@inproceedings{1834, author = {{Valentin, Stefan and Lichte, Hermann S. and Warneke, Daniel and Biermann, Thorsten and Funke, Rafael and Karl, Holger}}, booktitle = {{2008 IEEE 68th Vehicular Technology Conference}}, isbn = {{9781424417216}}, publisher = {{IEEE}}, title = {{{Mobile Cooperative WLANs - MAC and Transceiver Design, Prototyping, and Field Measurements}}}, doi = {{10.1109/vetecf.2008.350}}, year = {{2008}}, } @inproceedings{1839, author = {{Valentin, S. and Freitag, T. and Karl, Holger}}, booktitle = {{2008 IEEE International Conference on Communications}}, isbn = {{9781424420759}}, publisher = {{IEEE}}, title = {{{Integrating Multiuser Dynamic OFDMA into IEEE 802.11 WLANs - LLC/MAC Extensions and System Performance}}}, doi = {{10.1109/icc.2008.626}}, year = {{2008}}, } @inbook{1841, author = {{Woldegebreal, Dereje H. and Karl, Holger}}, booktitle = {{Lecture Notes in Computer Science}}, isbn = {{9783540776895}}, pages = {{141--155}}, publisher = {{Springer Berlin Heidelberg}}, title = {{{Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension}}}, doi = {{10.1007/978-3-540-77690-1_9}}, year = {{2008}}, } @inproceedings{822, author = {{H. Woldegebreal, Dereje and Karl, Holger}}, booktitle = {{Wireless Sensor Networks, 5th European Conference, EWSN 2008, Bologna, Italy, January 30-February 1, 2008, Proceedings}}, pages = {{141----155}}, title = {{{Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension}}}, doi = {{10.1007/978-3-540-77690-1_9}}, year = {{2008}}, } @inproceedings{823, author = {{Valentin, Stefan and Freitag, Thomas and Karl, Holger}}, booktitle = {{Proceedings of IEEE International Conference on Communications, ICC 2008, Beijing, China, 19-23 May 2008}}, pages = {{3328----3334}}, title = {{{Integrating Multiuser Dynamic OFDMA into IEEE 802.11 WLANs - LLC/MAC Extensions and System Performance}}}, doi = {{10.1109/ICC.2008.626}}, year = {{2008}}, } @inproceedings{824, author = {{S. Lichte, Hermann and Valentin, Stefan and Karl, Holger and Aad, Imad and Loyola, Luis and Widmer, J{\}}, booktitle = {{INFOCOM 2008. 27th IEEE International Conference on Computer Communications, Joint Conference of the IEEE Computer and Communications Societies, 13-18 April 2008, Phoenix, AZ, {USA}}}, pages = {{1858----1866}}, title = {{{Design and Evaluation of a Routing-Informed Cooperative MAC Protocol for Ad Hoc Networks}}}, doi = {{10.1109/INFOCOM.2008.249}}, year = {{2008}}, } @inproceedings{825, author = {{Valentin, Stefan and S. Lichte, Hermann and Karl, Holger and Aad, Imad and Loyola, Luis and Widmer, J.}}, booktitle = {{Proceedings of the 11th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2008, Vancouver, British Columbia, Canada, October 27-31, 2008}}, pages = {{193----202}}, title = {{{Opportunistic relaying vs. selective cooperation: analyzing the occurrence-conditioned outage capacity}}}, doi = {{10.1145/1454503.1454539}}, year = {{2008}}, } @inproceedings{826, author = {{Valentin, Stefan and Volkhausen, Tobias and Atay Onat, Furuzan and Yanikomeroglu, Halim and Karl, Holger}}, booktitle = {{Proceedings of the IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008, 15-18 September 2008, Cannes, French Riviera, France}}, pages = {{1----6}}, title = {{{Decoding-based channel estimation for selective cooperation diversity protocols}}}, doi = {{10.1109/PIMRC.2008.4699545}}, year = {{2008}}, } @inproceedings{827, author = {{Valentin, Stefan and S. Lichte, Hermann and Warneke, Daniel and Biermann, Thorsten and Funke, Rafael and Karl, Holger}}, booktitle = {{Proceedings of the 68th IEEE Vehicular Technology Conference, VTC Fall 2008, 21-24 September 2008, Calgary, Alberta, Canada}}, pages = {{1----5}}, title = {{{Mobile Cooperative WLANs - MAC and Transceiver Design, Prototyping, and Field Measurements}}}, doi = {{10.1109/VETECF.2008.350}}, year = {{2008}}, } @inproceedings{828, author = {{H. Woldegebreal, Dereje and Valentin, Stefan and Karl, Holger}}, booktitle = {{Proceedings of the 68th IEEE Vehicular Technology Conference, VTC Fall 2008, 21-24 September 2008, Calgary, Alberta, Canada}}, pages = {{1----5}}, title = {{{Incremental Network Coding in Cooperative Transmission Wireless Networks}}}, doi = {{10.1109/VETECF.2008.346}}, year = {{2008}}, } @inproceedings{1003, author = {{Platz, Daniel and Woldegebreal, Dereje