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363 Publications
2009 | Conference Paper | LibreCat-ID: 1005
T. Biermann, Z. A. Polgar, and H. Karl, “Cooperation and coding framework,” in Communications Workshops, 2009. ICC Workshops 2009. IEEE International Conference on, 2009, pp. 1--5.
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2009 | Conference Paper | LibreCat-ID: 1010
S. Valentin, D. H. Woldegebreal, T. Volkhausen, and H. Karl, “Combining for cooperative WLANs-a reality check based on prototype measurements,” in Communications Workshops, 2009. ICC Workshops 2009. IEEE International Conference on, 2009, pp. 1--5.
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2009 | Conference Paper | LibreCat-ID: 1011
T. Volkhausen, D. H. Woldegebreal, and H. Karl, “Improving network coded cooperation by soft information,” in Sensor, Mesh and Ad Hoc Communications and Networks Workshops, 2009. SECON Workshops’ 09. 6th Annual IEEE Communications Society Conference on, 2009, pp. 1--6.
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2008 | Report | LibreCat-ID: 2513
T. Biermann, C. Dannewitz, and H. Karl, Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks. 2008.
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2008 | Conference Paper | LibreCat-ID: 2356
A. Brinkmann et al., “Employing WS-BPEL Design Patterns for Grid Service Orchestration using a Standard WS-BPEL Engine and a Grid Middleware,” in Proc. Cracow Grid Workshop (CGW), 2008, pp. 103–110.
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2008 | Conference (Editor) | LibreCat-ID: 2376
A. Brinkmann and H. Karl, Eds., Proceedings of the 1. GI/ITG KuVS Fachgespräch Virtualisierung. Paderborn Center for Parallel Computing, Paderborn University, 2008.
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2008 | Book Chapter | LibreCat-ID: 1841
D. H. Woldegebreal and H. Karl, “Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension,” in Lecture Notes in Computer Science, Berlin, Heidelberg: Springer Berlin Heidelberg, 2008, pp. 141–155.
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2008 | Conference Paper | LibreCat-ID: 822
D. H. Woldegebreal and H. 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, 2008, pp. 141--155.
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2008 | Conference Paper | LibreCat-ID: 823
S. Valentin, T. Freitag, and H. 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, 2008, pp. 3328--3334.
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2008 | Conference Paper | LibreCat-ID: 824
H. S. Lichte, S. Valentin, H. Karl, I. Aad, L. 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}, 2008, pp. 1858--1866.
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2008 | Conference Paper | LibreCat-ID: 825
S. Valentin, H. S. Lichte, H. Karl, I. Aad, L. 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, 2008, pp. 193--202.
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2008 | Conference Paper | LibreCat-ID: 826
S. Valentin, T. Volkhausen, F. Atay Onat, H. Yanikomeroglu, and H. 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, 2008, pp. 1--6.
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2008 | Conference Paper | LibreCat-ID: 827
S. Valentin, H. S. Lichte, D. Warneke, T. Biermann, R. Funke, and H. 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, 2008, pp. 1--5.
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2008 | Conference Paper | LibreCat-ID: 828
D. H. Woldegebreal, S. Valentin, and H. 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, 2008, pp. 1--5.
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2008 | Conference Paper | LibreCat-ID: 1003
D. Platz, D. H. Woldegebreal, and H. 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, 2008, pp. 654--660.
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2008 | Conference Paper | LibreCat-ID: 1007
S. Valentin, T. Volkhausen, F. A. Onat, H. Yanikomeroglu, and H. Karl, “Enabling partial forwarding by decoding-based one and two-stage selective cooperation,” in Communications Workshops, 2008. ICC Workshops’ 08. IEEE International Conference on, 2008, pp. 129--133.
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2007 | Report | LibreCat-ID: 2515
F. Eitzen, S. Valentin, K. Gossens, H. Karl, and O. Rolfes, Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication. 2007.
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2007 | Conference Paper | LibreCat-ID: 1842
H. Karl, “Optimizing sleeping intervals in preamble sampling MAC for WSNs,” 2007.
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2007 | Conference Paper | LibreCat-ID: 832
D. H. Woldegebreal, S. Valentin, and H. 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, 2007, pp. 36--44.
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2007 | Conference Paper | LibreCat-ID: 833
S. Valentin, H. von Malm, and H. 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, 2007, pp. 1--6.
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2007 | Conference Paper | LibreCat-ID: 834
H. S. Lichte, S. Valentin, F. Eitzen, M. Stege, C. Unger, and H. 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, 2007, pp. 1--9.
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| DOI
2007 | Conference Paper | LibreCat-ID: 835
S. Valentin and H. 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, 2007, pp. 896--901.
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2007 | Conference Paper | LibreCat-ID: 836
L. Marie Feeney, B. Cetin, D. Hollos, M. Kubisch, S. Mengesha, and H. 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, 2007, pp. 201--212.
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2007 | Conference Paper | LibreCat-ID: 1015
S. Valentin and H. 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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2006 | Report | LibreCat-ID: 2518
S. Valentin, H. von Malm, and H. Karl, Evaluating the GNU Software Radio platform for wireless testbeds. 2006.
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2006 | Conference Paper | LibreCat-ID: 2523
S. Valentin et al., “Cooperative wireless networking beyond store-and-forward: Perspectives for PHY and MAC design,” 2006.
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2006 | Conference Paper | LibreCat-ID: 2526
C. Dannewitz, S. Berg, and H. Karl, “An IEEE 802.21-based Universal Information Service ,” in Proc. of the Wireless World Research Forum Meeting , 2006.
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2005 | Conference Paper | LibreCat-ID: 1843
A. Aguiar, A. Wolisz, H. Lederer, and H. 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
H. Karl and A. Willig, Protocols and architectures for wireless sensor networks. 2005.
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2005 | Conference Paper | LibreCat-ID: 847
A. Kopke, H. Karl, and M. 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, 2005, pp. 226--235.
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2005 | Book Chapter | LibreCat-ID: 848
H. Karl, “Ad Hoc Networks,” in The Industrial Information Technology Handbook, 2005, pp. 1--16.
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2005 | Conference Paper | LibreCat-ID: 1013
S. Valentin, J. Gross, H. Karl, and A. 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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2004 | Conference Paper | LibreCat-ID: 2529
A. Köpke, H. Karl, and A. Wolisz, “Consensus in WSN – Identifying critical protocol mechanisms,” in GI / ITG Fachgespräche Drahtlose Sensornetzwerke, 2004.
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