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363 Publications
2008 | Conference Paper | LibreCat-ID: 822
H. Woldegebreal, Dereje, and Holger Karl. “Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension.” In Wireless Sensor Networks, 5th European Conference, EWSN 2008, Bologna, Italy, January 30-February 1, 2008, Proceedings, 141--155, 2008. https://doi.org/10.1007/978-3-540-77690-1_9.
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2008 | Conference Paper | LibreCat-ID: 823
Valentin, Stefan, Thomas Freitag, and Holger Karl. “Integrating Multiuser Dynamic OFDMA into IEEE 802.11 WLANs - LLC/MAC Extensions and System Performance.” In Proceedings of IEEE International Conference on Communications, ICC 2008, Beijing, China, 19-23 May 2008, 3328--3334, 2008. https://doi.org/10.1109/ICC.2008.626.
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2008 | Conference Paper | LibreCat-ID: 824
S. Lichte, Hermann, Stefan Valentin, Holger Karl, Imad Aad, Luis Loyola, and J{\ Widmer. “Design and Evaluation of a Routing-Informed Cooperative MAC Protocol for Ad Hoc Networks.” In 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}, 1858--1866, 2008. https://doi.org/10.1109/INFOCOM.2008.249.
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2008 | Conference Paper | LibreCat-ID: 825
Valentin, Stefan, Hermann S. Lichte, Holger Karl, Imad Aad, Luis Loyola, and J. Widmer. “Opportunistic Relaying vs. Selective Cooperation: Analyzing the Occurrence-Conditioned Outage Capacity.” In 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, 193--202, 2008. https://doi.org/10.1145/1454503.1454539.
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2008 | Conference Paper | LibreCat-ID: 826
Valentin, Stefan, Tobias Volkhausen, Furuzan Atay Onat, Halim Yanikomeroglu, and Holger Karl. “Decoding-Based Channel Estimation for Selective Cooperation Diversity Protocols.” In Proceedings of the IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008, 15-18 September 2008, Cannes, French Riviera, France, 1--6, 2008. https://doi.org/10.1109/PIMRC.2008.4699545.
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2008 | Conference Paper | LibreCat-ID: 827
Valentin, Stefan, Hermann S. Lichte, Daniel Warneke, Thorsten Biermann, Rafael Funke, and Holger Karl. “Mobile Cooperative WLANs - MAC and Transceiver Design, Prototyping, and Field Measurements.” In Proceedings of the 68th IEEE Vehicular Technology Conference, VTC Fall 2008, 21-24 September 2008, Calgary, Alberta, Canada, 1--5, 2008. https://doi.org/10.1109/VETECF.2008.350.
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2008 | Conference Paper | LibreCat-ID: 828
H. Woldegebreal, Dereje, Stefan Valentin, and Holger Karl. “Incremental Network Coding in Cooperative Transmission Wireless Networks.” In Proceedings of the 68th IEEE Vehicular Technology Conference, VTC Fall 2008, 21-24 September 2008, Calgary, Alberta, Canada, 1--5, 2008. https://doi.org/10.1109/VETECF.2008.346.
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2008 | Conference Paper | LibreCat-ID: 1003
Platz, Daniel, Dereje H Woldegebreal, and Holger Karl. “Random Network Coding in Wireless Sensor Networks: Energy Efficiency via Cross-Layer Approach.” In Spread Spectrum Techniques and Applications, 2008 IEEE 10th International Symposium On, 654--660, 2008.
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2008 | Conference Paper | LibreCat-ID: 1007
Valentin, Stefan, Tobias Volkhausen, Furuzan Atay Onat, Halim Yanikomeroglu, and Holger Karl. “Enabling Partial Forwarding by Decoding-Based One and Two-Stage Selective Cooperation.” In Communications Workshops, 2008. ICC Workshops’ 08. IEEE International Conference On, 129--133, 2008.
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2007 | Report | LibreCat-ID: 2515
Eitzen, Falk, Stefan Valentin, Kai Gossens, Holger Karl, and Oliver Rolfes. Experimental Evaluation of IEEE 802.11a-Based WLANs for Medium Range Communication, 2007.
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2007 | Conference Paper | LibreCat-ID: 1840
Woldegebreal, Dereje H., and Holger Karl. “Multiple-Access Relay Channel with Network Coding and Non-Ideal Source-Relay Channels.” In 2007 4th International Symposium on Wireless Communication Systems. IEEE, 2007. https://doi.org/10.1109/iswcs.2007.4392437.