H and Karl, Holger}}, booktitle = {{Spread Spectrum Techniques and Applications, 2008 IEEE 10th International Symposium on}}, pages = {{654----660}}, title = {{{Random network coding in wireless sensor networks: Energy efficiency via cross-layer approach}}}, year = {{2008}}, } @inproceedings{1007, author = {{Valentin, Stefan and Volkhausen, Tobias and Onat, Furuzan Atay and Yanikomeroglu, Halim and Karl, Holger}}, booktitle = {{Communications Workshops, 2008. ICC Workshops' 08. IEEE International Conference on}}, pages = {{129----133}}, title = {{{Enabling partial forwarding by decoding-based one and two-stage selective cooperation}}}, year = {{2008}}, } @inproceedings{1840, author = {{Woldegebreal, Dereje H. and Karl, Holger}}, booktitle = {{2007 4th International Symposium on Wireless Communication Systems}}, isbn = {{9781424409785}}, publisher = {{IEEE}}, title = {{{Multiple-Access Relay Channel with Network Coding and Non-Ideal Source-Relay Channels}}}, doi = {{10.1109/iswcs.2007.4392437}}, year = {{2007}}, } @inproceedings{1842, author = {{Karl, Holger}}, publisher = {{Communication in Distributed Systems (KiVS), 2007 ITG-GI Conference}}, title = {{{Optimizing sleeping intervals in preamble sampling MAC for WSNs}}}, year = {{2007}}, } @article{830, author = {{Festag, Andreas and Karl, Holger and Wolisz, Adam}}, journal = {{Wireless Communications and Mobile Computing}}, number = {{3}}, pages = {{319----339}}, title = {{{Investigation of multicast-based mobility support in all-IP cellular networks}}}, doi = {{10.1002/wcm.328}}, year = {{2007}}, } @inproceedings{831, author = {{van der Stok, Peter and Karl, Holger and De Ambroggi, Fabio and Decotignie, JeanDominique and Siegemund, Frank and Lokhorst, Kees and Hellenschmidt, Michael}}, booktitle = {{Constructing Ambient Intelligence - AmI 2007 Workshops Darmstadt, Germany, November 7-10, 2007 Revised Papers}}, pages = {{426----429}}, title = {{{WASP - Wirelessly Accessible Sensor Populations: A Project Overview}}}, doi = {{10.1007/978-3-540-85379-4_49}}, year = {{2007}}, } @inproceedings{832, author = {{H. Woldegebreal, Dereje and Valentin, Stefan and Karl, Holger}}, booktitle = {{Proceedings of the 10th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2007, Chania, Crete Island, Greece, October 22-26, 2007}}, pages = {{36----44}}, title = {{{Outage probability analysis of cooperative transmission protocols without and with network coding: inter-user channels based comparison}}}, doi = {{10.1145/1298126.1298136}}, year = {{2007}}, } @inproceedings{833, author = {{Valentin, Stefan and von Malm, Holger and Karl, Holger}}, booktitle = {{Proceedings of the IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2007, 3-7 September 2007, Athens, Greece}}, pages = {{1----6}}, title = {{{Traffic-Aware Asymmetric Cooperation Diversity for Media Streaming in Wireless Networks}}}, doi = {{10.1109/PIMRC.2007.4394223}}, year = {{2007}}, } @inproceedings{834, author = {{S. Lichte, Hermann and Valentin, Stefan and Eitzen, Falk and Stege, Matthias and Unger, Carsten and Karl, Holger}}, booktitle = {{3rd International ICST Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities, TridentCom 2007, Orlando, Florida, USA, May 21-23 2007}}, pages = {{1----9}}, title = {{{Integrating multiuser dynamic OFDMA into IEEE 802.11a and prototyping it on a real-time software-defined radio testbed}}}, doi = {{10.1109/TRIDENTCOM.2007.4444671}}, year = {{2007}}, } @inproceedings{835, author = {{Valentin, Stefan and Karl, Holger}}, booktitle = {{IEEE Wireless Communications and Networking Conference, WCNC 2007, Hong Kong, China, 11-15 March, 2007}}, pages = {{896----901}}, title = {{{Effect of User Mobility in Coded Cooperative Systems with Joint Partner and Cooperation Level Selection}}}, doi = {{10.1109/WCNC.2007.170}}, year = {{2007}}, } @inproceedings{836, author = {{Marie Feeney, Laura and Cetin, Bilge and Hollos, Daniel and Kubisch, Martin and Mengesha, Seble and Karl, Holger}}, booktitle = {{Wired/Wireless Internet Communications, 5th International Conference, WWIC 2007, Coimbra, Portugal, May 23-25, 2007, Proceedings}}, pages = {{201----212}}, title = {{{Multi-rate Relaying for Performance Improvement in IEEE 802.11 WLANs}}}, doi = {{10.1007/978-3-540-72697-5_17}}, year = {{2007}}, } @inproceedings{1015, author = {{Valentin, Stefan and Karl, Holger}}, booktitle = {{Proc. of the European Wireless Conference (EW)}}, title = {{{Analyzing the effect of asymmetric mobility and channel configurations on the outage performance of coded cooperative systems}}}, year = {{2007}}, } @article{1018, author = {{Valentin, Stefan and Lichte, Hermann S and Karl, Holger and Simoens, Sebastien and Vivier, Guillaume and Vidal, Josep and Agustin, Adrian}}, journal = {{Cognitive Wireless Networks}}, pages = {{155----178}}, title = {{{Implementing cooperative wireless networks}}}, doi = {{10.1007/978-1-4020-5979-7_8}}, year = {{2007}}, } @techreport{2518, author = {{Valentin, Stefan and von Malm, Holger and Karl, Holger}}, title = {{{Evaluating the GNU Software Radio platform for wireless testbeds}}}, year = {{2006}}, } @inproceedings{2523, author = {{Valentin, Stefan and Lichte, Herman S. and Karl, Holger and Vivier, Guillaume and Simoens, Sebastien and Vidal, Josep and Agustin, Adrian and Aad, Imad}}, title = {{{Cooperative wireless networking beyond store-and-forward: Perspectives for PHY and MAC design}}}, year = {{2006}}, } @inproceedings{2526, author = {{Dannewitz, Christian and Berg, Stefan and Karl, Holger}}, booktitle = {{ Proc. of the Wireless World Research Forum Meeting }}, title = {{{An IEEE 802.21-based Universal Information Service }}}, year = {{2006}}, } @proceedings{17417, abstract = {{We present a parallel algorithm for the rendering of complex three-dimensional scenes. The algorithm runs across heterogeneous architectures of PC-clusters consisting of a visualization-node, equipped with a powerful graphics adapter, and cluster nodes requiring weaker graphics capabilities only. The visualization-node renders a mixture of scene objects and simplified meshes (Reliefboards). The cluster nodes assist the visualization-node by asynchronous computing of Reliefboards, which are used to replace and render distant parts of the scene. Our algorithm is capable of gaining significant speedups if the cluster's nodes provide weak graphics adapters only. We trade the number of cluster nodes off the scene objects' image quality.}}, editor = {{Rammig, Franz-Josef and Dangelmaier, Wilhelm and Karl, Holger and Mertsching, Bärbel and Meyer auf der Heide, Friedhelm and Trächtler, Ansgar}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts}}, title = {{{Self-Coordinating Systems: The Next Challenge in Research on Distributed Systems}}}, year = {{2006}}, } @article{837, author = {{Hoene, Christian and Karl, Holger and Wolisz, Adam}}, journal = {{Int. J. Communication Systems}}, number = {{3}}, pages = {{299----316}}, title = {{{A perceptual quality model intended for adaptive VoIP applications}}}, doi = {{10.1002/dac.755}}, year = {{2006}}, } @article{838, author = {{Gross, James and Geerdes, Hans{-}Florian and Karl, Holger and Wolisz, Adam}}, journal = {{IEEE Journal on Selected Areas in Communications}}, number = {{3}}, pages = {{427----436}}, title = {{{Performance analysis of dynamic OFDMA systems with inband signaling}}}, doi = {{10.1109/JSAC.2005.862386}}, year = {{2006}}, } @inproceedings{840, author = {{Mattern, Friedemann and Karl, Holger and Römer, Kay}}, booktitle = {{Third European Workshop, {EWSN} 2006, Zurich, Switzerland, February 13-15, 2006, Proceedings}}, editor = {{R{\"{o}}mer, Kay and Karl, Holger and Mattern, Friedemann}}, isbn = {{3-540-32158-6}}, title = {{{Wireless Sensor Networks}}}, doi = {{10.1007/11669463}}, year = {{2006}}, } @inproceedings{1843, author = {{Aguiar, A. and Wolisz, A. and Lederer, H. and Karl, Holger}}, booktitle = {{Proceedings of the 11th European Wireless Conference 2005}}, title = {{{Channel-Adaptive Schedulers with State-of-the-Art Channel Predictors}}}, year = {{2005}}, } @book{841, author = {{Karl, Holger and Willig, Andreas}}, isbn = {{978-0-470-09510-2}}, title = {{{Protocols and architectures for wireless sensor networks}}}, year = {{2005}}, } @article{842, author = {{Ebert, Jean-Pierre and Hollos, Daniel and Karl, Holger and Löbbers, Marc}}, journal = {{Comput. J.}}, number = {{1}}, pages = {{72----83}}, title = {{{Does Multi-Hop Communication Reduce Electromagnetic Exposure?