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Dynamic voltage scaling and power management for portable systems

, , , , and . DAC '01: Proceedings of the 38th conference on Design automation, page 524--529. New York, NY, USA, ACM, (2001)
DOI: http://doi.acm.org/10.1145/378239.379016

Abstract

Portable systems require long battery lifetime while still delivering high performance. Dynamic voltage scaling (DVS) algorithms reduce energy consumption by changing processor speed and voltage at run-time depending on the needs of the applications running. Dynamic power management (DPM) policies trade off the performance for the power consumption by selectively placing components into low-power states. In this work we extend the DPM model presented in 2, 3 with a DVS algorithm, thus enabling larger power savings. We test our approach on MPEG video and MP3 audio algorithms running on the SmartBadge portable device 1. Our results show savings of a factor of three in energy consumption for combined DVS and DPM approaches.

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Dynamic voltage scaling and power management for portable systems

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