Wireless Sensor Networks

7

Hardware Architecture for GPS/INS-Enabled Wireless Sensor Networks

7.1    Introduction

Hardware implementation of cognitive wireless sensor networks (WSNs) is still at an early development stage, and very few works have addressed this issue. In [24] and [25], the authors have implemented two cognitive architectures where cognitive nodes play an important role. The first architecture involves a single cognitive node equipped with high computational and power capabilities. Its role is to collect environment, user, and network information and make power management and scheduling decisions. The second architecture involves one cognitive node per cluster or per group of clusters. Field test results show significant lifetime improvements compared ...