesis, through wire crossing reduction in quantum‐dot cellular automata layout

A novel design of multiplexer based on nano‐scale quantum‐dot cellular automata

A novel idea of pseudo-code generator in quantum-dot cellular automata (QCA)

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