PDF(Pubmed)
Abstract：
Extensive research is now being conducted on the design and construction of logic circuits utilizing quantum-dot cellular automata (QCA) technology. This area of study is of great interest due to the inherent advantages it offers, such as its compact size, high speed, low power dissipation, and enhanced switching frequency in the nanoscale domain. This work presents a design of a highly efficient RAM cell in QCA, utilizing a combination of a 3-input and 5-input Majority Voter (MV) gate, together with a 2 × 1 Multiplexer (MUX). The proposed design is also investigated for various faults such as single cell deletion, single cell addition and single cell displacement or misalignment defects. The circuit under consideration has a high degree of fault tolerance. The functionality of the suggested design is showcased and verified through the utilization of the QCADesigner tool. Based on the observed performance correlation, it is evident that the proposed design demonstrates effectiveness in terms of cell count, area, and latency. Furthermore, it achieves a notable improvement of up to 76.72% compared to the present configuration in terms of quantum cost. The analysis of energy dissipation, conducted using the QCAPro tool, is also shown for various scenarios. It is seen that this design exhibits the lowest energy dispersion, hence enabling the development of ultra-low power designs for diverse microprocessors and microcontrollers.
摘要：
目前正在对利用量子点细胞自动机（QCA）技术的逻辑电路的设计和构造进行广泛的研究。由于它提供的固有优势，这个研究领域非常感兴趣，比如它紧凑的尺寸，高速,低功耗，并增强了纳米级域中的开关频率。这项工作提出了QCA中高效RAM单元的设计，利用3输入和5输入多数选民(MV)门的组合，与2×1多路复用器（MUX）。还针对各种故障（如单细胞缺失）研究了拟议的设计，单细胞添加和单细胞置换或错位缺陷。所考虑的电路具有高度的容错能力。通过使用QCADesigner工具来展示和验证建议设计的功能。根据观察到的性能相关性，显然，所提出的设计在细胞计数方面证明了有效性，area,和延迟。此外，在量子成本方面，与目前的配置相比，它实现了高达76.72％的显着改进。能量耗散分析，使用QCAPro工具进行，还显示了各种场景。可以看出，这种设计表现出最低的能量分散，因此，可以为各种微处理器和微控制器开发超低功耗设计。
