J. M. Havinga P, Etalle S, Karl H, et al. EYES - Energy Efficient Sensor Networks. In: Personal Wireless Communications, IFIP-T 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings. ; 2003:198--201. doi:10.1007/978-3-540-39867-7_20

Kubisch M, Karl H, Wolisz A. 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. ; 2003:841--846. doi:10.1007/978-3-540-39867-7_78

Köpke A, Willig A, Karl H. 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. ; 2003:513--523. doi:10.1109/INFCOM.2003.1208702

Sroka S, Karl H. 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. ; 2003:117--124. doi:10.1109/ISCC.2003.1214110

Kubisch M, Mengesha S, Hollos D, Karl H, Wolisz A. 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. ; 2003:195--206. doi:10.1007/978-3-642-55569-5_16

Festag A, Karl H, Wolisz A. 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. ; 2003:233--244. doi:10.1007/978-3-642-55569-5_19

Kubisch M, Karl H, Wolisz A, Charlie Zhong L, M. Rabaey J. 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. ; 2003:558--563. doi:10.1109/WCNC.2003.1200410

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

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

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

Karl H, Löbbers M, Nieberg T. A data aggregation framework for wireless sensor networks. In: Proc. Dutch Technology Foundation ProRISC Workshop on Circuits, Systems and Signal Processing. ; 2003.

Klaue J, Gross J, Karl H, Wolisz A. Semantic-aware link layer scheduling of mpeg-4 video streams in wireless systems. In: 3rd Workshop of Applications and Services in Wireless Networks 2003 (ASWN 2003). ; 2003.

Neumann A, Fu X, Karl H. Prototype implementation and performance evaluation of a QoS-conditionalized handoff scheme for mobile IP networks. In: Computer Communications, 2003. CCW 2003. Proceedings. 2003 IEEE 18th Annual Workshop On. ; 2003:24--29.

Aguiar ACC, Hoene C, Klaue J, Karl H, Miesmer H, Wolisz A. Channel-Aware Schedulers For Voip And Mpe For Wireless Communications. In: Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC’03). ; 2003.

Karl H, Mengesha S, Hollos D. Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002; 2002.

Köpke A, Handziski V, Karl H.  Making sensor networks intelligent. In: Proc. 7th Wireless World Research Forum (WWRF). Eindhoven/Netherlands; 2002.

Miesmer H, Sanneck H, Aguier A, Karl H. Concepts for a QoS-enabled, TCP/IP-oriented Link Layer in Beyond 3G Networks. In: Proc. of 6th Wireless World Forum. London / GB; 2002.

Hollos D, Karl H. A HiperLAN/2 simulation model in OMNeT++. In: Proc. of 2nd Intl. OMNet Workshop. Berlin ; 2002.

Ngo-Quynh T, Karl H, Wolisz A, Rebensburg K. New Scheduling Algorithm for Providing Proportional Jitter in  Differentiated Service Network . In: Proc. IST Mobile &; Wireless Telecommunications Summit 2002. ; 2002.

Fu X, Karl H, Kappler C. QoS-Conditionalized Handoff for Mobile IP. In: NETWORKING 2002, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications, Second International IFIP-T Networking Conference, Pisa, Italy, May 19-24, 2002, Proceedings. ; 2002:721--730. doi:10.1007/3-540-47906-6_58