H. Woldegebreal, D., &; Karl, H. (2008). 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 (pp. 141--155).https://doi.org/10.1007/978-3-540-77690-1_9 
LibreCat: /record/822
DOI: 10.1007/978-3-540-77690-1_9

Valentin, S., Freitag, T., &; Karl, H. (2008). 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 (pp. 3328--3334).https://doi.org/10.1109/ICC.2008.626 
LibreCat: /record/823
DOI: 10.1109/ICC.2008.626

S. Lichte, H., Valentin, S., Karl, H., Aad, I., Loyola, L., &; Widmer, J. (2008). 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 (pp. 1858--1866).https://doi.org/10.1109/INFOCOM.2008.249 
LibreCat: /record/824
DOI: 10.1109/INFOCOM.2008.249

Valentin, S., S. Lichte, H., Karl, H., Aad, I., Loyola, L., &; Widmer, J. (2008). 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 (pp. 193--202).https://doi.org/10.1145/1454503.1454539 
LibreCat: /record/825
DOI: 10.1145/1454503.1454539

Valentin, S., Volkhausen, T., Atay Onat, F., Yanikomeroglu, H., &; Karl, H. (2008). 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 (pp. 1--6).https://doi.org/10.1109/PIMRC.2008.4699545 
LibreCat: /record/826
DOI: 10.1109/PIMRC.2008.4699545

Valentin, S., S. Lichte, H., Warneke, D., Biermann, T., Funke, R., &; Karl, H. (2008). 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 (pp. 1--5).https://doi.org/10.1109/VETECF.2008.350 
LibreCat: /record/827
DOI: 10.1109/VETECF.2008.350

H. Woldegebreal, D., Valentin, S., &; Karl, H. (2008). 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 (pp. 1--5).https://doi.org/10.1109/VETECF.2008.346 
LibreCat: /record/828
DOI: 10.1109/VETECF.2008.346

Platz, D., Woldegebreal, D. H., &; Karl, H. (2008). 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 (pp. 654--660).
LibreCat: /record/1003

Valentin, S., Volkhausen, T., Onat, F. A., Yanikomeroglu, H., &; Karl, H. (2008). Enabling partial forwarding by decoding-based one and two-stage selective cooperation. In Communications Workshops, 2008. ICC Workshops’ 08. IEEE International Conference on (pp. 129--133).
LibreCat: /record/1007

Eitzen, F., Valentin, S., Gossens, K., Karl, H., &; Rolfes, O. (2007). Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication.
LibreCat: /record/2515

Woldegebreal, D. H., &; Karl, H. (2007). Multiple-Access Relay Channel with Network Coding and Non-Ideal Source-Relay Channels. In 2007 4th International Symposium on Wireless Communication Systems. IEEE.https://doi.org/10.1109/iswcs.2007.4392437 
LibreCat: /record/1840
DOI: 10.1109/iswcs.2007.4392437

Karl, H. (2007). Optimizing sleeping intervals in preamble sampling MAC for WSNs. Bern / Switzerland: Communication in Distributed Systems (KiVS), 2007 ITG-GI Conference.
LibreCat: /record/1842

Festag, A., Karl, H., &; Wolisz, A. (2007). Investigation of multicast-based mobility support in all-IP cellular networks. Wireless Communications and Mobile Computing, (3), 319--339.https://doi.org/10.1002/wcm.328 
LibreCat: /record/830
DOI: 10.1002/wcm.328

van der Stok, P., Karl, H., De Ambroggi, F., Decotignie, J., Siegemund, F., Lokhorst, K., &; Hellenschmidt, M. (2007). WASP - Wirelessly Accessible Sensor Populations: A Project Overview. In Constructing Ambient Intelligence - AmI 2007 Workshops Darmstadt, Germany, November 7-10, 2007 Revised Papers (pp. 426--429).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, D., Valentin, S., &; Karl, H. (2007). 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 (pp. 36--44).https://doi.org/10.1145/1298126.1298136 
LibreCat: /record/832
DOI: 10.1145/1298126.1298136

Valentin, S., von Malm, H., &; Karl, H. (2007). 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 (pp. 1--6).https://doi.org/10.1109/PIMRC.2007.4394223 
LibreCat: /record/833
DOI: 10.1109/PIMRC.2007.4394223

S. Lichte, H., Valentin, S., Eitzen, F., Stege, M., Unger, C., &; Karl, H. (2007). 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 (pp. 1--9).https://doi.org/10.1109/TRIDENTCOM.2007.4444671 
LibreCat: /record/834
DOI: 10.1109/TRIDENTCOM.2007.4444671

