Christian Schwingenschlögl

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Because of its reactive nature, AODV can handle the highly-dynamic behavior of vehicular Ad-Hoc networks relatively efficiently. However, in addition to link status information, a lot of other information is available within cars, e.g. information about speed and location as well as digital maps. The realization of some of the envisioned application(More)
— The IEEE 802.16-2004 standard specifies wireless broad-band networks with optional support for multi-hop mesh operation (mesh mode). The provision and support of high-quality real-time services such as voice over IP is crucial, if wireless networks based on the IEEE 802.16-2004 standard are to challenge wired network services. In this paper we investigate(More)
—Especially for synchronization-critical wireless networks like ultrawideband impulse radio (UWB-IR), data packets are lost not only due to single bit errors in the payload but also to a large degree because of synchronization errors or preamble failures. Current FEC codes only address bit errors inside a packet. Packets that are lost because of errors in(More)
—Ultra wideband impulse radio (IR-UWB) based on the IEEE 802.15.4a PHY standard offers unique features which are exploitable in MAC designs for wireless personal area networks (WPANs) and wireless sensor networks (WSNs) to improve performance and robustness. To achieve this, different strategies of cross-layer optimizations to the IEEE 802.15.4 MAC using(More)