Consensus in WSN – Identifying critical protocol mechanisms
A. Köpke, H. Karl, A. Wolisz, in: GI / ITG Fachgespräche Drahtlose Sensornetzwerke, 2004.

Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy
A. Aguiar, H. Karl, A. Wolisz, in: Proceedings of European Wireless 2004, Barcelona / Spain , 2004.

Cross-layer optimization of OFDM transmission systems for MPEG-4 video streaming
J. Gross, J. Klaue, H. Karl, A. Wolisz, Computer Communications (2004) 1044--1055.

Ambient networks: An architecture for communication networks beyond 3G
N. Niebert, A. Schieder, H. Abramowicz, G. Malmgren, J. Sachs, U. Horn, C. Prehofer, H. Karl, IEEE Wireless Communications (2004) 14--22.

Improving the Energy Efficiency of Directed Diffusion Using Passive Clustering
V. Handziski, A. Köpke, H. Karl, C. Frank, W. Drytkiewicz, in: Wireless Sensor Networks, First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings, 2004, pp. 172--187.

Research Challenges in Mobility and Moving Networks: An Ambient Networks View
V. Typpö, J. Eisl, J. Höller, R. Agüero, H. Karl, 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, 2004, pp. 145--155.

Consistency challenges of service discovery in mobile ad hoc networks
C. Frank, H. Karl, 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, 2004, pp. 105--114.

A Geometric Derivation of the Probability of Finding a Relay in Multi-rate Networks
L. Marie Feeney, D. Hollos, M. Kubisch, S. Mengesha, H. Karl, 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, 2004, pp. 1312--1317.

Regionalizing global optimization algorithms to improve the operation of large ad hoc networks
D. Hollos, H. Karl, A. Wolisz, in: 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004, 2004, pp. 819--824.

Queue-driven cut-through medium access in wireless ad hoc networks
D. Raguin, M. Kubisch, H. Karl, A. Wolisz, in: 2004 IEEE Wireless Communications and Networking Conference , WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004, 2004, pp. 1909--1914.

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

Wireless Sensor Networks
H. Karl, A. Willig, A. Wolisz, eds., Wireless Sensor Networks, First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings, 2004.

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

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

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

Distributed allocation of time slots for real-time traffic in a wireless multi-hop network
E. Carlson, H. Karl, A. Wolisz, C. Prehofer, in: Proc. European Wireless, 2004.

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

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

On the effect of inband signaling and realistic channel knowledge on dynamic OFDM-FDMA systems
J. Gross, H. Karl, A. Wolisz, in: European Wireless 2004, 2004.

A MAC protocol for wireless sensor networks with multiple selectable, fixed-orientation antennas
M. Kubisch, H. Karl, A. Wolisz, Frequenz (2004) 92--96.

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

A common wireless sensor network architecture?
V.  Handziski, A. Köpke, H. Karl, A. Wolisz, A Common Wireless Sensor Network Architecture?, Berlin, 2003.

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

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

The Potential of Relaying in Cellular Networks 
H.-F. Geerdes, H. Karl, in: Proceedings of INOC 2003, Evry/Paris, 2003.

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

The TCP control block interdependence in fixed networks - new performance results
M. Savoric, H. Karl, A. Wolisz, Computer Communications (2003) 366--375.

Ziel-orientierter Entwurf von Multi-hop Medienzugriffsprotokollen
W. Zirwas, J. Habetha, H. Karl, Praxis Der Informationsverarbeitung Und Kommunikation (2003) 184--189.

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

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

EYES - Energy Efficient Sensor Networks
P. J. M. Havinga, S. Etalle, H. Karl, C. Petrioli, M. Zorzi, H. Kip, T. Lentsch, in: Personal Wireless Communications, IFIP-T 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings, 2003, pp. 198--201.

Are Classes of Nodes with Different Power Amplifiers Good for Wireless Multi-hop Networks?
M. Kubisch, H. Karl, A. Wolisz, in: Personal Wireless Communications, IFIP-T 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings, 2003, pp. 841--846.

Chaotic Maps as Parsimonious Bit Error Models of Wireless Channels
A. Köpke, A. Willig, H. Karl, 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, pp. 513--523.

Performance Evaluation of a QoS-Aware Handover Mechanism
S. Sroka, H. Karl, in: Proceedings of the Eighth IEEE Symposium on Computers and Communications (ISCC 2003), 30 June - 3 July 2003, Kiris-Kemer, Turkey, 2003, pp. 117--124.

Applying ad-hoc relaying to improve capacity, energy efficiency, and immission in infrastructure-based WLANs
M. Kubisch, S. Mengesha, D. Hollos, H. Karl, A. Wolisz, 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, pp. 195--206.

Classification and Evaluation of Multicast-Based Mobility Support in All-IP Cellular Networks
A. Festag, H. Karl, A. Wolisz, 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, pp. 233--244.

Distributed algorithms for transmission power control in wireless sensor networks
M. Kubisch, H. Karl, A. Wolisz, L. Charlie Zhong, J. M. Rabaey, in: 2003 IEEE Wireless Communications and Networking, WCNC 2003, New Orleans, LA, USA, 16-20 March, 2003, 2003, pp. 558--563.

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

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

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

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

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

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

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

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

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

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

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

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

QoS-Conditionalized Handoff for Mobile IP
X. Fu, H. Karl, C. Kappler, 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, pp. 721--730.