{"title":"Performance analysis of 64-bit Carry Lookahead Adders using conventional and hierarchical structure styles","authors":"Abdulmajeed Alghamdi, F. Gebali","doi":"10.1109/PACRIM.2015.7334813","DOIUrl":null,"url":null,"abstract":"This paper introduces performance analysis of 64-bit Carry Lookahead Adders using conventional and hierarchical structure styles. We evaluate conventional carry lookahead adder (CLA) and hierarchical carry lookahead adder (HCLA) using different parameters. Our design is targeted into FPGA Virtex 7 family. Area, delay, and area-delay product of all design choices are reported. In the experimental results, we reduced CLA delay and area using radix-2 which performed better than traditionally used radix-4 CLA. In addition, we showed that CLA using conventional structure has better performance than the hierarchical structure.","PeriodicalId":350052,"journal":{"name":"2015 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PACRIM.2015.7334813","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
This paper introduces performance analysis of 64-bit Carry Lookahead Adders using conventional and hierarchical structure styles. We evaluate conventional carry lookahead adder (CLA) and hierarchical carry lookahead adder (HCLA) using different parameters. Our design is targeted into FPGA Virtex 7 family. Area, delay, and area-delay product of all design choices are reported. In the experimental results, we reduced CLA delay and area using radix-2 which performed better than traditionally used radix-4 CLA. In addition, we showed that CLA using conventional structure has better performance than the hierarchical structure.