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Optical Engineering

One-step digit-set-restricted modified signed-digit adder using an incoherent correlator based on a shared content-addressable memory
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Paper Abstract

An efficient one-step digit-set-restricted modified signed-digit (MSD) adder based on symbolic substitution is presented. In this technique, carry propagation is avoided by introducing reference digits to restrict the intermediate carry and sum digits to {1,0} and {0,1}, respectively. The proposed technique requires significantly fewer minterms and simplifies system complexity compared to the reported one-step MSD addition techniques. An incoherent correlator based on an optoelectronic shared content-addressable memory processor is suggested to perform the addition operation. In this technique, only one set of minterms needs to be stored, independent of the operand length.

Paper Details

Date Published: 1 October 2002
PDF: 6 pages
Opt. Eng. 41(10) doi: 10.1117/1.1505037
Published in: Optical Engineering Volume 41, Issue 10
Show Author Affiliations
Feng Qian, Shanghai Institute of Optics and Fine Mechanics (China)
Guoqiang Li, Shanghai Institute of Optics and Fine Mechanics (United States)
Mohammad S. Alam, Univ. of South Alabama (United States)

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