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2007 | Conference Paper | LibreCat-ID: 1842
Karl, Holger. “Optimizing Sleeping Intervals in Preamble Sampling MAC for WSNs.” Bern / Switzerland: Communication in Distributed Systems (KiVS), 2007 ITG-GI Conference, 2007.
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2007 | Journal Article | LibreCat-ID: 830
Festag, Andreas, Holger Karl, and Adam Wolisz. “Investigation of Multicast-Based Mobility Support in All-IP Cellular Networks.” Wireless Communications and Mobile Computing, no. 3 (2007): 319--339. https://doi.org/10.1002/wcm.328.
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2007 | Conference Paper | LibreCat-ID: 831
Stok, Peter van der, Holger Karl, Fabio De Ambroggi, JeanDominique Decotignie, Frank Siegemund, Kees Lokhorst, and Michael Hellenschmidt. “WASP - Wirelessly Accessible Sensor Populations: A Project Overview.” In Constructing Ambient Intelligence - AmI 2007 Workshops Darmstadt, Germany, November 7-10, 2007 Revised Papers, 426--429, 2007. https://doi.org/10.1007/978-3-540-85379-4_49.
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2007 | Conference Paper | LibreCat-ID: 832
H. Woldegebreal, Dereje, Stefan Valentin, and Holger Karl. “Outage Probability Analysis of Cooperative Transmission Protocols without and with Network Coding: Inter-User Channels Based Comparison.” In 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, 36--44, 2007. https://doi.org/10.1145/1298126.1298136.
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2007 | Conference Paper | LibreCat-ID: 833
Valentin, Stefan, Holger von Malm, and Holger Karl. “Traffic-Aware Asymmetric Cooperation Diversity for Media Streaming in Wireless Networks.” In Proceedings of the IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2007, 3-7 September 2007, Athens, Greece, 1--6, 2007. https://doi.org/10.1109/PIMRC.2007.4394223.
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2007 | Conference Paper | LibreCat-ID: 834
S. Lichte, Hermann, Stefan Valentin, Falk Eitzen, Matthias Stege, Carsten Unger, and Holger Karl. “Integrating Multiuser Dynamic OFDMA into IEEE 802.11a and Prototyping It on a Real-Time Software-Defined Radio Testbed.” In 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, 1--9, 2007. https://doi.org/10.1109/TRIDENTCOM.2007.4444671.
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2007 | Conference Paper | LibreCat-ID: 835
Valentin, Stefan, and Holger Karl. “Effect of User Mobility in Coded Cooperative Systems with Joint Partner and Cooperation Level Selection.” In IEEE Wireless Communications and Networking Conference, WCNC 2007, Hong Kong, China, 11-15 March, 2007, 896--901, 2007. https://doi.org/10.1109/WCNC.2007.170.
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2007 | Conference Paper | LibreCat-ID: 836
Marie Feeney, Laura, Bilge Cetin, Daniel Hollos, Martin Kubisch, Seble Mengesha, and Holger Karl. “Multi-Rate Relaying for Performance Improvement in IEEE 802.11 WLANs.” In Wired/Wireless Internet Communications, 5th International Conference, WWIC 2007, Coimbra, Portugal, May 23-25, 2007, Proceedings, 201--212, 2007. https://doi.org/10.1007/978-3-540-72697-5_17.
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2007 | Conference Paper | LibreCat-ID: 1015
Valentin, Stefan, and Holger Karl. “Analyzing the Effect of Asymmetric Mobility and Channel Configurations on the Outage Performance of Coded Cooperative Systems.” In Proc. of the European Wireless Conference (EW), 2007.
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2007 | Journal Article | LibreCat-ID: 1018
Valentin, Stefan, Hermann S Lichte, Holger Karl, Sebastien Simoens, Guillaume Vivier, Josep Vidal, and Adrian Agustin. “Implementing Cooperative Wireless Networks.” Cognitive Wireless Networks, 2007, 155--178. https://doi.org/10.1007/978-1-4020-5979-7_8.
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2006 | Report | LibreCat-ID: 2518
Valentin, Stefan, Holger von Malm, and Holger Karl. Evaluating the GNU Software Radio Platform for Wireless Testbeds, 2006.
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2006 | Conference Paper | LibreCat-ID: 2523
Valentin, Stefan, Herman S. Lichte, Holger Karl, Guillaume Vivier, Sebastien Simoens, Josep Vidal, Adrian Agustin, and Imad Aad. “Cooperative Wireless Networking beyond Store-and-Forward: Perspectives for PHY and MAC Design,” 2006.
