H. Woldegebreal, Dereje, and Holger Karl. “Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension.”https://doi.org/10.1007/978-3-540-77690-1_9__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 .
LibreCat: /record/822
DOI: 10.1007/978-3-540-77690-1_9

Valentin, Stefan, Thomas Freitag, and Holger Karl. “Integrating Multiuser Dynamic OFDMA into IEEE 802.11 WLANs - LLC/MAC Extensions and System Performance.”https://doi.org/10.1109/ICC.2008.626__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 .
LibreCat: /record/823
DOI: 10.1109/ICC.2008.626

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.”https://doi.org/10.1109/INFOCOM.2008.249__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 .
LibreCat: /record/824
DOI: 10.1109/INFOCOM.2008.249

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.”https://doi.org/10.1145/1454503.1454539__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 .
LibreCat: /record/825
DOI: 10.1145/1454503.1454539

Valentin, Stefan, Tobias Volkhausen, Furuzan Atay Onat, Halim Yanikomeroglu, and Holger Karl. “Decoding-Based Channel Estimation for Selective Cooperation Diversity Protocols.”https://doi.org/10.1109/PIMRC.2008.4699545__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 .
LibreCat: /record/826
DOI: 10.1109/PIMRC.2008.4699545

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.”https://doi.org/10.1109/VETECF.2008.350__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 .
LibreCat: /record/827
DOI: 10.1109/VETECF.2008.350

H. Woldegebreal, Dereje, Stefan Valentin, and Holger Karl. “Incremental Network Coding in Cooperative Transmission Wireless Networks.”https://doi.org/10.1109/VETECF.2008.346__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 .
LibreCat: /record/828
DOI: 10.1109/VETECF.2008.346

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.
LibreCat: /record/1003

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.
LibreCat: /record/1007

Eitzen, Falk, Stefan Valentin, Kai Gossens, Holger Karl, and Oliver Rolfes. Experimental Evaluation of IEEE 802.11a-Based WLANs for Medium Range Communication, 2007.
LibreCat: /record/2515

Woldegebreal, Dereje H., and Holger Karl. “Multiple-Access Relay Channel with Network Coding and Non-Ideal Source-Relay Channels.”https://doi.org/10.1109/iswcs.2007.4392437__In 2007 4th International Symposium on Wireless Communication Systems. IEEE, 2007.https://doi.org/10.1109/iswcs.2007.4392437 .
LibreCat: /record/1840
DOI: 10.1109/iswcs.2007.4392437

Karl, Holger. “Optimizing Sleeping Intervals in Preamble Sampling MAC for WSNs.” Bern / Switzerland: Communication in Distributed Systems (KiVS), 2007 ITG-GI Conference, 2007.
LibreCat: /record/1842

Festag, Andreas, Holger Karl, and Adam Wolisz. “Investigation of Multicast-Based Mobility Support in All-IP Cellular Networks.”https://doi.org/10.1002/wcm.328__Wireless Communications and Mobile Computing, no. 3 (2007): 319--339.https://doi.org/10.1002/wcm.328 .
LibreCat: /record/830
DOI: 10.1002/wcm.328

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.”https://doi.org/10.1007/978-3-540-85379-4_49__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 .
LibreCat: /record/831
DOI: 10.1007/978-3-540-85379-4_49

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.”https://doi.org/10.1145/1298126.1298136__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 .
LibreCat: /record/832
DOI: 10.1145/1298126.1298136

Valentin, Stefan, Holger von Malm, and Holger Karl. “Traffic-Aware Asymmetric Cooperation Diversity for Media Streaming in Wireless Networks.”https://doi.org/10.1109/PIMRC.2007.4394223__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 .
LibreCat: /record/833
DOI: 10.1109/PIMRC.2007.4394223

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.”https://doi.org/10.1109/TRIDENTCOM.2007.4444671__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 .
LibreCat: /record/834
DOI: 10.1109/TRIDENTCOM.2007.4444671

Valentin, Stefan, and Holger Karl. “Effect of User Mobility in Coded Cooperative Systems with Joint Partner and Cooperation Level Selection.”https://doi.org/10.1109/WCNC.2007.170__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 .
LibreCat: /record/835
DOI: 10.1109/WCNC.2007.170

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.”https://doi.org/10.1007/978-3-540-72697-5_17__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 .
LibreCat: /record/836
DOI: 10.1007/978-3-540-72697-5_17

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.
LibreCat: /record/1015