Energy-Efficient Design of Battery-Powered Embedded Systems

Energy-ecient design of battery-powered embedded sys tems demands optimizations in both hardware and software In this work we leverage cycleaccurate energy consumption models to explore compiler and source code optimizations aimed at reducing energy consumption In addition we extend cycleaccurate architectural power simulation with battery models that provide battery lifetime estmates The enhanced simulator and software optimizations are used to study and optimize the power dissipation of Smart Badge a wearable system based on the ARM microproces sor developed by HP Laboratories We found that standart compiler optimizations give less than energy savings Source code optimizations are capable of up to energy savings In addition our analysis of battery lifetime for th