12 April 1988 Adaptive Optical Signal Processing Architecture Using Signed-Digit Number System
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Proceedings Volume 0886, Optoelectronic Signal Processing for Phased-Array Antennas; (1988) https://doi.org/10.1117/12.944195
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States
Abstract
Adaptive signal processing presents extremely demanding requirements to current signal processing hardware. In this paper Signed-Digit arithmetic techniques are evaluated for applicability in adaptive signal processing architectures. It is shown that signed-digit arithmetic offers the advantage of parallelism in computation without the accompanying conversion problems of the residue arithmetic representation. A brief overview of the basic features of signed-digit arithmetic are presented with structures for addition and multiplication. It has been shown that these primitives can be used for matrix operations, including least-square minimization. In optical implementations of residue arithmetic architectures, look-up tables are generally used, which can also be used for a signed-digit implementation.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P A Ramamoorthy, G Govind, "Adaptive Optical Signal Processing Architecture Using Signed-Digit Number System", Proc. SPIE 0886, Optoelectronic Signal Processing for Phased-Array Antennas, (12 April 1988); doi: 10.1117/12.944195; https://doi.org/10.1117/12.944195
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