NDLI: Energy aware distributed arithmetic DCT architectures

Content Provider	IEEE Xplore Digital Library
Author	Darwish, T. Bayoumi, M.
Copyright Year	2003
Description	Author affiliation: Center for Adv. Comput. Studies, Louisiana Univ., Lafayette, LA, USA (Darwish, T.; Bayoumi, M.)
Abstract	An energy aware DCT (discrete cosine transform) architecture based on the distributed arithmetic concept is proposed. Architectures based on the distributed arithmetic concept are inherently low power as they are multiplication free algorithms. One characteristic of the DCT is that signal energies are concentrated in only a few coefficients (less than 25%) upon transformation, with the rest (or 75%) of the coefficients being insignificant and negligible. One can skip the computation of these terms without seriously affecting the output signal quality. Exploiting this idea, we propose an energy aware DCT architecture which adaptively trades off image quality with power dissipation. Our simulation results show that the new proposed architecture achieves 60% in power savings with a small degradation in signal quality.
Sponsorship	IEEE Signal Processing Soc. IEEE Circuits & Syst. Soc
Starting Page	351
Ending Page	356
File Size	433229
Page Count	6
File Format	PDF
ISBN	0780377958
ISSN	15206130
DOI	10.1109/SIPS.2003.1235695
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-08-27
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Arithmetic Discrete cosine transforms Computer architecture Transform coding Discrete Fourier transforms Video compression Karhunen-Loeve transforms Power dissipation Power system reliability Multimedia systems
Content Type	Text
Resource Type	Article

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