Energy aware distributed arithmetic DCT architectures

被引：11

作者：

Darwish, T ^{[1
]}

Bayoumi, M ^{[1
]}

机构：

[1] Univ Louisiana, Ctr Adv Comp Studies, Lafayette, LA USA

来源：

SIPS 2003: IEEE WORKSHOP ON SIGNAL PROCESSING SYSTEMS: DESIGN AND IMPLEMENTATION | 2003年

关键词：

D O I：

10.1109/SIPS.2003.1235695

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

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.

引用

页码：351 / 356

页数：6