}}}, doi = {{10.1093/comjnl/bxh062}}, year = {{2005}}, } @article{843, author = {{Savoric, Michael and Karl, Holger and Schläger, Morten and Poschwatta, Tobias and Wolisz, Adam}}, journal = {{Computer Networks}}, number = {{2}}, pages = {{269----294}}, title = {{{Analysis and performance evaluation of the EFCM common congestion controller for TCP connections}}}, doi = {{10.1016/j.comnet.2005.01.012}}, year = {{2005}}, } @article{844, author = {{Gross, James and Valentin, Stefan and Karl, Holger and Wolisz, Adam}}, journal = {{European Transactions on Telecommunications}}, number = {{1}}, pages = {{37----49}}, title = {{{A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system}}}, doi = {{10.1002/ett.1030}}, year = {{2005}}, } @article{845, author = {{Karl, Holger and Lentsch, Thomas and Ritter, Hartmut}}, journal = {{Praxis der Informationsverarbeitung und Kommunikation}}, number = {{2}}, pages = {{66----67}}, title = {{{Drahtlose Sensornetze}}}, doi = {{10.1515/PIKO.2005.66}}, year = {{2005}}, } @article{846, author = {{Willig, Andreas and Karl, Holger}}, journal = {{Praxis der Informationsverarbeitung und Kommunikation}}, number = {{2}}, pages = {{86----92}}, title = {{{Data Transport Reliability in Wireless Sensor Networks. A Survey of Issues and Solutions}}}, doi = {{10.1515/PIKO.2005.86}}, year = {{2005}}, } @inbook{848, author = {{Karl, Holger}}, booktitle = {{The Industrial Information Technology Handbook}}, pages = {{1----16}}, title = {{{Ad Hoc Networks}}}, year = {{2005}}, } @inproceedings{1013, author = {{Valentin, Stefan and Gross, James and Karl, Holger and Wolisz, Adam}}, booktitle = {{10th IFIP International Conference on Personal Wireless Communications/PWC'05, Comar, France, 2005}}, title = {{{Adaptive scheduling for heterogeneous traffic flows in cellular wireless OFDM-FDMA systems}}}, year = {{2005}}, } @article{1378, author = {{Gross, James and Valentin, Stefan and Karl, Holger and Wolisz, Adam}}, issn = {{1124-318X}}, journal = {{European Transactions on Telecommunications}}, number = {{1}}, pages = {{37--49}}, publisher = {{Wiley-Blackwell}}, title = {{{A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system}}}, doi = {{10.1002/ett.1030}}, volume = {{16}}, year = {{2005}}, } @inproceedings{2529, author = {{Köpke, A. and Karl, Holger and Wolisz, A. }}, booktitle = {{GI / ITG Fachgespräche Drahtlose Sensornetzwerke}}, title = {{{Consensus in WSN – Identifying critical protocol mechanisms}}}, year = {{2004}}, } @inproceedings{1911, author = {{Aguiar, Ana and Karl, Holger and Wolisz, Adam}}, booktitle = {{Proceedings of European Wireless 2004, Barcelona / Spain }}, title = {{{Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy}}}, year = {{2004}}, } @article{850, author = {{Gross, James and Klaue, Jirka and Karl, Holger and Wolisz, Adam}}, journal = {{Computer Communications}}, number = {{11}}, pages = {{1044----1055}}, title = {{{Cross-layer optimization of OFDM transmission systems for MPEG-4 video streaming}}}, doi = {{10.1016/j.comcom.2004.01.010}}, year = {{2004}}, } @article{851, author = {{Niebert, Norbert and Schieder, Andreas and Abramowicz, Henrik and Malmgren, G. and Sachs, Joachim and Horn, Uwe and Prehofer, Christian and Karl, Holger}}, journal = {{IEEE Wireless Communications}}, number = {{2}}, pages = {{14----22}}, title = {{{Ambient networks: An architecture for communication networks beyond 3G}}}, doi = {{10.1109/MWC.2004.1295733}}, year = {{2004}}, } @inproceedings{852, author = {{Handziski, Vlado and Köpke, Andreas and Karl, Holger and Frank, Christian and Drytkiewicz, Witold}}, booktitle = {{Wireless Sensor Networks, First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings}}, pages = {{172----187}}, title = {{{Improving the Energy Efficiency of Directed Diffusion Using Passive Clustering}}}, doi = {{10.1007/978-3-540-24606-0_12}}, year = {{2004}}, } @inproceedings{853, author = {{Typpö, Ville and Eisl, Jochen and Höller, Jan and Agüero, Ramon and Karl, Holger}}, booktitle = {{Broadband Satellite Comunication Systems and the Challenges of Mobility - IFIP TC6 Workshops on Broadband Satellite Communication Systems and Challenges of Mobility, World Computer Congress, August 22-27, 2004, Toulouse, France}}, pages = {{145----155}}, title = {{{Research Challenges in Mobility and Moving Networks: An Ambient Networks View}}}, doi = {{10.1007/0-387-24043-8_15}}, year = {{2004}}, } @inproceedings{854, author = {{Frank, Christian and