Title :
Fast Parallel-Prefix Architectures for Modulo 2n-1 Addition with a Single Representation of Zero
Author :
Patel, Rakesh A. ; Benaissa, M. ; Boussakta, Said
Author_Institution :
Univ. of Sheffield, Sheffield
Abstract :
Novel modulo 2n-1 addition algorithms for residue number system (RNS) applications are presented. The proposed algorithms depart from the traditional approach of modulo 2n-1 addition by setting the input carry in the first stage of the addition to one, which only ever produces one representation of zero. The resulting architectures not only offer significant speedup in a modulo 2n-1 addition, but they can also offer a reduction in area and thus provide improvements in the cost functions area times delay2 and energy times delay. The superiority of these architectures is validated through back-annotated VLSI designs using 130 nm CMOS technology.
Keywords :
adders; parallel architectures; residue number systems; CMOS technology; VLSI design; addition algorithm; parallel-prefix architecture; residue number system; single representation; Adders; Chromium; Complexity theory; Computer architecture; Delay; Logic gates; Periodic structures; Modulo 2n-1 adders; One´s complement adders; VLSI design; computer arithmetic; parallel-prefix adders;
Journal_Title :
Computers, IEEE Transactions on
DOI :
10.1109/TC.2007.70750
