Fault Tolerance and Temperature Stability: The Dynamic Error Estimation in Quantum-Dot Cellular Automata
Soudip Sinha Roy · 2017
Quantum-dot cellular automata is a transistorless quantum-scale computational approach which perceives the digital logic operations by fastest quantum tunneling. This paper contributes a proficient comparator layout and a decoder segment design without involving any wire crossing. The proposed 32 cells comparator has realized by Layered T gate approach of QCA, which has 19.20% less effective area as reported in paper. The fault tolerance analysis of proposed comparator has graphically analyzed to exhibit the robustness of the proposed comparator. Furthermore, one 2 to 4 line decoder has proposed which exhibits 37.82 % optimization in area occupancy compared to earlier decoder design. Temperature stability factor is proposed for recognizing the circuit dynamic faults. Dynamic temperature stability of the 2 to 4 line proposed decoder has been analyzed which estimates the circuit stability and specifies the suitable operating temperature zone. This contribution proposes a novel technique for estimating the dynamic errors in quantum-dot cellular automata circuits. QCADesigner 2.0.3 an open source software for QCA circuit simulation have used in purpose of all the circuit simulations in this paper.