Karl, Holger}}, booktitle = {{Proceedings of the 7th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2004, Venice, Italy, October 4-6, 2004}}, pages = {{105----114}}, title = {{{Consistency challenges of service discovery in mobile ad hoc networks}}}, doi = {{10.1145/1023663.1023684}}, year = {{2004}}, } @inproceedings{855, author = {{Marie Feeney, Laura and Hollos, Daniel and Kubisch, Martin and Mengesha, Seble and Karl, Holger}}, booktitle = {{NETWORKING 2004, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication, Third International IFIP-TC6 Networking Conference, Athens, Greece, May 9-14, 2004, Proceedings}}, pages = {{1312----1317}}, title = {{{A Geometric Derivation of the Probability of Finding a Relay in Multi-rate Networks}}}, doi = {{10.1007/978-3-540-24693-0_112}}, year = {{2004}}, } @inproceedings{856, author = {{Hollos, Daniel and Karl, Holger and Wolisz, Adam}}, booktitle = {{2004 IEEE Wireless Communications and Networking Conference, WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004}}, pages = {{819----824}}, title = {{{Regionalizing global optimization algorithms to improve the operation of large ad hoc networks}}}, doi = {{10.1109/WCNC.2004.1311292}}, year = {{2004}}, } @inproceedings{857, author = {{Raguin, David and Kubisch, Martin and Karl, Holger and Wolisz, Adam}}, booktitle = {{2004 IEEE Wireless Communications and Networking Conference , WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004}}, pages = {{1909----1914}}, title = {{{Queue-driven cut-through medium access in wireless ad hoc networks}}}, doi = {{10.1109/WCNC.2004.1311845}}, year = {{2004}}, } @inbook{858, author = {{Karl, Holger}}, booktitle = {{Location-Based Services}}, pages = {{207----244}}, title = {{{Data Transmission in Mobile Communication Systems}}}, year = {{2004}}, } @proceedings{859, editor = {{Karl, Holger and Willig, Andreas and Wolisz, Adam}}, isbn = {{3-540-20825-9}}, publisher = {{First European Workshop, {EWSN} 2004, Berlin, Germany, January 19-21, 2004, Proceedings}}, title = {{{Wireless Sensor Networks}}}, doi = {{10.1007/b94854}}, year = {{2004}}, } @inproceedings{988, author = {{Niebert, Norbert and Flinck, Hannu and Hancock, Robert and Karl, Holger and Prehofer, Christian}}, booktitle = {{13th IST Mobile and Wireless Communications-Summit 2004}}, title = {{{Ambient Networks--Research for Communication Networks Beyond 3G}}}, year = {{2004}}, } @inproceedings{992, author = {{Gross, James and Paoluzzi, Irene and Karl, Holger and Wolisz, Adam}}, booktitle = {{Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th}}, pages = {{1787----1791}}, title = {{{Throughput study for a dynamic OFDM-FDMA system with inband signaling}}}, year = {{2004}}, } @article{993, author = {{Klimin, Nikolay and Enkelmann, Wilfried and Karl, Holger and Wolisz, Adam}}, journal = {{Proc. of WIT}}, title = {{{A hybrid approach for location-based service discovery in vehicular ad hoc networks}}}, year = {{2004}}, } @inproceedings{997, author = {{Carlson, Emma and Karl, Holger and Wolisz, Adam and Prehofer, Christian}}, booktitle = {{Proc. European Wireless}}, location = {{Barcelona/Spain}}, title = {{{Distributed allocation of time slots for real-time traffic in a wireless multi-hop network}}}, year = {{2004}}, } @article{998, author = {{Mengesha, Seble and Karl, Holger and Wolisz, Adam}}, journal = {{Proc. of MedHocNet 2004}}, title = {{{Capacity increase of multi-hop cellular wlans exploiting data rate adaptation and frequency recycling}}}, year = {{2004}}, } @inproceedings{1002, author = {{Carlson, Emma and Bettstetter, Christian and Karl, Holger and Prehofer, Christian and Wolisz, Adam}}, booktitle = {{Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th}}, pages = {{2994----2998}}, title = {{{Distributed maintenance of resource reservation paths in multihop 802.11 networks}}}, year = {{2004}}, } @inproceedings{1006, author = {{Gross, James and Karl, Holger and Wolisz, Adam}}, booktitle = {{European Wireless 2004}}, title = {{{On the effect of inband signaling and realistic channel knowledge on dynamic OFDM-FDMA systems}}}, year = {{2004}}, } @article{1017, author = {{Kubisch, Martin and Karl, Holger and Wolisz, Adam}}, journal = {{Frequenz}}, number = {{3-4}}, pages = {{92----96}}, title = {{{A MAC protocol for wireless sensor networks with multiple selectable, fixed-orientation antennas}}}, doi = {{/10.1.1.3.3185}}, year = {{2004}}, } @inproceedings{1019, author = {{Gross, James and Karl, Holger and Wolisz, Adam}}, booktitle = {{2nd International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks 2004 (WiOpt 2004)}}, title = {{{Throughput optimization of dynamic OFDM-FDMA systems with inband signaling}}}, year = {{2004}}, } @techreport{2533, author = {{ Handziski, Vlado and Köpke, Andreas and Karl, Holger and Wolisz, Adam}}, title = {{{A common wireless sensor network architecture?