Most applications for low-power wireless products are in some way power-constrained. This session will cover issues related to power consumption, including systems design, selection of power sources and protocol design. Also important to low-power systems are the trade-offs between component cost, component count and battery life, which will be discussed.

The lab session will take a closer look at how to practically measure power consumption in a polling system and how to perform accurate estimation of battery life time. We will measure the changing power consumption of a wireless mouse and use this as a basis for discussion for estimating the power consumption of a complex system.