A wireless embedded sensor architecture for system-level optimization

Emerging low power, embedded, wireless sensor devices are useful for wide range of applications, yet have very limited processing, storage, and especially energy resources. Thus, a key design challenge is to support application-specific optimizations in a highly flexible manner. Power consumption and capabilities of the radio communication layer are the dominant factors in overall system performance. This paper presents a wireless sensor node architecture to achieve high communication bandwidth with the flexibility to efficiently implement novel communication protocols. The architecture is instantiated in an operational design using commercial microcontroller and radio technology. Its ability to optimize system performance by using unconventional protocols is demonstrated by four case studies involving power management, synchronization, localization, and wake-up.

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