title: Digital optical processing based on higher-order modified signed-digit symbolic substitution.
abstract: An efficient higher-order modified signed-digit optical symbolic substitution technique for addition and subtraction has been derived. This two-step symbolic substitution technique, which is independent of the number of bits to be processed, saves a tremendous amount of computation time. Two separate approaches for optical implementation that use content-addressable memory and the joint transform correlator are also suggested.
authors: M S
authors: MS
authors: Alam
authors: A A
authors: AA
authors: Awwal
authors: M A
authors: MA
authors: Karim