@inproceedings{d1fb63308a674a969d8b918b925f9578,
title = "On error modeling and analysis of approximate adders",
abstract = "Approximate adder design has drawn wide attention as it can achieve good trade-offs between computation accuracy and cost. We observe that all existing approximate adders may produce completely incorrect result with up to 100% relative error. The big errors happen when higher bits have inconsistent views on certain lower carry-ins due to long carry chain. In this paper, we build a theoretical model to efficiently estimate the error characteristics of approximate adders. Furthermore, we present a novel approximate adder design with provable relative error bound by enforcing global carry consistency in long carry chains. Experimental results validate our theoretical model and demonstrate that our design outperforms start-of-The-Art approximate adders.",
author = "Li Li and Hai Zhou",
year = "2015",
month = jan,
day = "5",
doi = "10.1109/ICCAD.2014.7001399",
language = "English (US)",
series = "IEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers, ICCAD",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "January",
pages = "511--518",
booktitle = "2014 IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2014 - Digest of Technical Papers",
address = "United States",
edition = "January",
note = "2014 33rd IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2014 ; Conference date: 02-11-2014 Through 06-11-2014",
}