George N. Bravos

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Low-cost and low-power sensor nodes forming Wireless Sensor Networks have become suitable for a wide range of applications during recent years. These networks demand the implementation of energy-aware techniques and low complexity protocols in all layers. Recently, a MIMO - based structure has been proposed to offer enhanced energy savings in WSNs, compared(More)
Wireless sensor networks (WSN) belong to a special category of networks where the nodes are size-limited and operate on small batteries that in most cases cannot be replaced. As a result ensuring the viability of these networks is usually a much more important task than achieving greater performance in terms of quality of services (QoS), capacity (C) or(More)
Wireless sensor networks (WSNs) demand the implementation of energy-aware techniques and low-complexity protocols in all layers. Recently, a MIMO-based structure has been proposed to offer enhanced energy savings in WSNs. In this paper, we examine and compare MIMO-based WSN with a multihop transmission in terms of energy efficiency. The results depend on(More)
Low-cost and low-power sensor nodes forming Wireless Sensor Networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO-based structure has been proposed to offer enhanced energy(More)
Low-cost and low-power sensor nodes forming Wireless Sensor Networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO – based structure has been proposed to offer enhanced(More)
Wireless sensor networks (WSNs) demand the implementation of energy-aware techniques and lowcomplexity protocols in all layers. In this paper we propose, implement and evaluate a new protocol that combines energy-efficient routing with end-to-end delay minimisation, and embodies a basic power control scheme. We call this scheme energy-delay minimisation(More)
Wireless sensor network becomes an attractive choice for different applications because of their multitasking nature such as sensing the data, computing the data, and transmitting that data to the main location. But wireless sensor network have a number of tiny sensor nodes which are operate on small batteries. So it is very necessary to minimize energy(More)
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