Design of low power 5-input majority voter in quantum-dot cellular automata with effective error resilience

摘要

In this paper, a comprehensive study has been done on existing Quantum-dot Ceilular Automata (QCA) 5-input majority voters (MV) which explores that all the previous designs provides poor fault tolerance along with high power consumption and weak cell layout architecture. Also, a novel fault tolerant 5-input MV is designed using QCA tile structure. The proposed design exhibits significant improvement over existing MVs in terms of device area (33%). The fault characterization of the 5-input MV under cell omission and extra cell defects are investigated. The outcome proves that the defect tolerance of the proposed MV is 28% in case of single cell omission defect and 100% in case of single extra cell defect. The physical proof affirms stability of the proposed 5-input MV whereas energy analysis confirms the low power consumption of proposed MV. Moreover, the design capability is investigated realizing a 1-bit Adder and an SR latch.