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| Content Provider | IET Digital Library |
|---|---|
| Author | Singh, Gurmohan Raj, Balwinder Sarin, Rakesh K. |
| Abstract | Emerging nanoscale computing structure quantum-dot cellular automata (QCA) is evolving as a possible replacement for complementary metal–oxide–semiconductor technology in near future. Being a new technology, it is prone to various types of fabrication-related faults and process variations. So, QCA-based circuits are prone to errors, and therefore pose significant reliability-related issues. Hence, there is an emerging need to design fault-tolerant QCA-based circuits to mitigate the reliability issues. This study first presents QCA-based new designs of 2-input Exclusive-OR gate and 1 bit full adder using conventional design approach without redundant QCA cells. Then, the fault tolerance has been implemented in these designs by introducing redundant QCA cells. The proposed circuits exhibit significant improvements in fault-tolerant capability against cell omission, misalignment, displacement, and extra cell deposition defects. The proposed fault-tolerant designs have been compared with existing designs in terms of generalised design metrics of QCA circuits. Energy dissipation results have been computed for the proposed fault-tolerant circuits using accurate QCAPro power estimator tool. Influence of temperature variations on the polarisation of the proposed fault-tolerant circuits has also been investigated. The functionality of the proposed circuits has been verified with QCADesigner version 2.0.3 tool. |
| Starting Page | 638 |
| Ending Page | 644 |
| Page Count | 7 |
| ISSN | 1751858X |
| Volume Number | 12 |
| e-ISSN | 17518598 |
| Issue Number | Issue 5, Sep (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-cds/12/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-cds.2017.0505 |
| Journal | IET Circuits, Devices & Systems |
| Publisher Date | 2018-03-13 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 2-input Exclusive-OR Gate Adder Cellular Automata Circuit Reliability Complementary Metal-oxide-semiconductor Technology Digital Circuit Design, Modelling And Testing Energy Dissipation Extra Cell Deposition Defect Fault Diagnosis Fault Tolerance Fault-tolerant Design Logic And Switching Circuit Logic Circuit Logic Design Method Logic Element Logic Gate Nanoscale Computing Structure Network Synthesis QCA Based Circuit QCADesigner Version 2.0.3 Tool QCAPro Power Estimator Tool Quantum Dots Quantum-dot Cellular Automata Redundant QCA Cell Reliability Reliability-related Issue Word Length 1 Bit |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Electrical and Electronic Engineering |
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