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In delay sensitive applications of wireless sensor network, it is required to monitor the situation continuously with the sensors. The continuous monitoring operation results in more energy consumption of the sensor nodes. If the delay in data processing and it's communication from one node to other is more, then energy requirement may increase. In most of the situations, it is difficult to replace...
In this paper, we evaluate the energy efficiency of IEEE 802.15.6 compliant Wireless Body Area Networks (WBAN) in scheduled accesss mode. We analyze the impact of superframe size, number of uploads per superframe, payload size, acknowledgement policy and the periodicity of allocations on the energy efficiency. Numerical evaluations show that energy efficiency can be improved by (i) increasing the...
In recent time, wireless sensor networks are gaining popularity among research persons. Wireless sensor networks are energy constraint networks because sensor nodes carry limited energy. Energy efficiency is the prime design issue for wireless sensor networks. Clustering algorithms increase performance of network with reduction in energy consumption of nodes. Clustering operation is performed in rounds...
A wireless sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, pressure, etc. and to cooperatively pass their data through the network to a main location. Energy efficiency is the important key for WSN. To lower the energy consumption, the network is divided into several clusters in cluster routing algorithm...
In this paper we analyse the Bit Error Rate(BER) performance and energy efficiency of Luby Transform (LT) codes when the signals are Binary Phase shift Keying (BPSK )modulated with varying thresholds and transmitted over the Free Space Optical (FSO)Channel in a wireless sensor network. We model the FSO channel using the Gamma-Gamma distribution function and compare the performance for varied turbulence...
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