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We present a design and implementation of a radix-4 complex division unit with prescaling of the operands. Specifically, we extend the treatment of the residual bound and errors due to the use of truncated redundant representation. The requirements for prescaling tables are simplified and a detailed specification of the table design is given. All principal components used in the design are described...
Since redundant number systems allow constant time addition, they are often at the heart of modular multipliers designed for public key cryptography (PKC) applications. Indeed, PKC involves large operands (160 to 1024 bits) and several researchers proposed carry-save or borrow-save algorithms. However, these number systems do not take advantage of the dedicated carry logic available in modern field...
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