An efficient design of full adder in quantum-dot cellular automata (QCA) technology

Mohammadi, Mohammad; Mohammadi, Majid; Gorgin, Saeid

doi:10.1016/j.mejo.2016.02.004

Cited by 120 publications

(78 citation statements)

References 26 publications

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“…The two polarizations framed by these electrons are utilized to represent a logic value of 1 and a logic value of 0 as shown on the left and on the right of figure 1. [4,[8][9][19][20]. The QCA cells contain the interconnecting wires .An example of a QCA wire is shown in figure 2.…”

Section: Qca Basicsmentioning

confidence: 99%

“…Clocking in QCA make electrons either tunnel between the wells or stay in their current situations [2,[4][5][6][7][8][13][14][15]. In this way, data can flow in a specific direction or forced to stay in their positions.…”

Section: Clockingmentioning

confidence: 99%

“…For transistor circuit, the power dissipation due to leakage current is a big problem [4][5][6][7]. A possible alternative to these problems is Nanotechnology based Quantum-dot cellular automata (QCA) circuits [8][9][10][11][12][13][14][15][16][17]. The focus of this paper is on design of efficient Mirror adder circuit [3].…”

Section: Introductionmentioning

confidence: 99%

“…QCA gives an altogether different computation platform than conventional CMOS, one in which polarization, instead of current, contains the digital information and one in which the cells themselves, rather than interconnecting wires, transmit this information all through the circuit [6,8,[14][15]. This section begins with a concise diagram of QCA cells and the wires that are made out of QCA cells.…”

Section: Introductionmentioning

confidence: 99%

“…This section begins with a concise diagram of QCA cells and the wires that are made out of QCA cells. This is followed by a depiction of the QCA 3-input majority gate and the different gate structures that can be framed by reconfiguring this fundamental gate [8,[15][16][17].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Design of Efficient Mirror Adder in Quantum- Dot Cellular Automata

Mishra

Chattopadhyay

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Section: Qca Basicsmentioning

confidence: 99%

Section: Clockingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of Efficient Mirror Adder in Quantum- Dot Cellular Automata

Mishra

Chattopadhyay

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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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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A novel ultra‐dense and low‐power structure for fault‐tolerant three‐input majority gate in QCA technology

Ahmadpour

Mosleh

2019

Concurrency and Computation

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Quantum-dot cellular automata (QCA) is a very interesting nanoscale technology. Ultradense structure and ultralow power consumption are the most important features of QCA compared to CMOS. QCA circuits often suffer from various types of manufacturing defects and are therefore prone to fault. Hence, the design of fault-tolerant circuits in QCA technology is considered a necessity. In this paper, a novel fault-tolerant three-input majority gate is presented using 12 simple and rotated cells in QCA technology. The proposed structure is investigated against all kinds of cell omission, extra-cell deposition, and cell displacement defects. The simulation results are verified by QCADesigner 2.0.3, and it showed 100%, 89.29%, and 100% tolerance against single-cell omission, double-cell omission, and extra-cell deposition, respectively. In addition, the proposed structure is robust against cell displacement defects. Finally, using the proposed structure, a novel coplanar full adder is presented. The results were compared and indicated that the proposed designs are more reliable than the existing designs. Furthermore, QCAPro power estimator tool was employed to estimate the energy dissipation of the proposed structure. KEYWORDSfault-tolerant, nanotechnology, quantum-dot cellular automata (QCA), three-input majority gate INTRODUCTIONIn the near future, complementary metal-oxide-semiconductor (CMOS) technology is expected to reach the end of its way due to limitations such as switching speed, scaling specifications, high cost of lithography, and thermal challenges. 1-3 CMOS technology also suffers from lower tolerability and manufacturing diversity, which have a negative impact on the reliability of these devices, leading to an increase in the number of faults. Future CMOS constraints have led many researchers to design nanoscale devices. 4 Quantum-dot cellular automata (QCA) has appeared as a favorable new innovation for future integrated circuit generation, which can overcome CMOS constraints. 3 The simplest element in QCA technology is a square cell with four quantum dots located in its four corners. The transfer of information takes place by columbic interactions between the fundamental elements (cells) instead of electrical current. [3][4][5] Up to now, extensive attempts have been made on the design of various digital circuits such as multipliers, 6-8 adders, 9-19 memory devices, 20-23 arithmetic and logic unit, 24 and multiplexers [25][26][27][28][29] in QCA technology, but according to a conducted study by Bahar et al, 30 the high complexity of nanocircuit structures results in the need to design high fault-tolerant structures. The QCA technology encounters with a variety of manufacturing defects such as extra-cell deposition, cell omission, cell displacement, or cell misalignment that make QCA circuits unusable. 31,32 A three-input majority gate is considered one of the main basic gate in the QCA circuits. 33,34 Providing robust structures for the majority gate will result in the creation of fault-tolerant logic cir...

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An efficient design of full adder in quantum-dot cellular automata (QCA) technology

Cited by 120 publications

References 26 publications

Design of Efficient Mirror Adder in Quantum- Dot Cellular Automata

Design of Efficient Mirror Adder in Quantum- Dot Cellular Automata

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

A novel ultra‐dense and low‐power structure for fault‐tolerant three‐input majority gate in QCA technology

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