ABSTRACT
Contents 7.1 Introduction .............................................................................................154 7.2 Wireless Sensor Node and Network ......................................................... 155 7.3 Energy Models ......................................................................................... 157
7.3.1 Radio Energy Model .....................................................................158 7.3.1.1 Transceiver Circuit Energy .............................................158 7.3.1.2 Transmit Signal Energy .................................................. 159
7.3.2 Processor Energy Estimation ........................................................160 7.4 Component-Level Energy Optimization Techniques................................162 7.5 System-Level Energy Optimization Techniques .......................................163
