On high-performance parallel decimal fixed-point multiplier designs
On high-performance parallel decimal fixed-point multiplier designs
复制标题
高性能并行十进制定点乘法器设计
DOI:
10.1016/j.compeleceng.2014.08.013
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发表时间:
2014-10
期刊:
影响因子:
--
通讯作者:
陈添丁
中科院分区:
文献类型:
--
作者:
陈添丁
High-performance, area and power efficient hardware implementation of decimal multiplication is preferred to slow software simulations in various key scientific and financial applications, where errors caused by converting decimal numbers into their approximate binary representations are unacceptable. This paper presents a parallel architecture for fixed-point 8421-BCD-based decimal multiplication. In essence, it applies a hybrid 8421–5421 recoding scheme to generate partial products, and accumulates them with 8421 carry-lookahead adders organized as a tree structure. In addition, we propose a 4221-BCD-based decimal multiplier that is built upon a novel 4221-BCD full adder; operands of this 4221 multiplier are directly represented in the 4221 BCD. The proposed 16 × 16 decimal multipliers are compared with other best-known decimal multiplier designs with a TSMC 90-nm technology, and the evaluation results show that the proposed 8421–5421 multiplier achieves the lowest delay and area, as well as the highest power efficiency, among all the existing hardware-based BCD multipliers.
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DOI:
10.1049/iet-cdt:20060160
发表时间:
2007-07
期刊:
IET Comput. Digit. Tech.
影响因子:
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作者:
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DOI:
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2007-06
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18th IEEE Symposium on Computer Arithmetic (ARITH '07)
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DOI:
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发表时间:
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期刊:
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影响因子:
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DOI:
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2000
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