Remote power control of wireless network interfaces
Journal of Embedded Computing - Low-power Embedded Systems
Accurate on-line prediction of processor and memoryenergy usage under voltage scaling
EMSOFT '07 Proceedings of the 7th ACM & IEEE international conference on Embedded software
Power control of wireless network interfaces
ELECTROSCIENCE'08 Proceedings of the 6th WSEAS International Conference on Applied Electromagnetics, Wireless and Optical
Control of multimedia wireless communication network
WSEAS TRANSACTIONS on COMMUNICATIONS
Embedded Systems Design
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In this paper, we describe a software-controlled approach for adaptively minimizing energy in embedded systems for real-time multimedia processing. Energy is optimized by clock speed setting: the software controller dynamically adjusts processor clock speed to the frame rate (FR) requirements of the incoming multimedia stream. The speed-setting policy is based on a system model that correlates clock speed with best case, average case, and worst case sustainable FRs, accounting for data dependency in multimedia streams. The technique has been implemented in a energy-efficient MPEG3 real-time decoder algorithm designed for wearable devices as a case study. The target system is the Hewlett-Packard SmartBadgeIII prototype system based on the StrongARM1100 processor. Hardware measurements show that computational energy can be drastically reduced (up to 40%) with respect to fixed-frequency operation