Wireless sensor networks (WSNs) are a challenging topic and promise to change the concept of "computer" and its role in everyday life. The extreme heterogeneity of WSNs makes both design and reuse of applications difficult. In the development of application software for WSNs a key step in improving interoperability and reuse is adopting a framework for a complete design space exploration. This book addresses various, key challenges related to WSN, by presenting an integrated SystemC-based design flow for WSN-based applications.