Digit-set-restricted modified signed-digit arithmetic based on optoelectronic shared content-addressable memory
Conference
Qian, F, Li, G, Alam, MS et al. (2003). Digit-set-restricted modified signed-digit arithmetic based on optoelectronic shared content-addressable memory
. Proceedings of SPIE - The International Society for Optical Engineering, 5201 167-173. 10.1117/12.505917
Qian, F, Li, G, Alam, MS et al. (2003). Digit-set-restricted modified signed-digit arithmetic based on optoelectronic shared content-addressable memory
. Proceedings of SPIE - The International Society for Optical Engineering, 5201 167-173. 10.1117/12.505917
For efficient optoelectronic implementation of parallel algorithms, a novel two-step digit-set-restricted modified signed-digit (MSD) arithmetic based on content-addressable-memory is presented. With the introduction of the reference digits, carry propagation is avoided by restricting digit sets of the intermediate carry and sum into {1̄,0} and {0,1}, respectively. In our new algorithm, without using the complement property for the nonzero outputs, only 12 minterms for all the outputs are required. More significantly, since no complement operation is involved, the optical system needs no additional reflecting unit and mask. An incoherent correlator based optoelectronic shared-content-addressable-memory processor is used to perform the arithmetic operations. A proof-of-the-principle experiment is demonstrated.
