Efficient two-step digit-set-restricted modified signed-digit algorithm based on optoelectronic shared content-addressable memory

Feng Qian; Guoqiang Li; Mohammad A. Karim

doi:10.1117/1.2148920

1 December 2005 Efficient two-step digit-set-restricted modified signed-digit algorithm based on optoelectronic shared content-addressable memory

Feng Qian, Guoqiang Li, Mohammad A. Karim

Author Affiliations +

Optical Engineering, Vol. 44, Issue 12, 125201 (December 2005). https://doi.org/10.1117/1.2148920

Abstract

A two-step digit-set-restricted modified signed-digit (MSD) adder based on symbolic substitution is presented. In the proposed addition algorithm, carry propagation is avoided by using reference digits to restrict the intermediate MSD carry and sum digits into {1‾,0} and {0,1}, respectively. The algorithm requires only 12 minterms to generate the final results, and no complementarity operations for nonzero outputs are involved, which simplifies the system complexity significantly. An optoelectronic shared content-addressable memory based on an incoherent correlator is used for experimental demonstration.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Feng Qian, Guoqiang Li, and Mohammad A. Karim "Efficient two-step digit-set-restricted modified signed-digit algorithm based on optoelectronic shared content-addressable memory," Optical Engineering 44(12), 125201 (1 December 2005). https://doi.org/10.1117/1.2148920

Published: 1 December 2005

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