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Advancement of medical science brings together new trend of proactive health care which gives rise to the era of Wireless Body Area Networks (WBAN). A number of issues including energy efficiency, reliability, optimal use of network bandwidth need to be considered for designing any multi-hop communication protocol for WBANs. Energy consumption depends on many factors like amount and frequency of forwarding...
A Wireless Sensor Network (WSN) is a set of self-powered sensor nodes. These nodes are deployed in infrastructure less mode to collect the useful information from the environment and transmit it to the sink node. The significance of Wireless Sensor Networks has been evidenced in many applications like military areas, health monitoring and observation of earthquake etc. However, WSN has also some limitations...
In this paper, we have focused on orthogonal non-regenerating cooperation for networks with a source-destination pair and a number of relay nodes. We proposed two power allocation problems based on the instantaneous and average information about the channel gains to maximize either the instantaneous or average signal-to-noise ratio at the destination. We also assumed that the network total energy...
This paper deals with a wireless relay system consisting of one source node, a number of relay nodes and one destination node. The relay nodes amplify and then encode their received signals using a distributed space-time code. Under a non-restrictive asymptotic assumption, we prove some upper bounds on the pairwise error probability for different transmission scenarios. These bounds suggest that significant...
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