@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}}, } @techreport{2515, author = {{Eitzen, Falk and Valentin, Stefan and Gossens, Kai and Karl, Holger and Rolfes, Oliver}}, title = {{{Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication}}}, year = {{2007}}, } @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}}, } @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}}, } @article{839, author = {{Carlson, E. and Prehofer, Christian and Bettstetter, Christian and Karl, Holger and Wolisz, Adam}}, journal = {{IEEE Journal on Selected Areas in Communications}}, number = {{11}}, pages = {{2018----2027}}, title = {{{A Distributed End-to-End Reservation Protocol for IEEE 802.11-Based Wireless Mesh Networks}}}, doi = {{10.1109/JSAC.2006.881633}}, 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}}, } @inproceedings{847, author = {{Kopke, Andreas and Karl, Holger and Lobbers, Marc}}, booktitle = {{Wireless Sensor Networks, Second European Workshop, EWSN 2005, Istanbul, Turkey, January 31 - February 2, 2005, Proceedings}}, pages = {{226----235}}, title = {{{Using energy where it counts: protecting important messages in the link layer}}}, doi = {{10.1109/EWSN.2005.1462015}}, 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}}, }