Low-Cost Approximate Multiplier Design using Probability-Driven Inexact Compressors

Yi Guo, Heming Sun, Li Guo, Shinji Kimura

研究成果: Conference contribution

4 引用 (Scopus)

抜粋

Approximate computing is applicable to improve hardware performance by sacrificing some accuracy for error-Tolerant applications, where multiplication is a key arithmetic operation. In this paper, we propose a low-cost approximate multiplier design by employing new probability-driven inexact 4:2, 6:2, 8:2 compressors and inexact half-Adders. This compressor design is explored to reduce the height of partial product matrix into two rows. Different levels of accuracy can be achieved through a grouped error recovery scheme that employs different numbers of error compensation vectors for error reduction. The mean relative error distance (MRED) of the proposed multiplier design is from 1.07% to 7.86%. Compared with the Wallace multiplier using SMIC 40nm process, the most accurate variant of the proposed design reduces power by 50.52%, area by 52.46%, and delay by 33.90%. The proposed multiplier design has a better accuracy-performance trade-off than other designs. Moreover, the efficiency of approximate multipliers is assessed in an image processing application.

元の言語English
ホスト出版物のタイトル2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018
出版者Institute of Electrical and Electronics Engineers Inc.
ページ291-294
ページ数4
ISBN(電子版)9781538682401
DOI
出版物ステータスPublished - 2019 1 8
イベント14th IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018 - Chengdu, China
継続期間: 2018 10 262018 10 30

出版物シリーズ

名前2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018

Conference

Conference14th IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018
China
Chengdu
期間18/10/2618/10/30

ASJC Scopus subject areas

  • Biomedical Engineering
  • Electrical and Electronic Engineering
  • Instrumentation

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  • これを引用

    Guo, Y., Sun, H., Guo, L., & Kimura, S. (2019). Low-Cost Approximate Multiplier Design using Probability-Driven Inexact Compressors. : 2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018 (pp. 291-294). [8605570] (2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APCCAS.2018.8605570