H. Luediger's research while affiliated with IMST GMBH and other places

Publications (11)

Article
This paper describes a monolithic integrated transceiver chipset intended for impulse radio (IR) Ultra-wide band (UWB) applications including indoor communication and indoor localization. The chipset operates in the higher UWB band centered at 7.68 GHz and it is optimized for a pulse bandwidth of about 1.5 GHz. The average pulse repetition rate of...
Article
In February 2002 the Federal Communications Commission (FCC) of the United States of America released a First Report and Order permitting the unlicensed operation of UWB devices in the frequency range between 3.1 GHz and 10.6 GHz on a non-interference - non-protected basis. In Europe UWB met a wide public interest and harmonization of UWB regulatio...
Conference Paper
Over decades and under varying names the study of biology-inspired algorithms applied to non-living systems has been the subject of a small and somewhat exotic research community. Only the recent coincidence of a growing inability to master the design, development and operation of increasingly intertwined systems and processes, and an accelerated t...
Article
Over decades and under varying names the study of complex, e.g. biology-inspired algorithms concerned with self-organization has been the subject of a small and somewhat exotic research community. Only the recent coincidence of a growing inability to master the design, development and operation of increasingly complex system and processes, and an a...
Conference Paper
Until UWB became a widely spread subject of research, wireless telecommunications applications were driven by the need to make highly efficient use of spectrum resources, that existed only in scarce quantities. In order to avoid "chaos" in the few allocated frequency bands, standards relying much on the central management of the available resource...
Conference Paper
We consider the case of a virtual data network comprised of a set of end-to-end virtual leased lines. Our work aims at tackling the aspect of appropriate dynamic dimensioning of end-to-end paths subject to minimizing the consumed resources under the constraint of providing deterministic QoS guarantees. In particular, we propose a novel application...
Article
In the framework of the European research project WHYLESS.COM recent FCC regulation on UWB is evaluated as regards power levels and achievable receiver SNR's.. The frequency band from 3.1-10.6 GHz has been evaluated based on impulse responses which were measured at IMST premises in a typical office building. Emphasis is put on the impact of strong...
Conference Paper
Full-text available
The initial results of the development of an ultra-wideband (UWB) radio channel model based on an UWB radio channel measurement campaign carried out at IMST premises are summarised. The derived amplitude statistical model applies for pass band UWB signals under NLOS conditions. From stepped frequency transfer function measurements in the range from...
Article
The Internet and developments in the mobile domain have fueled the first stage of what appears to be a paradigm shift of societal dimensions. Access technologies and standards are created almost daily, each taking a very specific view of user needs while generally disregarding the rest of the world. Radio spectrum may become, in a relatively short...
Article
An open mobile radio access network is described, which differs considerably from current networks in structure, function and in the way it is operated. A flexible radio transmission prin ciple, novel in telecommunica tions, and brokerage of spectrum and wired resources lead to network architectures and characteristics which permit simple access fo...
Article
Full-text available
In any power-shared multi-user system it is of high importance to understand and control the mechanisms of mutual interference of system users. Due to the expected high density of autonomous UWB devices in future home, office and hot spot scenarios, the local capacity of the 'UWB resource pool' needs to be assessed in order to enable the developmen...

Citations

... The location is the intersection of circles with radius equal to the distance between the target and reference nodes and calculated as the one-way propagation time between them [87][88][89]. ...
... Main advantages of UWB systems are the potential for very high data rates at low power operation and the possibility for real time subdecimeter positioning [4], [5]. Recent developments shift the technology from military to civilian applications [6], [7], [8]. Regulation bodies in the US and Europe are on the way to release rules for UWB systems operation [9], [10], [11]. ...
... By using the triangular subcarrier, the bandwidth flatness and steep spectral roll off are guaranteed. By controlling magnitude of sub-carrier the bandwidth can also be controlled easily to fit into the Federal Communications Commission (FCC) spectral mask rule [9]. There are several RF bands that can be used in UWB-FM system that can be utilized [3]. ...
... The concept of CPS-based warehouses, which includes autonomous transport, means moving different materials from one location to another and receiving data from separate parts of the supply chain to realize deliveries in the system of a just-in-time and just-in-sequence. Each asset is fully identifiable via its Digital Twin counterpart, so the amount and quality of the resources are updated automatically [38,39]. There are many automation systems with subsystems in the industry at once which depend mainly on the scale of the company, but traceability has always been a key element of a product or asset. ...
... To avoid intereference, a number of frequency masks and power restrictions have been agreed internationally. Current regulations are summarized in FCC (2002); Luediger & Kallenborn (2009). ...
... On the other hand, the extremely wide bandwidth of UWB makes the time resolution at the receiver much narrower than conventional narrowband systems. This means that only a few multipaths combine together in a given time bin [21]. Therefore, the use of central limit theorem cannot be justified and the assumption that the received signal will have a complex Gaussian distribution does not hold true. ...
... In this fashion, vertical integration of new wireless access technologies can be IP-embedded successfully beyond the boundaries of a typical 3G core network (CN) [9], under the horizontal integration of the application domain. This can provide the safeguards for a practical open mobile system now, without dismissing existing wireless access technologies in favour of a truly open, universal wireless access standard [10], which is bound to lead to yet another lengthy as well as costly infrastructural network evolution exemplar. The benefits from all-IP based RAN architecture become instantly apparent: realistic potentials for a service-rich mobile domain; through IP the service creation cycle across the wireless technology spectrum, is shortened significantly, thus, cultivating economies of scale in introduction of new services. ...