}}}, year = {{2003}}, } @inproceedings{2535, author = {{Drytkiewicz, Witold and Sroka, Steffen and Handzisk, Vlado and Köpke, Andreas and Karl, Holger}}, booktitle = {{Proc. of 3rd International OMNeT++ Workshop at Budapest University of Technology and Economics}}, title = {{{A Mobility Frame work for OMNeT++}}}, year = {{2003}}, } @inproceedings{1913, author = {{Fu, X. and Chen, T. and Festag, A. and Karl, Holger and Schäfer, G. and Fan, C.}}, booktitle = {{Proceedings IP Based Cellular Network Conference IPCN, Paris / France, Dezember }}, title = {{{Secure, QoS-Enabled Mobility Support for IP-based Networks}}}, year = {{2003}}, } @inproceedings{1914, author = {{Geerdes, Hans-Florian and Karl, Holger}}, booktitle = {{Proceedings of INOC 2003, Evry/Paris}}, title = {{{The Potential of Relaying in Cellular Networks }}}, year = {{2003}}, } @inproceedings{1917, author = {{Aguiar, Ana and Hoene, Christian and Klaue, Jirka and Karl, Holger and Miesmer, Horst and Wolisz, Adam}}, booktitle = {{Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC'03)}}, title = {{{Channel-aware Schedulers for VoIP and MPEG4 based on Channel Prediction}}}, year = {{2003}}, } @article{860, author = {{Savoric, Michael and Karl, Holger and Wolisz, Adam}}, journal = {{Computer Communications}}, number = {{4}}, pages = {{366----375}}, title = {{{The TCP control block interdependence in fixed networks - new performance results}}}, doi = {{10.1016/S0140-3664(02)00155-X}}, year = {{2003}}, } @article{861, author = {{Zirwas, Wolfgang and Habetha, J. and Karl, Holger}}, journal = {{Praxis der Informationsverarbeitung und Kommunikation}}, number = {{4}}, pages = {{184----189}}, title = {{{Ziel-orientierter Entwurf von Multi-hop Medienzugriffsprotokollen}}}, doi = {{10.1515/PIKO.2003.184}}, year = {{2003}}, } @inproceedings{862, author = {{Aguiar, Ana and Karl, Holger and Wolisz, Adam and Miesmer, Horst}}, booktitle = {{Proceedings of the International Conference on Wireless Networks, ICWN '03, June 23 - 26, 2003, Las Vegas, Nevada, {USA}}}, pages = {{3----9}}, title = {{{A Framework for Evaluating Effects of Channel Prediction Inaccuracy on the Performance of Channel Adaptive Techniques}}}, year = {{2003}}, } @inproceedings{863, author = {{Gross, James and Karl, Holger and H. P. Fitzek, Frank and Wolisz, Adam}}, booktitle = {{Proceedings of the International Conference on Wireless Networks, ICWN '03, June 23 - 26, 2003, Las Vegas, Nevada, {USA}}}, pages = {{249----255}}, title = {{{Comparison of Heuristic and Optimal Subcarrier Assignment Algorithms}}}, year = {{2003}}, } @inproceedings{864, author = {{J. M. Havinga, Paul and Etalle, Sandro and Karl, Holger and Petrioli, Chiara and Zorzi, Michele and Kip, Harry and Lentsch, Thomas}}, booktitle = {{Personal Wireless Communications, IFIP-TC6 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings}}, pages = {{198----201}}, title = {{{EYES} - Energy Efficient Sensor Networks}}}, doi = {{10.1007/978-3-540-39867-7_20}}, year = {{2003}}, } @inproceedings{865, author = {{Kubisch, Martin and Karl, Holger and Wolisz, Adam}}, booktitle = {{Personal Wireless Communications, {IFIP-TC6} 8th International Conference, {PWC} 2003, Venice, Italy, September 23-25, 2003, Proceedings}}, pages = {{841----846}}, title = {{{Are Classes of Nodes with Different Power Amplifiers Good for Wireless Multi-hop Networks?