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

Feng Qian; Guoqiang Li; Mohammad S. Alam

doi:10.1117/1.1505037

1 October 2002 One-step digit-set-restricted modified signed-digit adder using an incoherent correlator based on a shared content-addressable memory

Feng Qian, Guoqiang Li, Mohammad S. Alam

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Optical Engineering, Vol. 41, Issue 10, (October 2002). https://doi.org/10.1117/1.1505037

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.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Feng Qian, Guoqiang Li, and Mohammad S. Alam "One-step digit-set-restricted modified signed-digit adder using an incoherent correlator based on a shared content-addressable memory," Optical Engineering 41(10), (1 October 2002). https://doi.org/10.1117/1.1505037

Published: 1 October 2002

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