Valentin, S., &; Karl, H. (2007). 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 (pp. 896--901).https://doi.org/10.1109/WCNC.2007.170 
LibreCat: /record/835
DOI: 10.1109/WCNC.2007.170

Marie Feeney, L., Cetin, B., Hollos, D., Kubisch, M., Mengesha, S., &; Karl, H. (2007). 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 (pp. 201--212).https://doi.org/10.1007/978-3-540-72697-5_17 
LibreCat: /record/836
DOI: 10.1007/978-3-540-72697-5_17

Valentin, S., &; Karl, H. (2007). 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).
LibreCat: /record/1015

Valentin, S., Lichte, H. S., Karl, H., Simoens, S., Vivier, G., Vidal, J., &; Agustin, A. (2007). Implementing cooperative wireless networks. Cognitive Wireless Networks, 155--178.https://doi.org/10.1007/978-1-4020-5979-7_8 
LibreCat: /record/1018
DOI: 10.1007/978-1-4020-5979-7_8

Valentin, S., von Malm, H., &; Karl, H. (2006). Evaluating the GNU Software Radio platform for wireless testbeds.
LibreCat: /record/2518

Valentin, S., Lichte, H. S., Karl, H., Vivier, G.,  Simoens, S., Vidal, J.,  Aad, I. (2006). Cooperative wireless networking beyond store-and-forward: Perspectives for PHY and MAC design.
LibreCat: /record/2523

Dannewitz, C., Berg, S., &; Karl, H. (2006). An IEEE 802.21-based Universal Information Service . In  Proc. of the Wireless World Research Forum Meeting .
LibreCat: /record/2526

Hoene, C., Karl, H., &; Wolisz, A. (2006). A perceptual quality model intended for adaptive VoIP applications. Int. J. Communication Systems, (3), 299--316.https://doi.org/10.1002/dac.755 
LibreCat: /record/837
DOI: 10.1002/dac.755

Gross, J., Geerdes, H.-Florian, Karl, H., &; Wolisz, A. (2006). Performance analysis of dynamic OFDMA systems with inband signaling. IEEE Journal on Selected Areas in Communications, (3), 427--436.https://doi.org/10.1109/JSAC.2005.862386 
LibreCat: /record/838
DOI: 10.1109/JSAC.2005.862386

Carlson, E., Prehofer, C., Bettstetter, C., Karl, H., &; Wolisz, A. (2006). A Distributed End-to-End Reservation Protocol for IEEE 802.11-Based Wireless Mesh Networks. IEEE Journal on Selected Areas in Communications, (11), 2018--2027.https://doi.org/10.1109/JSAC.2006.881633 
LibreCat: /record/839
DOI: 10.1109/JSAC.2006.881633

Mattern, F., Karl, H., &; Römer, K. (2006). Wireless Sensor Networks. In K. R\'22omer, H. Karl, &; F. Mattern (Eds.), Third European Workshop, EWSN 2006, Zurich, Switzerland, February 13-15, 2006, Proceedings.https://doi.org/10.1007/11669463 
LibreCat: /record/840
DOI: 10.1007/11669463

Aguiar, A., Wolisz, A., Lederer, H., &; Karl, H. (2005). Channel-Adaptive Schedulers with State-of-the-Art Channel Predictors. In Proceedings of the 11th European Wireless Conference 2005.
LibreCat: /record/1843

Karl, H., &; Willig, A. (2005). Protocols and architectures for wireless sensor networks.
LibreCat: /record/841

Ebert, J.-P., Hollos, D., Karl, H., &; Löbbers, M. (2005). Does Multi-Hop Communication Reduce Electromagnetic Exposure? Comput. J., (1), 72--83.https://doi.org/10.1093/comjnl/bxh062 
LibreCat: /record/842
DOI: 10.1093/comjnl/bxh062

Savoric, M., Karl, H., Schläger, M., Poschwatta, T., &; Wolisz, A. (2005). Analysis and performance evaluation of the EFCM common congestion controller for TCP connections. Computer Networks, (2), 269--294.https://doi.org/10.1016/j.comnet.2005.01.012 
LibreCat: /record/843
DOI: 10.1016/j.comnet.2005.01.012

Gross, J., Valentin, S., Karl, H., &; Wolisz, A. (2005). A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system. European Transactions on Telecommunications, (1), 37--49.https://doi.org/10.1002/ett.1030 
LibreCat: /record/844
DOI: 10.1002/ett.1030