}}}, doi = {{10.1007/978-3-540-39867-7_78}}, year = {{2003}}, } @inproceedings{866, author = {{Köpke, Andreas and Willig, Andreas and Karl, Holger}}, booktitle = {{Proceedings IEEE INFOCOM 2003, The 22nd Annual Joint Conference of the IEEE Computer and Communications Societies, San Franciso, CA, USA, March 30 - April 3, 2003}}, pages = {{513----523}}, title = {{{Chaotic Maps as Parsimonious Bit Error Models of Wireless Channels}}}, doi = {{10.1109/INFCOM.2003.1208702}}, year = {{2003}}, } @inproceedings{867, author = {{Sroka, Steffen and Karl, Holger}}, booktitle = {{Proceedings of the Eighth IEEE Symposium on Computers and Communications (ISCC 2003), 30 June - 3 July 2003, Kiris-Kemer, Turkey}}, pages = {{117----124}}, title = {{{Performance Evaluation of a QoS-Aware Handover Mechanism}}}, doi = {{10.1109/ISCC.2003.1214110}}, year = {{2003}}, } @inproceedings{868, author = {{Kubisch, Martin and Mengesha, Seble and Hollos, Daniel and Karl, Holger and Wolisz, Adam}}, booktitle = {{Kommunikation in Verteilten Systemen KiVS, 13. Fachtagung Kommunikation in Verteilten Systemen. KiVS 2003, 25.-28. Februar 2003, Leipzig, Eine Veranstaltung der Informationstechnischen Gesellschaft (ITG/VDE) unter Beteiligung der Gesellschaft für Informatik (GI) Ausgerichtet von der Universität Leipzig}}, pages = {{195----206}}, title = {{{Applying ad-hoc relaying to improve capacity, energy efficiency, and immission in infrastructure-based WLANs}}}, doi = {{10.1007/978-3-642-55569-5_16}}, year = {{2003}}, } @inproceedings{869, author = {{Festag, Andreas and Karl, Holger and Wolisz, Adam}}, booktitle = {{Kommunikation in Verteilten Systemen (KiVS), 13. Fachtagung Kommunikation in Verteilten Systemen. KiVS 2003, 25.-28. Februar 2003, Leipzig, Eine Veranstaltung der Informationstechnischen Gesellschaft (ITG/VDE) unter Beteiligung der Gesellschaft für Informatik (GI) Ausgerichtet von der Universität Leipzig}}, pages = {{233----244}}, title = {{{Classification and Evaluation of Multicast-Based Mobility Support in All-IP Cellular Networks}}}, doi = {{10.1007/978-3-642-55569-5_19}}, year = {{2003}}, } @inproceedings{870, author = {{Kubisch, Martin and Karl, Holger and Wolisz, Adam and Charlie Zhong, Lizhi and M. Rabaey, Jan}}, booktitle = {{2003 IEEE Wireless Communications and Networking, WCNC 2003, New Orleans, LA, USA, 16-20 March, 2003}}, pages = {{558----563}}, title = {{{Distributed algorithms for transmission power control in wireless sensor networks}}}, doi = {{10.1109/WCNC.2003.1200410}}, year = {{2003}}, } @inproceedings{987, author = {{Drytkiewicz, Witold and Sroka, Steffen and Handziski, Vlado and Köpke, Andreas and Karl, Holger}}, booktitle = {{3rd International OMNeT++ workshop}}, title = {{{A mobility framework for omnet++}}}, year = {{2003}}, } @article{989, author = {{Karl, Holger}}, journal = {{Report of AG Mobikom WG7}}, title = {{{An overview of energy-efficiency techniques for mobile communication systems}}}, year = {{2003}}, } @inproceedings{991, author = {{Gross, James and Klaue, Jirka and Karl, Holger and Wolisz, Adam}}, booktitle = {{Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th}}, pages = {{2481----2485}}, title = {{{Subcarrier allocation for variable bit rate video streams in wireless OFDM systems}}}, year = {{2003}}, } @inproceedings{994, author = {{Karl, Holger and Löbbers, Marc and Nieberg, Tim}}, booktitle = {{Proc. Dutch Technology Foundation ProRISC Workshop on Circuits, Systems and Signal Processing}}, title = {{{A data aggregation framework for wireless sensor networks}}}, year = {{2003}}, } @inproceedings{999, author = {{Klaue, Jirka and Gross, James and Karl, Holger and Wolisz, Adam}}, booktitle = {{3rd Workshop of Applications and Services in Wireless Networks 2003 (ASWN 2003)}}, title = {{{Semantic-aware link layer scheduling of mpeg-4 video streams in wireless systems}}}, year = {{2003}}, } @inproceedings{1008, author = {{Neumann, Axel and Fu, Xiaoming and Karl, Holger}}, booktitle = {{Computer Communications, 2003. CCW 2003. Proceedings. 2003 IEEE 18th Annual Workshop on}}, pages = {{24----29}}, title = {{{Prototype implementation and performance evaluation of a QoS-conditionalized handoff scheme for mobile IPv6 networks}}}, year = {{2003}}, } @inproceedings{1024, author = {{Aguiar, Ana Cristina Costa and Hoene, Christian and Klaue, Jirka and Karl, Holger and Miesmer, Horst and Wolisz, Adam}}, booktitle = {{Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC'03)}}, title = {{{Channel-Aware Schedulers For Voip And Mpeg4 For Wireless Communications}}}, year = {{2003}}, } @techreport{2538, author = {{Karl, Holger and Mengesha, Seble and Hollos, Daniel}}, publisher = {{Business Briefing: Wireless Technology 