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2006 | Conference Paper | LibreCat-ID: 2526
Dannewitz, Christian, Stefan Berg, and Holger Karl. “An IEEE 802.21-Based Universal Information Service .” In Proc. of the Wireless World Research Forum Meeting , 2006.
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2006 | Journal Article | LibreCat-ID: 837
Hoene, Christian, Holger Karl, and Adam Wolisz. “A Perceptual Quality Model Intended for Adaptive VoIP Applications.” Int. J. Communication Systems, no. 3 (2006): 299--316. https://doi.org/10.1002/dac.755.
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2006 | Journal Article | LibreCat-ID: 838
Gross, James, Hans{-}Florian Geerdes, Holger Karl, and Adam Wolisz. “Performance Analysis of Dynamic OFDMA Systems with Inband Signaling.” IEEE Journal on Selected Areas in Communications, no. 3 (2006): 427--436. https://doi.org/10.1109/JSAC.2005.862386.
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2006 | Journal Article | LibreCat-ID: 839
Carlson, E., Christian Prehofer, Christian Bettstetter, Holger Karl, and Adam Wolisz. “A Distributed End-to-End Reservation Protocol for IEEE 802.11-Based Wireless Mesh Networks.” IEEE Journal on Selected Areas in Communications, no. 11 (2006): 2018--2027. https://doi.org/10.1109/JSAC.2006.881633.
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2006 | Conference Paper | LibreCat-ID: 840
Mattern, Friedemann, Holger Karl, and Kay Römer. “Wireless Sensor Networks.” In Third European Workshop, {EWSN} 2006, Zurich, Switzerland, February 13-15, 2006, Proceedings, edited by Kay R{\"{o}}mer, Holger Karl, and Friedemann Mattern. Lecture Notes in Computer Science, 2006. https://doi.org/10.1007/11669463.
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2005 | Conference Paper | LibreCat-ID: 1843
Aguiar, A., A. Wolisz, H. Lederer, and Holger Karl. “Channel-Adaptive Schedulers with State-of-the-Art Channel Predictors.” In Proceedings of the 11th European Wireless Conference 2005, 2005.
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2005 | Book | LibreCat-ID: 841
Karl, Holger, and Andreas Willig. Protocols and Architectures for Wireless Sensor Networks, 2005.
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2005 | Journal Article | LibreCat-ID: 842
Ebert, Jean-Pierre, Daniel Hollos, Holger Karl, and Marc Löbbers. “Does Multi-Hop Communication Reduce Electromagnetic Exposure?” Comput. J., no. 1 (2005): 72--83. https://doi.org/10.1093/comjnl/bxh062.
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2005 | Journal Article | LibreCat-ID: 843
Savoric, Michael, Holger Karl, Morten Schläger, Tobias Poschwatta, and Adam Wolisz. “Analysis and Performance Evaluation of the EFCM Common Congestion Controller for TCP Connections.” Computer Networks, no. 2 (2005): 269--294. https://doi.org/10.1016/j.comnet.2005.01.012.
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2005 | Journal Article | LibreCat-ID: 844
Gross, James, Stefan Valentin, Holger Karl, and Adam Wolisz. “A Study of Impact of Inband Signalling and Realistic Channel Knowledge for an Example Dynamic OFDM-FDMA System.” European Transactions on Telecommunications, no. 1 (2005): 37--49. https://doi.org/10.1002/ett.1030.
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2005 | Journal Article | LibreCat-ID: 845
Karl, Holger, Thomas Lentsch, and Hartmut Ritter. “Drahtlose Sensornetze.” Praxis Der Informationsverarbeitung Und Kommunikation, no. 2 (2005): 66--67. https://doi.org/10.1515/PIKO.2005.66.
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2005 | Journal Article | LibreCat-ID: 846
Willig, Andreas, and Holger Karl. “Data Transport Reliability in Wireless Sensor Networks. A Survey of Issues and Solutions.” Praxis Der Informationsverarbeitung Und Kommunikation, no. 2 (2005): 86--92. https://doi.org/10.1515/PIKO.2005.86.
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2005 | Conference Paper | LibreCat-ID: 847
Kopke, Andreas, Holger Karl, and Marc Lobbers. “Using Energy Where It Counts: Protecting Important Messages in the Link Layer.” In Wireless Sensor Networks, Second European Workshop, EWSN 2005, Istanbul, Turkey, January 31 - February 2, 2005, Proceedings, 226--235, 2005. https://doi.org/10.1109/EWSN.2005.1462015.
