Quotient-selected modified signed-digit division algorithm and its optoelectronic implementations

Feng Qian; Guoqiang Li; Mohammad S. Alam

doi:10.1117/12.408549

29 November 2000 Quotient-selected modified signed-digit division algorithm and its optoelectronic implementations

Feng Qian, Guoqiang Li, Mohammad S. Alam

Proceedings Volume 4114, Photonic Devices and Algorithms for Computing II; (2000) https://doi.org/10.1117/12.408549
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

A novel optoelectronic quotient-selected modified signed- digit division technique is proposed. The division method generates one quotient digit per iteration involving only one shift operation, one quotient selection operation and one addition/subtraction operation. The quotient digit can be selected by observing three most significant digits of the partial remainder independent of the divisor. Two algorithms based on truth-table look-up and binary logic operations have been derived. For optoelectronic implementation, an efficient shared content-addressable memory based architecture as well as compact logic array processor based architecture with an electron-trapping device is proposed. Performance evaluation of the proposed optoelectronic quotient-selected division shows that it is faster than the previously reported convergence division approach. Finally, proof-of-principle experimental results are presented to verify the effectiveness of the proposed technique.

Citation Download Citation

Feng Qian, Guoqiang Li, and Mohammad S. Alam "Quotient-selected modified signed-digit division algorithm and its optoelectronic implementations", Proc. SPIE 4114, Photonic Devices and Algorithms for Computing II, (29 November 2000); https://doi.org/10.1117/12.408549

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