2002}}, title = {{{Relaying in Wireless Access Networks }}}, year = {{2002}}, } @inproceedings{2541, author = {{Köpke, Andreas and Handziski, Vlado and Karl, Holger}}, booktitle = {{Proc. 7th Wireless World Research Forum (WWRF)}}, title = {{{ Making sensor networks intelligent}}}, year = {{2002}}, } @inproceedings{2544, author = {{Miesmer, Horst and Sanneck, Henning and Aguier, Ana and Karl, Holger}}, booktitle = {{Proc. of 6th Wireless World Forum}}, title = {{{Concepts for a QoS-enabled, TCP/IP-oriented Link Layer in Beyond 3G Networks}}}, year = {{2002}}, } @inproceedings{2548, author = {{Hollos, D. and Karl, Holger}}, booktitle = {{Proc. of 2nd Intl. OMNet Workshop}}, title = {{{A HiperLAN/2 simulation model in OMNeT++}}}, year = {{2002}}, } @inproceedings{1921, author = {{Ngo-Quynh, Thu and Karl, Holger and Wolisz, Adam and Rebensburg, Klaus}}, booktitle = {{Proc. IST Mobile & Wireless Telecommunications Summit 2002.}}, title = {{{New Scheduling Algorithm for Providing Proportional Jitter in Differentiated Service Network }}}, year = {{2002}}, } @inproceedings{871, author = {{Fu, Xiaoming and Karl, Holger and Kappler, Cornelia}}, booktitle = {{NETWORKING 2002, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications, Second International IFIP-TC6 Networking Conference, Pisa, Italy, May 19-24, 2002, Proceedings}}, pages = {{721----730}}, title = {{{QoS-Conditionalized Handoff for Mobile IPv6}}}, doi = {{10.1007/3-540-47906-6_58}}, year = {{2002}}, } @inproceedings{872, author = {{Hollos, Daniel and Karl, Holger}}, booktitle = {{Mobile Ad-Hoc Netzwerke, 1. deutscher Workshop über Mobile Ad-Hoc Netzwerke WMAN 2002, 25.-26. März 2002 in Ulm}}, pages = {{91----107}}, title = {{{A protocol extension to HiperLAN/2 to support single-relay networks}}}, year = {{2002}}, } @inproceedings{990, author = {{Xing, Wei and Karl, Holger and Wolisz, Adam and Müller, Harald}}, booktitle = {{In Proc. 5th Intl. Workshop The Internet Challenge: Technology and Applications}}, pages = {{43}}, title = {{{M-SCTP: Design and prototypical implementation of an end-to-end mobility concept}}}, year = {{2002}}, } @inproceedings{1001, author = {{Quynh, Thu Ngo and Karl, Holger and Wolisz, Adam and Rebensburg, Klaus}}, booktitle = {{Universal Multiservice Networks, 2002. ECUMN 2002. 2nd European Conference on}}, pages = {{116----123}}, title = {{{Using only Proportional Jitter Scheduling at the boundary of a Differentiated Service Network: simple and efficient}}}, year = {{2002}}, } @inproceedings{1009, author = {{Sroka, Steffen and Karl, Holger}}, booktitle = {{2nd International OMNeT++ Workshop, Berlin, Germany}}, title = {{{Using akaroa2 with omnet++}}}, year = {{2002}}, } @article{1014, author = {{Ngo-Quynh, Thu and Karl, Holger and Wolisz, Adam and Rebensburg, Klaus}}, journal = {{Proceedings of IST mobile communication and wireless telecommunications summit, Thessaloniki, Greece}}, title = {{{New scheduling algorithm for providing proportional jitter in differentiated services network}}}, year = {{2002}}, } @inproceedings{1020, author = {{Aguiar, A and Karl, Holger and Wolisz, Adam}}, booktitle = {{Proc. of 1st Intl. Conf. on Mobile and Ubiquitous Multimedia}}, pages = {{21----33}}, title = {{{Effects of prediction inaccuracy on the performance of channelstate-aware link layer schedulers}}}, year = {{2002}}, } @inproceedings{2552, author = {{Karl, Holger}}, booktitle = {{Proc. Wireless World Research Forum Kickoff Meeting (WWRF)}}, title = {{{Relaying in Wireless Access Networks – A Capacity and Energy-Efficiency Perspective }}}, year = {{2001}}, } @inproceedings{2554, author = {{Karl, Holger}}, publisher = {{Eork-in-progress session of mobicom 2001}}, title = {{{Relaying ñ bad for energy, good for capacity?}}}, year = {{2001}}, } @inproceedings{2556, author = {{Karl, Holger and Hentschel, T.}}, booktitle = {{Zukunftsperspektiven der Mobilkommunikation, Symposium Bundesministerium für Bildung und Forschung}}, title = {{{IBMS 2 - Integriertes Bandbreiteneffizientes Mobiles Software-Radio System}}}, year = {{2001}}, } @inproceedings{873, author = {{Mengesha, Seble and Karl, Holger and Wolisz, Adam}}, booktitle = {{GI Jahrestagung (1)}}, pages = {{537----544}}, title = {{{Improving Goodput by Relaying in Transmission-Power-Limited Wireless Systems}}}, year = {{2001}}, }