Digit-set-restricted modified signed-digit arithmetic based on optoelectronic shared content-addressable memory

Feng Qian; Guoqiang Li; Mohammad S Alam; Mohammad A Karim

doi:10.1117/12.505917

12 December 2003 Digit-set-restricted modified signed-digit arithmetic based on optoelectronic shared content-addressable memory

Feng Qian, Guoqiang Li, Mohammad S Alam, Mohammad A Karim

Author Affiliations +

Proceedings Volume 5201, Photonic Devices and Algorithms for Computing V; (2003) https://doi.org/10.1117/12.505917
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

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 {-1,0} 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.

Citation Download Citation

Feng Qian, Guoqiang Li, Mohammad S Alam, and Mohammad A Karim "Digit-set-restricted modified signed-digit arithmetic based on optoelectronic shared content-addressable memory", Proc. SPIE 5201, Photonic Devices and Algorithms for Computing V, (12 December 2003); https://doi.org/10.1117/12.505917

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available