Koushik Niyogi

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Due to increasing clock speeds and shrinking technologies, distributing a single global clock signal throughout a chip is becoming a difficult and challenging proposition. In this paper, we address the problem of energy optimal local speed and voltage selection in frequency/voltage island based systems under given performance constraints. Our results show(More)
Recent advances in processor, memory and radio technology have enabled cheap nodes capable of sensing, communication and processing. Networks of distributed microsensors are rapidly emerging as a feasible solution to a wide range of data gathering applications. However, the key impediments to successful deployment of microsensor nodes are their energy and(More)
Distributed sensor environments are emerging as a feasible solution to a wide range of data collection applications. However, energy constraints on sensor nodes, which are usually powered by batteries, hinder the successful deployment of such networks. We present an adaptive middleware framework for energy aware information collection in sensor networks(More)
Due to difficulties in distributing a single global clock signal over increasingly large chip areas, a globally asynchronous, locally synchronous design is considered a promising technique in the system on a chip (SoC) era. In the context of today's increasingly complex SoCs, there is a need for design methodologies that start at higher levels of(More)
Nodes in a sensor network are typically severely constrained by the amount of power available to them. Furthermore, power consumption by the wireless radio in a sensor node is an order of magnitude higher than the power consumption of computation on the node. We present two techniques that exploit this characteristic of sensor nodes to reduce the power(More)
Recent advances in processor, memory and radio technology have enabled cheap nodes capable of sensing, communicating and processing. Networks of distributed microsensors are rapidly emerging as a feasible solution to a wide range of data gathering applications. However, the key impediments to successful deployment of microsensor nodes are their energy and(More)
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