Karl, H., Lentsch, T., &; Ritter, H. (2005). Drahtlose Sensornetze. Praxis Der Informationsverarbeitung Und Kommunikation, (2), 66--67.https://doi.org/10.1515/PIKO.2005.66 
LibreCat: /record/845
DOI: 10.1515/PIKO.2005.66

Willig, A., &; Karl, H. (2005). Data Transport Reliability in Wireless Sensor Networks. A Survey of Issues and Solutions. Praxis Der Informationsverarbeitung Und Kommunikation, (2), 86--92.https://doi.org/10.1515/PIKO.2005.86 
LibreCat: /record/846
DOI: 10.1515/PIKO.2005.86

Kopke, A., Karl, H., &; Lobbers, M. (2005). 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 (pp. 226--235).https://doi.org/10.1109/EWSN.2005.1462015 
LibreCat: /record/847
DOI: 10.1109/EWSN.2005.1462015

Karl, H. (2005). Ad Hoc Networks. In The Industrial Information Technology Handbook (pp. 1--16).
LibreCat: /record/848

Valentin, S., Gross, J., Karl, H., &; Wolisz, A. (2005). 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.
LibreCat: /record/1013

Gross, J., Valentin, S., Karl, H., &; Wolisz, A. (2005). A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system. European Transactions on Telecommunications, 16(1), 37–49.https://doi.org/10.1002/ett.1030 
LibreCat: /record/1378
DOI: 10.1002/ett.1030

Köpke, A., Karl, H., &; Wolisz, A. (2004). Consensus in WSN – Identifying critical protocol mechanisms. In GI / ITG Fachgespräche Drahtlose Sensornetzwerke.
LibreCat: /record/2529

Aguiar, A., Karl, H., &; Wolisz, A. (2004). Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy. In Proceedings of European Wireless 2004, Barcelona / Spain .
LibreCat: /record/1911

Gross, J., Klaue, J., Karl, H., &; Wolisz, A. (2004). Cross-layer optimization of OFDM transmission systems for MPEG-4 video streaming. Computer Communications, (11), 1044--1055.https://doi.org/10.1016/j.comcom.2004.01.010 
LibreCat: /record/850
DOI: 10.1016/j.comcom.2004.01.010

Niebert, N., Schieder, A., Abramowicz, H., Malmgren, G., Sachs, J., Horn, U.,https://doi.org/10.1109/MWC.2004.1295733__Karl, H. (2004). Ambient networks: An architecture for communication networks beyond 3G. IEEE Wireless Communications, (2), 14--22.https://doi.org/10.1109/MWC.2004.1295733 
LibreCat: /record/851
DOI: 10.1109/MWC.2004.1295733

Handziski, V., Köpke, A., Karl, H., Frank, C., &; Drytkiewicz, W. (2004). 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 (pp. 172--187).https://doi.org/10.1007/978-3-540-24606-0_12 
LibreCat: /record/852
DOI: 10.1007/978-3-540-24606-0_12

Typpö, V., Eisl, J., Höller, J., Agüero, R., &; Karl, H. (2004). Research Challenges in Mobility and Moving Networks: An Ambient Networks View. In Broadband Satellite Comunication Systems and the Challenges of Mobility - IFIP T Workshops on Broadband Satellite Communication Systems and Challenges of Mobility, World Computer Congress, August 22-27, 2004, Toulouse, France (pp. 145--155).https://doi.org/10.1007/0-387-24043-8_15 
LibreCat: /record/853
DOI: 10.1007/0-387-24043-8_15

Frank, C., &; Karl, H. (2004). 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 (pp. 105--114).https://doi.org/10.1145/1023663.1023684 
LibreCat: /record/854
DOI: 10.1145/1023663.1023684

Marie Feeney, L., Hollos, D., Kubisch, M., Mengesha, S., &; Karl, H. (2004). 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-T Networking Conference, Athens, Greece, May 9-14, 2004, Proceedings (pp. 1312--1317).https://doi.org/10.1007/978-3-540-24693-0_112 
LibreCat: /record/855
DOI: 10.1007/978-3-540-24693-0_112

Hollos, D., Karl, H., &; Wolisz, A. (2004). 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 (pp. 819--824).https://doi.org/10.1109/WCNC.2004.1311292 
LibreCat: /record/856
DOI: 10.1109/WCNC.2004.1311292

Raguin, D., Kubisch, M., Karl, H., &; Wolisz, A. (2004). 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 (pp. 1909--1914).https://doi.org/10.1109/WCNC.2004.1311845 
LibreCat: /record/857
DOI: 10.1109/WCNC.2004.1311845

Karl, H. (2004). Data Transmission in Mobile Communication Systems. In Location-Based Services (pp. 207--244).
LibreCat: /record/858