Please use this identifier to cite or link to this item: https://doi.org/10.1109/tcsii.2020.2999131
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dc.titleApproximate Multipliers with Dynamic Truncation for Energy Reduction via Graceful Quality Degradation
dc.contributor.authorFrustaci, Fabio
dc.contributor.authorPerri, Stefania
dc.contributor.authorCorsonello, Pasquale
dc.contributor.authorAlioto, Massimo
dc.date.accessioned2020-08-17T07:45:05Z
dc.date.available2020-08-17T07:45:05Z
dc.date.issued2020
dc.identifier.citationFrustaci, Fabio, Perri, Stefania, Corsonello, Pasquale, Alioto, Massimo (2020). Approximate Multipliers with Dynamic Truncation for Energy Reduction via Graceful Quality Degradation. IEEE Transactions on Circuits and Systems II: Express Briefs : 1-5. ScholarBank@NUS Repository. https://doi.org/10.1109/tcsii.2020.2999131
dc.identifier.issn15497747
dc.identifier.issn15583791
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/172936
dc.description.abstractIn approximate operators, dynamic truncation allows trading off energy and quality of computation at runtime. Although it exploits the specificity of the data being processed, its significant energy overhead over simple static truncation fundamentally limits its energy benefits. This brief describes a simple and efficient design methodology that reduces the energy consumption of dynamically truncated multipliers, based on a smart mapping of the partial products. A configurable hardware correction strategy is also proposed to enable graceful quality degradation, as well as more aggressive energy reduction at a given quality. When applied to Wallace multipliers, the proposed approach achieves quality, in terms of Mean Error Distance, up to 11× higher than the conventional dynamic truncation, at the same energy. In the case study of Discrete Cosine Transform compression, the proposed approximate multiplier reaches image qualities by 15-35% better, compared to prior art.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.sourceElements
dc.typeArticle
dc.date.updated2020-08-10T18:59:21Z
dc.contributor.departmentELECTRICAL AND COMPUTER ENGINEERING
dc.description.doi10.1109/tcsii.2020.2999131
dc.description.sourcetitleIEEE Transactions on Circuits and Systems II: Express Briefs
dc.description.page1-5
dc.published.statePublished
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