Optical implementation of an efficient modified signed-digit trinary addition

被引：18
|
作者：
Hossain, MM
Ahmed, JU
Awwal, AAS [1 ]
Michel, HE
机构：
[1] Wright State Univ, Dept Comp Sci & Engn, Dayton, OH 45435 USA
[2] Spectra Precis Software, Atlanta, GA USA
[3] Hewlett Packard Corp, Ft Collins, CO USA
来源：
OPTICS AND LASER TECHNOLOGY | 1998年 / 30卷 / 01期
关键词：
optical computing; modified signed digit; multivalued logic;
D O I：
10.1016/S0030-3992(98)00015-2
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Efficient parallel schemes for carry-propagation-free addition of modified signed-digit trinary numbers are presented. The necessary minterms for implementation using an optical programmable logic array area are derived. The proposed schemes require only a truth table of 25 entries compared with an earlier scheme of 625 entries. The proposed schemes are amenable to optical implementation. Experimental results using an optical programmable logic array are demonstrated. The experiments show the problems of noise and crosstalk. This suggests some de bias is necessary to increase the signal-to-noise ratio of the optical circuit. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：49 / 55
页数：7
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