Optical Hartley-transform-based adaptive filter

Mustafa A. G. Abushagur; Robert J. Berinato

doi:10.1117/12.49744

1 November 1991 Optical Hartley-transform-based adaptive filter

Mustafa A. G. Abushagur, Robert J. Berinato

Proceedings Volume 1564, Optical Information Processing Systems and Architectures III; (1991) https://doi.org/10.1117/12.49744
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

A novel optical architecture is presented that is based on the Hartley transform implementation of the classical adaptive least mean square (LMS) algorithm. The Hartley transform is employed to transform the time-domain signal of interest into the frequency domain, where filtering is performed via multiplication by the adaptively controlled filter transfer function. The inverse Hartley transform is then applied to this product resulting in the desired signal estimate, which is then subtracted from the desired signal to obtain the error to be used to update the filter transfer function. In addition to the presentation of this algorithm and the optical implementation, performance assessments based on the number of calculations required for the digital and optical approaches are provided.

Citation Download Citation

Mustafa A. G. Abushagur and Robert J. Berinato "Optical Hartley-transform-based adaptive filter", Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); https://doi.org/10.1117/12.49744

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