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2005 | Book Chapter | LibreCat-ID: 848
Karl, Holger. “Ad Hoc Networks.” In The Industrial Information Technology Handbook, 1--16, 2005.
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2005 | Conference Paper | LibreCat-ID: 1013
Valentin, Stefan, James Gross, Holger Karl, and Adam Wolisz. “Adaptive Scheduling for Heterogeneous Traffic Flows in Cellular Wireless OFDM-FDMA Systems.” In 10th IFIP International Conference on Personal Wireless Communications/PWC’05, Comar, France, 2005, 2005.
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2005 | Journal Article | LibreCat-ID: 1378
Gross, James, Stefan Valentin, Holger Karl, and Adam Wolisz. “A Study of Impact of Inband Signalling and Realistic Channel Knowledge for an Example Dynamic OFDM-FDMA System.” European Transactions on Telecommunications 16, no. 1 (2005): 37–49. https://doi.org/10.1002/ett.1030.
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2004 | Conference Paper | LibreCat-ID: 2529
Köpke, A., Holger Karl, and A. Wolisz. “Consensus in WSN – Identifying Critical Protocol Mechanisms.” In GI / ITG Fachgespräche Drahtlose Sensornetzwerke, 2004.
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2004 | Conference Paper | LibreCat-ID: 1911
Aguiar, Ana, Holger Karl, and Adam Wolisz. “Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy.” In Proceedings of European Wireless 2004, Barcelona / Spain , 2004.
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2004 | Journal Article | LibreCat-ID: 850
Gross, James, Jirka Klaue, Holger Karl, and Adam Wolisz. “Cross-Layer Optimization of OFDM Transmission Systems for MPEG-4 Video Streaming.” Computer Communications, no. 11 (2004): 1044--1055. https://doi.org/10.1016/j.comcom.2004.01.010.
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2004 | Journal Article | LibreCat-ID: 851
Niebert, Norbert, Andreas Schieder, Henrik Abramowicz, G. Malmgren, Joachim Sachs, Uwe Horn, Christian Prehofer, and Holger Karl. “Ambient Networks: An Architecture for Communication Networks beyond 3G.” IEEE Wireless Communications, no. 2 (2004): 14--22. https://doi.org/10.1109/MWC.2004.1295733.
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2004 | Conference Paper | LibreCat-ID: 852
Handziski, Vlado, Andreas Köpke, Holger Karl, Christian Frank, and Witold Drytkiewicz. “Improving the Energy Efficiency of Directed Diffusion Using Passive Clustering.” In Wireless Sensor Networks, First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings, 172--187, 2004. https://doi.org/10.1007/978-3-540-24606-0_12.
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2004 | Conference Paper | LibreCat-ID: 853
Typpö, Ville, Jochen Eisl, Jan Höller, Ramon Agüero, and Holger Karl. “Research Challenges in Mobility and Moving Networks: An Ambient Networks View.” In 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, 145--155, 2004. https://doi.org/10.1007/0-387-24043-8_15.
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2004 | Conference Paper | LibreCat-ID: 854
Frank, Christian, and Holger Karl. “Consistency Challenges of Service Discovery in Mobile Ad Hoc Networks.” In Proceedings of the 7th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2004, Venice, Italy, October 4-6, 2004, 105--114, 2004. https://doi.org/10.1145/1023663.1023684.
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2004 | Conference Paper | LibreCat-ID: 855
Marie Feeney, Laura, Daniel Hollos, Martin Kubisch, Seble Mengesha, and Holger Karl. “A Geometric Derivation of the Probability of Finding a Relay in Multi-Rate Networks.” In 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, 1312--1317, 2004. https://doi.org/10.1007/978-3-540-24693-0_112.
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2004 | Conference Paper | LibreCat-ID: 856
Hollos, Daniel, Holger Karl, and Adam Wolisz. “Regionalizing Global Optimization Algorithms to Improve the Operation of Large Ad Hoc Networks.” In 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004, 819--824, 2004. https://doi.org/10.1109/WCNC.2004.1311292.
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2004 | Conference Paper | LibreCat-ID: 857
Raguin, David, Martin Kubisch, Holger Karl, and Adam Wolisz. “Queue-Driven Cut-through Medium Access in Wireless Ad Hoc Networks.” In 2004 IEEE Wireless Communications and Networking Conference , WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004, 1909--1914, 2004. https://doi.org/10.1109/WCNC.2004.1311845.
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2004 | Book Chapter | LibreCat-ID: 858
Karl, Holger. “Data Transmission in Mobile Communication Systems.” In Location-Based Services, 207--244, 2004.
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