Karl, H., &; Willig, A. (2005). Protocols and architectures for wireless sensor networks.

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 

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 

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 

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 

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 

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 

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

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.

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 

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

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 .

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 

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 

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 

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 

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 

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 

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 

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 

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

Karl, H., Willig, A., &; Wolisz, A. (Eds.). (2004). Wireless Sensor Networks. First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings.https://doi.org/10.1007/b94854 

Niebert, N., Flinck, H., Hancock, R., Karl, H., &; Prehofer, C. (2004). Ambient Networks--Research for Communication Networks Beyond 3G. In 13th IST Mobile and Wireless Communications-Summit 2004.

Gross, J., Paoluzzi, I., Karl, H., &; Wolisz, A. (2004). Throughput study for a dynamic OFDM-FDMA system with inband signaling. In Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th (pp. 1787--1791).

Klimin, N., Enkelmann, W., Karl, H., &; Wolisz, A. (2004). A hybrid approach for location-based service discovery in vehicular ad hoc networks. Proc. of WIT.

Carlson, E., Karl, H., Wolisz, A., &; Prehofer, C. (2004). Distributed allocation of time slots for real-time traffic in a wireless multi-hop network. In Proc. European Wireless. Barcelona/Spain.

Mengesha, S., Karl, H., &; Wolisz, A. (2004). Capacity increase of multi-hop cellular wlans exploiting data rate adaptation and frequency recycling. Proc. of MedHocNet 2004.

Carlson, E., Bettstetter, C., Karl, H., Prehofer, C., &; Wolisz, A. (2004). Distributed maintenance of resource reservation paths in multihop 802.11 networks. In Vehicular Technology Conference, 2004. V-Fall. 2004 IEEE 60th (pp. 2994--2998).

Gross, J., Karl, H., &; Wolisz, A. (2004). On the effect of inband signaling and realistic channel knowledge on dynamic OFDM-FDMA systems. In European Wireless 2004.

Kubisch, M., Karl, H., &; Wolisz, A. (2004). A MAC protocol for wireless sensor networks with multiple selectable, fixed-orientation antennas. Frequenz, (3–4), 92--96.https://doi.org//10.1.1.3.3185 

Gross, J., Karl, H., &; Wolisz, A. (2004). Throughput optimization of dynamic OFDM-FDMA systems with inband signaling. In 2nd International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks 2004 (WiOpt 2004).

Handziski, V., Köpke, A., Karl, H., &; Wolisz, A. (2003). A common wireless sensor network architecture? Berlin.

Drytkiewicz, W., Sroka, S., Handzisk, V., Köpke, A., &; Karl, H. (2003). A Mobility Frame work for OMNeT++. In Proc. of 3rd International OMNeT++ Workshop at Budapest University of Technology and Economics.

Fu, X., Chen, T., Festag, A., Karl, H., Schäfer, G., &; Fan, C. (2003). Secure, QoS-Enabled Mobility Support for IP-based Networks. In Proceedings IP Based Cellular Network Conference IPCN, Paris / France, Dezember .

Geerdes, H.-F., &; Karl, H. (2003). The Potential of Relaying in Cellular Networks . In Proceedings of INOC 2003, Evry/Paris.

Aguiar, A., Hoene, C., Klaue, J., Karl, H., Miesmer, H., &; Wolisz, A. (2003). Channel-aware Schedulers for VoIP and MPE based on Channel Prediction. In Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC’03).

Savoric, M., Karl, H., &; Wolisz, A. (2003). The TCP control block interdependence in fixed networks - new performance results. Computer Communications, (4), 366--375.https://doi.org/10.1016/S0140-3664(02)00155-X 

Zirwas, W., Habetha, J., &; Karl, H. (2003). Ziel-orientierter Entwurf von Multi-hop Medienzugriffsprotokollen. Praxis Der Informationsverarbeitung Und Kommunikation, (4), 184--189.https://doi.org/10.1515/PIKO.2003.184 

Aguiar, A., Karl, H., Wolisz, A., &; Miesmer, H. (2003). A Framework for Evaluating Effects of Channel Prediction Inaccuracy on the Performance of Channel Adaptive Techniques. In Proceedings of the International Conference on Wireless Networks, ICWN ’03, June 23 - 26, 2003, Las Vegas, Nevada, USA (pp. 3--9).

