Low Complexity Design of Ripple Carry and Brent–Kung Adders in QCA

Pudi, Vikramkumar; Sridharan, K.

doi:10.1109/tnano.2011.2158006

Cited by 180 publications

(99 citation statements)

References 32 publications

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“…Further, the cells are placed on a grid with a cell center-to-center distance of 20 nm. Although the proposed 3-D adder uses more inverters than the 2-D adder II [9] as shown in the table, the proposed 3-D architecture can save cell count and area much more than that incurred by additional inverters used in the 3-D adder, which is further illustrated in Fig. 4 and Fig.…”

Section: -D Qca Basic Gatesmentioning

confidence: 93%

“…4, it can be seen that the proposed 3-D adder saves more than 100 cells compared with the conventional 2-D adder I. Furthermore, it uses about half as many cells as the best 2-D design to date [9]. The area comparison of 2-D and 3-D adders is shown in Fig.…”

Section: -D Qca Basic Gatesmentioning

confidence: 94%

“…The proposed 3-D adder is compared with its 2-D counterparts [8,9], as shown in Table I. Cells for all designs are assumed to have a height of 18 nm and a width of 18 nm while the quantum dots have a diameter of 5 nm (same as the assumptions of [9]).…”

Section: -D Qca Basic Gatesmentioning

confidence: 99%

“…Cells for all designs are assumed to have a height of 18 nm and a width of 18 nm while the quantum dots have a diameter of 5 nm (same as the assumptions of [9]). Further, the cells are placed on a grid with a cell center-to-center distance of 20 nm.…”

Section: -D Qca Basic Gatesmentioning

confidence: 99%

See 3 more Smart Citations

Design of 3-D quantum-dot cellular automata adders

Liu

Swartzlander

2015

IEICE Electron. Express

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A three-dimensional (3-D) QCA architecture is proposed in this express. The design of a 3-D quantum-dot cellular automata (QCA) full adder based on 3-D inverters and majority gates is presented and compared with its 2-D counterparts. The 3-D adder uses over 46% less cells and occupies 40% less area compared with the best 2-D design. The proposed 3-D QCA architecture offers an additional dimension for computation, which is not available in current CMOS technology.

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Section: -D Qca Basic Gatesmentioning

confidence: 93%

Section: -D Qca Basic Gatesmentioning

confidence: 94%

Section: -D Qca Basic Gatesmentioning

confidence: 99%

Section: -D Qca Basic Gatesmentioning

confidence: 99%

See 2 more Smart Citations

Design of 3-D quantum-dot cellular automata adders

Liu

Swartzlander

2015

IEICE Electron. Express

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“…QCA full adder has been well studied. Some representative QCA adders are [19,[27][28][29][30][31]. The QCA carry flow adder reported in [19] is a layout optimized multilayer full adder.…”

Section: 2mentioning

confidence: 99%

Nanosensor Data Processor in Quantum-Dot Cellular Automata

Yao

Zein-Sabatto

Shao

et al. 2014

Journal of Nanotechnology

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Quantum-dot cellular automata (QCA) is an attractive nanotechnology with the potential alterative to CMOS technology. QCA provides an interesting paradigm for faster speed, smaller size, and lower power consumption in comparison to transistor-based technology, in both communication and computation. This paper describes the design of a 4-bit multifunction nanosensor data processor (NSDP). The functions of NSDP contain (i) sending the preprocessed raw data to high-level processor, (ii) counting the number of the active majority gates, and (iii) generating the approximate sigmoid function. The whole system is designed and simulated with several different input data.

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Design of novel efficient adder and subtractor for quantum‐dot cellular automata

Hayati

Rezaei

2014

Circuit Theory & Apps

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Summary Quantum‐dot cellular automata (QCA) is one of the new emerging technologies being investigated as an alternative to complementary metal oxide semiconductor technology. This paper proposes optimized one‐bit full adder (FA) for implementation in QCA. The fault effects at the proposed FA outputs due to the missing cell defects are analyzed, and the test vectors for detection of all faults are identified. Also, the efficient designs of one‐bit full subtractor (FS), one‐bit FA/FS and four‐bit carry flow adder (CFA) are presented using the proposed FA. These structures are designed and simulated using QCADesigner software. The proposed designs are compared with other previous works. In comparison with the best previous design, the proposed FA has 25% and 26% improvement in cells count and area, respectively, and it is faster. For the proposed FS, FA/FS and CFA, the obtained results confirm that these designs are more efficient in terms of area, cell count and delay. Therefore, the implementation of these designs may lead to the efficient use of the calculative unit in various applications, which may be used as a basic building block of a general purpose nanoprocessor. Copyright © 2014 John Wiley & Sons, Ltd.

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Low Complexity Design of Ripple Carry and Brent–Kung Adders in QCA

Cited by 180 publications

References 32 publications

Design of 3-D quantum-dot cellular automata adders

Design of 3-D quantum-dot cellular automata adders

Nanosensor Data Processor in Quantum-Dot Cellular Automata

Design of novel efficient adder and subtractor for quantum‐dot cellular automata

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