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With the increasing need forWireless Personal Area Network (WPAN) technology to glue together various person-centric devices, the support for mobility and coexistence of these networks becomes crucial. Such support is of paramount importance in healthcare environments, where transmission collisions due to neighboring WPANs lead to degraded performance and loss/delay of transmitted critical data. In...
Wireless personal area network (WPAN) technology will be used for cable replacement in connecting various devices and sensors carried by a person for health monitoring. With the increasing need, every person will eventually have a WPAN and each WPAN is an autonomous entity. When two WPANs come into the radio range of each other, a collision occurs and network performance is affected. To manage the...
CSMA/CA wireless MAC protocol is adopted in many standards. However, its performance at high contention level is less than desirable due to prolonged backoff period and collisions. We propose a novel cooperative MAC based on the Interweave Cognitive framework to combat high contention. In our setup, we incorporate a subset of self-organizing advanced nodes that opportunistically switch to a contention-free...
This paper considers a wireless sensor network with Time-Hopping-Impulse-Radio Ultra Wide Band as the physical layer. The network is structured as a group of interconnected cells that are not synchronized with each other. In such an unsynchronized environment, inter-cell interference is not Gaussian, but generalized Gaussian. For such a non-Gaussian random interference, its impulsiveness is determined...
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