A hardware-friendly arithmetic method and efficient implementations for designing digital fuzzy adders

Navi, Keivan; Doostaregan, Akbar; Moaiyeri, Mohammad Hossein; Hashemipour, Omid

doi:10.1016/j.fss.2011.06.006

Cited by 23 publications

(11 citation statements)

References 24 publications

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“…The quantum cost of a reversible circuit is measured by counting the primitive 1×1 and 2×2 quantum gates like NOT, CNOT, CV, and CV † [17]. In fact, there are three 1×1 quantum gates which can be applied on a qubit as basic operations in quantum computers and represented by (1), (2) and (3) as NOT, V, and V † matrices, respectively. matrices.…”

Section: Fundamentalsmentioning

confidence: 99%

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A Novel 4×4 Universal Reversible Gate as a Cost Efficient Full Adder/Subtractor in Terms of Reversible and Quantum Metrics

Moghimi

Reshadinezhad

2015

IJMECS

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Abstract-This paper proposes a new 4×4 reversible logic gate which is named as MOG. Reversible gates are logical basic units, having equal number of input and output lines, which can reduce power dissipation in digital systems design through their reversibility feature; because there is a one-to-one corresponding between their input and outputs vectors. The most significant aspect of the MOG gate is that it is a universal gate and has the ability of calculating any logical function on its own. We have also proposed quantum representation of the MOG gate with optimal quantum cost equal to 11. Then, it has been proved that MOG gate can be used to produce a cost efficient reversible full adder/subtractor cell in terms of reversible and quantum metrics. The proposed reversible full adder/subtractor design using MOG gate is a completely optimized circuit in terms of the number of reversible gates, the number of constant inputs, and the number of garbage outputs because it can work with the minimum possible amounts of these reversible metrics. Additionally, it is more efficient than the existing counterparts in terms of quantum cost. The full adder/subtractor cell is an important circuit in VLSI and digital signal processing applications. A lot of works have been done toward designing reversible full adder/subtractors in the literature; but there is no an optimized design with quantum implementation. To prove the applicability of the proposed design in large processing scales, we have constructed 8-bits reversible ripple carry full adder/subtractor circuit using MOG gates. Results have shown the superiority of our proposed design compared with other 8-bits similar designs.

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Section: Fundamentalsmentioning

confidence: 99%

“…Addition/Subtraction is one of the basic structures in many VLSI systems such as microprocessors, digital computing and signal processing systems and nano-micro system [1,2]. Full adder is one of the most important units in arithmetic circuits, and its performance could affect the efficiency of the whole system [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

A Novel 4×4 Universal Reversible Gate as a Cost Efficient Full Adder/Subtractor in Terms of Reversible and Quantum Metrics

Moghimi

Reshadinezhad

2015

IJMECS

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“…Such adders are interesting group of circuits, which allow to implement FL systems in different ways. Example circuits of this, reported in [26], are a multivalued (fuzzy) analog adders operating in the voltage and the current mode. These adders, unlike the classic solutions used for adding voltages or currents, in addition to the S (SUM) signal, also have the C OUT (Carry Out) output terminal, while both the S and the C OUT signals are multivalued.…”

Section: Selected Fuzzy Logic Operatorsmentioning

confidence: 99%

Parallel, asynchronous, fuzzy logic systems realized in CMOS technology

Talaśka

2019

Adv Comput Math

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Fuzzy systems play an important role in many industrial applications. Depending on the application, they can be implemented using different techniques and technologies. Software implementations are the most popular, which results from the ease of such implementations. This approach facilitates modifications and testing. On the other hand, such realizations are usually not convenient when high data rate, low cost per unit, and large miniaturization are required. For this reason, we propose efficient, fully digital, parallel, and asynchronous (clock-less) fuzzy logic (FL) systems suitable for the implementation as ultra low-power-specific integrated circuits (ASICs). On the basis of our former work, in which single FL operators were proposed, here we demonstrate how to build larger structures, composed of many operators of this type. As an example, we consider Lukasiewicz neural networks (LNN) that are fully composed of selected FL operators. In this work, we propose FL OR, and AND Lukasiewicz neurons, which are based on bounded sum and bounded product FL operators. In the comparison with former analog implementations of such LNNs, digital realization, presented in this work, offers important advantages. The neurons have been designed in the CMOS 130nm technology and thoroughly verified by means of the corner analysis in the HSpice environment. The only observed influence of particular combinations on the process, voltage, and temperature parameters was on delays and power dissipation, while from the logical point of view, the system always worked properly. This shows that even larger FL systems may be implemented in this way. Keywords Fuzzy logic systems • FL operators • FL neural networks • Asynchronous circuits • Parallel circuits • CMOS implementation

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“…[20][21][22][23] Some Current Mode Full Adder cells have been presented in Refs. [25][26][27]30]. They are based on linear addition and subtraction of input currents, and benefit from design simplicity.…”

Section: Literature Reviewmentioning

confidence: 99%

“…It is possible to use CML Full Adder presented in Ref. [25] in any MVL system, although it is mainly designed for fuzzy logic neither for Ternary logic nor any other digital systems. Since the ability of generating full-swing outputs even with non-full-swing input signals is one of the key characteristics of circuits in discrete systems, therefore, using fuzzy circuits 25 in digital systems may cause some difficulties in their functionality.…”

Section: Literature Reviewmentioning

confidence: 99%

New Current-Mode Ternary Full Adder Circuits Based on Carbon Nanotube Field Effect Transistor Technology

Moradi

Navi

2016

j comput theor nanosci

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This paper presents novel designs of a low power and complexity Current Mode 1-bit Full Adder cell based on CNTFET technology. Three main parts make key roles in their structure: (1) the first part which is responsible to convert current to voltage; (2) threshold detectors (TD); and (3) parallel paths through which the output currents flow. Utilizing CNTFET technology offers significant improvements in adjusting threshold voltages which is material for setting threshold detectors switching point, regarding its unique characterizations. These new designs benefit from the elimination of any constant current source unlike the former presented structures, which leads to the reduction of static power dissipation and better performance. The 2nd proposed current mode Ternary Full Adder operates faster than the 1st one in addition to the advantages of its simple design, less power consumption and transistor counts, while the 3rd design benefits from less transistor counts and simple design comparing the former designs.

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A hardware-friendly arithmetic method and efficient implementations for designing digital fuzzy adders

Cited by 23 publications

References 24 publications

A Novel 4×4 Universal Reversible Gate as a Cost Efficient Full Adder/Subtractor in Terms of Reversible and Quantum Metrics

A Novel 4×4 Universal Reversible Gate as a Cost Efficient Full Adder/Subtractor in Terms of Reversible and Quantum Metrics

Parallel, asynchronous, fuzzy logic systems realized in CMOS technology

New Current-Mode Ternary Full Adder Circuits Based on Carbon Nanotube Field Effect Transistor Technology

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