期刊名称：International Journal of VLSI Design & Communication Systems
印刷版ISSN：0976-1527
电子版ISSN：0976-1357
出版年度：2013
卷号：4
期号：5
DOI：10.5121/vlsic.2013.4502
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Nowadays exponential advancement in reversible computation has lead to better fabrication and integration process. It has become very popular over the last few years since reversible logic circuits dramatically reduce energy loss. It consumes less power by recovering bit loss from its unique input-output mapping. This paper presents two new gates called RC-I and RC-II to design an n-bit signed binary comparator where simulation results show that the proposed circuit works correctly and gives significantly better performance than the existing counterparts. An algorithm has been presented in this paper for constructing an optimized reversible n-bit signed comparator circuit. Moreover some lower bounds have been proposed on the quantum cost, the numbers of gates used and the number of garbage outputs generated for designing a low cost reversible signed comparator. The comparative study shows that the proposed design exhibits superior performance considering all the efficiency parameters of reversible logic design which includes number of gates used, quantum cost, garbage output and constant inputs. This proposed design has certainly outperformed all the other existing approaches.
关键词：Reversible Comparator; Quantum Computing; Signed Arithmetic; Low Power
