An important issue in the development of mobile embedded systems is the optimization of energy consumption. The increasing complexity of these systems leads to an increased power consumption. Unfortunately, the battery capacity grows at a smaller rate than the power requirements from the applications, leaving a gap that must be filled by various system-level optimizations. Dynamic voltage scaling and adaptive body-biasing are well-known techniques to reduce dynamic and leakage energy effectively. These voltage settings can be calculated either offline, before the actual execution of tasks or...