Andreas Becher, Jorge Echavarria, Daniel Ziener, S. Wildermann, J. Teich
{"title":"A LUT-Based Approximate Adder","authors":"Andreas Becher, Jorge Echavarria, Daniel Ziener, S. Wildermann, J. Teich","doi":"10.1109/FCCM.2016.16","DOIUrl":null,"url":null,"abstract":"In this paper, we propose a novel approximate adder structure for LUT-based FPGA technology. Compared with a full featured accurate carry-ripple adder, the longest path is significantly shortened which enables the clocking with an increased clock frequency. By using the proposed adder structure, the throughput of an FPGA-based implementation can be significantly increased. On the other hand, the resulting average error can be reduced compared to similar approaches for ASIC implementations.","PeriodicalId":113498,"journal":{"name":"2016 IEEE 24th Annual International Symposium on Field-Programmable Custom Computing Machines (FCCM)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE 24th Annual International Symposium on Field-Programmable Custom Computing Machines (FCCM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FCCM.2016.16","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 13
Abstract
In this paper, we propose a novel approximate adder structure for LUT-based FPGA technology. Compared with a full featured accurate carry-ripple adder, the longest path is significantly shortened which enables the clocking with an increased clock frequency. By using the proposed adder structure, the throughput of an FPGA-based implementation can be significantly increased. On the other hand, the resulting average error can be reduced compared to similar approaches for ASIC implementations.