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Industrial wireless applications typically operate in heterogeneous network environments and require high reliability and strictly guaranteed low latency at moderate data rates. In this contribution we provide an insight into present industrial wireless communication standards and identify the challenges they will have to accomplish in order to achieve business success. We concentrate on the coexistence...
In this paper we evaluate the aggregate information efficiency IEA as a function of the node density for IR-UWB ad-hoc wireless sensor networks in single-hop scenarios by considering retransmission of misdetected packets. The metric of IEA was introduced and evaluated in a semi-analytical scenario.We apply the concept of the aggregate information efficiency to a packet-based network simulator with...
In the context of low data rate, low power IR-UWB radio networks, we propose a strategy for impulsive interference management based on pulse rate adaptation. Sources are always allowed to send at full power and to independently adapt their average pulse repetition frequency in order to control the shared medium utilization and guarantee QoS constraints. Our concept is based on existing findings that...
Game theory is a broadly accepted tool for resource optimization in cognitive radio networks. By modeling a resource management problem as a game, some aspects of a real-world implementation have to be relaxed. For instance, the number of players in a game is conventionally assumed constant but in real networks it changes over time. Furthermore, the available computing power of wireless sensor nodes...
In this paper, we address the benefits of controlling the channel access rate of IR-UWB links as regards to the pulse rate (i.e. pulses/sec), the modulation and the error coding rate. We consider a network-centric design approach and quantify the benefits in terms of cumulative network throughput under two competing topologies: peer-to-peer and star-topology. Results obtained by simulation show that...
This paper introduces a novel MAC strategy, which flexibly configures the error protection level and the average pulse period per link to control the shared medium utilization in an IR-UWB network. This strategy deviates from recent research efforts towards access schemes based on IEEE 802.15.4 MAC and exploits research results of game theory and cognitive radio.
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