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Efficient realization of BCD multipliers using FPGAs

Shuli Gao, Dhamin Al-Khalili, J. M. Pierre Langlois and Noureddine Chabini

Article (2017)

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Abstract

In this paper, a novel BCD multiplier approach is proposed. The main highlight of the proposed architecture is the generation of the partial products and parallel binary operations based on 2-digit columns. 1 × 1-digit multipliers used for the partial product generation are implemented directly by 4-bit binary multipliers without any code conversion. The binary results of the 1 × 1-digit multiplications are organized according to their two-digit positions to generate the 2-digit column-based partial products. A binary-decimal compressor structure is developed and used for partial product reduction. These reduced partial products are added in optimized 6-LUT BCD adders. The parallel binary operations and the improved BCD addition result in improved performance and reduced resource usage. The proposed approach was implemented on Xilinx Virtex-5 and Virtex-6 FPGAs with emphasis on the critical path delay reduction. Pipelined BCD multipliers were implemented for 4 × 4, 8 × 8, and 16 × 16-digit multipliers. Our realizations achieve an increase in speed by up to 22% and a reduction of LUT count by up to 14% over previously reported results.

Subjects: 2700 Information technology > 2700 Information technology
Department: Department of Computer Engineering and Software Engineering
PolyPublie URL: https://publications.polymtl.ca/4877/
Journal Title: International Journal of Reconfigurable Computing (vol. 2017)
Publisher: Hindawi
DOI: 10.1155/2017/2410408
Official URL: https://doi.org/10.1155/2017/2410408
Date Deposited: 25 Mar 2022 13:25
Last Modified: 09 Apr 2024 01:08
Cite in APA 7: Gao, S., Al-Khalili, D., Langlois, J. M. P., & Chabini, N. (2017). Efficient realization of BCD multipliers using FPGAs. International Journal of Reconfigurable Computing, 2017, 1-12. https://doi.org/10.1155/2017/2410408

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