On the impact of the synchronization constraint and interconnections in quantum-dot cellular automata

Torres, Frank Sill; Silva, Pedro Arthur; Fontes, Geraldo; Walter, Marcel; Nacif, José Augusto M.; Ferreira, Ricardo; Neto, Omar P. Vilela; Chaves, Jeferson F.; Wille, Robert; Niemann, Philipp; Große, Daniel; Drechsler, Rolf

doi:10.1016/j.micpro.2020.103109

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…A different approach of synchronization problem was presented in [14] using the USE clocking scheme. This approach uses a heuristic algorithm based on a divide-and-conquer strategy in order to find solution for the signal synchronization problem.…”

Section: A Qca Circuits Clockingmentioning

confidence: 99%

“…Also, if a larger circuit is needed to be designed, the complexity of these methods is raised in an almost exponential manner. In contrast to the above, a very interesting solution provided in [14] results in smaller and less complex circuits. In this approach the synchronization is achieved by applying a heuristic algorithm in order to reduce the circuit size.…”

Section: Introductionmentioning

confidence: 96%

“…QCA circuits' design rules and the technology's physical limitations very often result in ruining the synchronization of the circuit's output or intermediate signals. Many methods, that trying to tackle this problem, have been presented in the literature [11], [12], [13], [14]. These clocking schemes are dividing the circuit in areas.…”

Section: Introductionmentioning

confidence: 99%

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Synchronization in Quantum-Dot Cellular Automata Circuits and Systems

Liolis

Mardiris

Karafyllidis

2020

IEEE Open J. Nanotechnol.

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Signal synchronization of large scale Quantum-dot Cellular Automata (QCA) circuits is one of the most complex QCA design challenges. More specifically, the QCA circuits synchronization problem, especially in the large circuits, is characterized as rather complex due to technology constraints. In this paper, by extensively analyzing the most important properties of the signal synchronization problem in QCA circuits, we propose an efficient design methodology to tackle the problem, based on the well-known from computer science, Firing Squad Synchronization Problem (FSSP). Comparing FSSP with the QCA circuits synchronization problem many similarities can be found. Among the numerous FSSP's algorithmic solutions in literature, the Mazoyer algorithm has proven to be the most efficient one. In this paper, a novel design and implementation in QCA technology of this algorithm is presented. Moreover, by the appropriate modification of the Mazoyer algorithm, we are able to propose a generic synchronization design methodology for QCA circuits and systems. This method is enhanced by a novel freezing technique, that makes it applicable to any QCA circuit and system as manifested by our corresponding simulation results. The proposed synchronization methodology is a universal design tool, that can be applied to exiting designs without increasing the complexity.

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Section: A Qca Circuits Clockingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%