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).

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 

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

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.

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

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 

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 

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 

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 

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.