Gross, J., Karl, H., H. P. Fitzek, F., &; Wolisz, A. (2003). Comparison of Heuristic and Optimal Subcarrier Assignment Algorithms. In Proceedings of the International Conference on Wireless Networks, ICWN ’03, June 23 - 26, 2003, Las Vegas, Nevada, USA (pp. 249--255).

J. M. Havinga, P., Etalle, S., Karl, H., Petrioli, C., Zorzi, M., Kip, H., &; Lentsch, T. (2003). EYES - Energy Efficient Sensor Networks. In Personal Wireless Communications, IFIP-T 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings (pp. 198--201).https://doi.org/10.1007/978-3-540-39867-7_20 

Kubisch, M., Karl, H., &; Wolisz, A. (2003). Are Classes of Nodes with Different Power Amplifiers Good for Wireless Multi-hop Networks? In Personal Wireless Communications, IFIP-T 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings (pp. 841--846).https://doi.org/10.1007/978-3-540-39867-7_78 

Köpke, A., Willig, A., &; Karl, H. (2003). Chaotic Maps as Parsimonious Bit Error Models of Wireless Channels. In Proceedings IEEE INFOCOM 2003, The 22nd Annual Joint Conference of the IEEE Computer and Communications Societies, San Franciso, CA, USA, March 30 - April 3, 2003 (pp. 513--523).https://doi.org/10.1109/INFCOM.2003.1208702 

Sroka, S., &; Karl, H. (2003). Performance Evaluation of a QoS-Aware Handover Mechanism. In Proceedings of the Eighth IEEE Symposium on Computers and Communications (ISCC 2003), 30 June - 3 July 2003, Kiris-Kemer, Turkey (pp. 117--124).https://doi.org/10.1109/ISCC.2003.1214110 

Kubisch, M., Mengesha, S., Hollos, D., Karl, H., &; Wolisz, A. (2003). Applying ad-hoc relaying to improve capacity, energy efficiency, and immission in infrastructure-based WLANs. In Kommunikation in Verteilten Systemen KiVS, 13. Fachtagung Kommunikation in Verteilten Systemen. KiVS 2003, 25.-28. Februar 2003, Leipzig, Eine Veranstaltung der Informationstechnischen Gesellschaft (ITG/VDE) unter Beteiligung der Gesellschaft für Informatik (GI) Ausgerichtet von der Universität Leipzig (pp. 195--206).https://doi.org/10.1007/978-3-642-55569-5_16 

Festag, A., Karl, H., &; Wolisz, A. (2003). Classification and Evaluation of Multicast-Based Mobility Support in All-IP Cellular Networks. In Kommunikation in Verteilten Systemen (KiVS), 13. Fachtagung Kommunikation in Verteilten Systemen. KiVS 2003, 25.-28. Februar 2003, Leipzig, Eine Veranstaltung der Informationstechnischen Gesellschaft (ITG/VDE) unter Beteiligung der Gesellschaft für Informatik (GI) Ausgerichtet von der Universität Leipzig (pp. 233--244).https://doi.org/10.1007/978-3-642-55569-5_19 

Kubisch, M., Karl, H., Wolisz, A., Charlie Zhong, L., &; M. Rabaey, J. (2003). Distributed algorithms for transmission power control in wireless sensor networks. In 2003 IEEE Wireless Communications and Networking, WCNC 2003, New Orleans, LA, USA, 16-20 March, 2003 (pp. 558--563).https://doi.org/10.1109/WCNC.2003.1200410 

Drytkiewicz, W., Sroka, S., Handziski, V., Köpke, A., &; Karl, H. (2003). A mobility framework for omnet++. In 3rd International OMNeT++ workshop.

Karl, H. (2003). An overview of energy-efficiency techniques for mobile communication systems. Report of AG Mobikom W.

Gross, J., Klaue, J., Karl, H., &; Wolisz, A. (2003). Subcarrier allocation for variable bit rate video streams in wireless OFDM systems. In Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th (pp. 2481--2485).