Residue arithmetic circuits using a signed-digit number representation
Residue arithmetic circuits using a signed-digit number representation
复制标题
使用带符号数字表示的余数运算电路
DOI:
10.1109/iscas.2000.857016
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
K. Shimizu
中科院分区:
文献类型:
--
作者:
Shugang Wei;K. Shimizu
A new concept on residue arithmetic using a radix-2 signed-digit (SD) number representation is presented, by which memoryless residue arithmetic circuits using SD adders can be implemented. For a given modulus m, 2/sup p/-1/spl les/m/spl les/2/sup p/+2/sup p-1/-1, in a residue number system (RNS), the modulo m addition is performed by using two p-digit SD adders. Thus, the module m addition time is independent of the word length of operands. When m=2/sup p/ or m=2/sup p//spl plusmn/1, especially, the module m addition is implemented by only using one SD adder. Moreover, a module m multiplier can be constructed using a binary modulo m SD adder tree, so that the modulo m multiplication can be performed in a time proportional to log/sub 2/p.