Analyzing the effect of asymmetric mobility and channel configurations on the outage performance of coded cooperative systems - Valentin, Stefan; Karl, Holger (Proc. of the European Wireless Conference (EW))

Implementing cooperative wireless networks - Valentin, Stefan; Lichte, Hermann S; Karl, Holger; Simoens, Sebastien; Vivier, Guillaume; Vidal, Josep; Agustin, Adrian (Cognitive Wireless Networks)

Evaluating the GNU Software Radio platform for wireless testbeds - Valentin, Stefan; von Malm, Holger; Karl, Holger

Cooperative wireless networking beyond store-and-forward: Perspectives for PHY and MAC design - Valentin, Stefan; Lichte, Herman S.; Karl, Holger; Vivier, Guillaume; Simoens, Sebastien; Vidal, Josep; Agustin, Adrian; Aad, Imad

An IEEE 802.21-based Universal Information Service - Dannewitz, Christian; Berg, Stefan; Karl, Holger (Proc. of the Wireless World Research Forum Meeting)

A perceptual quality model intended for adaptive VoIP applications - Hoene, Christian; Karl, Holger; Wolisz, Adam (Int. J. Communication Systems)

Performance analysis of dynamic OFDMA systems with inband signaling - Gross, James; Geerdes, Hans{-}Florian; Karl, Holger; Wolisz, Adam (IEEE Journal on Selected Areas in Communications)

A Distributed End-to-End Reservation Protocol for IEEE 802.11-Based Wireless Mesh Networks - Carlson, E.; Prehofer, Christian; Bettstetter, Christian; Karl, Holger; Wolisz, Adam (IEEE Journal on Selected Areas in Communications)

Wireless Sensor Networks - Mattern, Friedemann; Karl, Holger; Römer, Kay (Third European Workshop, EWSN 2006, Zurich, Switzerland, February 13-15, 2006, Proceedings)

Channel-Adaptive Schedulers with State-of-the-Art Channel Predictors - Aguiar, A.; Wolisz, A.; Lederer, H.; Karl, Holger (Proceedings of the 11th European Wireless Conference 2005)

Protocols and architectures for wireless sensor networks - Karl, Holger; Willig, Andreas

Does Multi-Hop Communication Reduce Electromagnetic Exposure? - Ebert, Jean-Pierre; Hollos, Daniel; Karl, Holger; Löbbers, Marc (Comput. J.)

Analysis and performance evaluation of the EFCM common congestion controller for TCP connections - Savoric, Michael; Karl, Holger; Schläger, Morten; Poschwatta, Tobias; Wolisz, Adam (Computer Networks)

A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system - Gross, James; Valentin, Stefan; Karl, Holger; Wolisz, Adam (European Transactions on Telecommunications)

Drahtlose Sensornetze - Karl, Holger; Lentsch, Thomas; Ritter, Hartmut (Praxis der Informationsverarbeitung und Kommunikation)

Data Transport Reliability in Wireless Sensor Networks. A Survey of Issues and Solutions - Willig, Andreas; Karl, Holger (Praxis der Informationsverarbeitung und Kommunikation)

Using energy where it counts: protecting important messages in the link layer - Kopke, Andreas; Karl, Holger; Lobbers, Marc (Wireless Sensor Networks, Second European Workshop, EWSN 2005, Istanbul, Turkey, January 31 - February 2, 2005, Proceedings)

Ad Hoc Networks - Karl, Holger (The Industrial Information Technology Handbook)

Adaptive scheduling for heterogeneous traffic flows in cellular wireless OFDM-FDMA systems - Valentin, Stefan; Gross, James; Karl, Holger; Wolisz, Adam (10th IFIP International Conference on Personal Wireless Communications/PWC'05, Comar, France, 2005)

A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system - Gross, James; Valentin, Stefan; Karl, Holger; Wolisz, Adam (European Transactions on Telecommunications)

Consensus in WSN – Identifying critical protocol mechanisms - Köpke, A.; Karl, Holger; Wolisz, A. (GI / ITG Fachgespräche Drahtlose Sensornetzwerke)

Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy - Aguiar, Ana; Karl, Holger; Wolisz, Adam (Proceedings of European Wireless 2004, Barcelona / Spain)

Cross-layer optimization of OFDM transmission systems for MPEG-4 video streaming - Gross, James; Klaue, Jirka; Karl, Holger; Wolisz, Adam (Computer Communications)

Ambient networks: An architecture for communication networks beyond 3G - Niebert, Norbert; Schieder, Andreas; Abramowicz, Henrik; Malmgren, G.; Sachs, Joachim; Horn, Uwe; Prehofer, Christian; Karl, Holger (IEEE Wireless Communications)

Improving the Energy Efficiency of Directed Diffusion Using Passive Clustering - Handziski, Vlado; Köpke, Andreas; Karl, Holger; Frank, Christian; Drytkiewicz, Witold (Wireless Sensor Networks, First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings)

Research Challenges in Mobility and Moving Networks: An Ambient Networks View - Typpö, Ville; Eisl, Jochen; Höller, Jan; Agüero, Ramon; Karl, Holger (Broadband Satellite Comunication Systems and the Challenges of Mobility - IFIP TC6 Workshops on Broadband Satellite Communication Systems and Challenges of Mobility, World Computer Congress, August 22-27, 2004, Toulouse, France)

Consistency challenges of service discovery in mobile ad hoc networks - Frank, Christian; Karl, Holger (Proceedings of the 7th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2004, Venice, Italy, October 4-6, 2004)

A Geometric Derivation of the Probability of Finding a Relay in Multi-rate Networks - Marie Feeney, Laura; Hollos, Daniel; Kubisch, Martin; Mengesha, Seble; Karl, Holger (NETWORKING 2004, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication, Third International IFIP-TC6 Networking Conference, Athens, Greece, May 9-14, 2004, Proceedings)

Regionalizing global optimization algorithms to improve the operation of large ad hoc networks - Hollos, Daniel; Karl, Holger; Wolisz, Adam (2004 IEEE Wireless Communications and Networking Conference, WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004)

Queue-driven cut-through medium access in wireless ad hoc networks - Raguin, David; Kubisch, Martin; Karl, Holger; Wolisz, Adam (2004 IEEE Wireless Communications and Networking Conference , WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004)

Data Transmission in Mobile Communication Systems - Karl, Holger (Location-Based Services)

Wireless Sensor Networks

Ambient Networks--Research for Communication Networks Beyond 3G - Niebert, Norbert; Flinck, Hannu; Hancock, Robert; Karl, Holger; Prehofer, Christian (13th IST Mobile and Wireless Communications-Summit 2004)

Throughput study for a dynamic OFDM-FDMA system with inband signaling - Gross, James; Paoluzzi, Irene; Karl, Holger; Wolisz, Adam (Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th)

A hybrid approach for location-based service discovery in vehicular ad hoc networks - Klimin, Nikolay; Enkelmann, Wilfried; Karl, Holger; Wolisz, Adam (Proc. of WIT)

Distributed allocation of time slots for real-time traffic in a wireless multi-hop network - Carlson, Emma; Karl, Holger; Wolisz, Adam; Prehofer, Christian (Proc. European Wireless)

Capacity increase of multi-hop cellular wlans exploiting data rate adaptation and frequency recycling - Mengesha, Seble; Karl, Holger; Wolisz, Adam (Proc. of MedHocNet 2004)

Distributed maintenance of resource reservation paths in multihop 802.11 networks - Carlson, Emma; Bettstetter, Christian; Karl, Holger; Prehofer, Christian; Wolisz, Adam (Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th)

On the effect of inband signaling and realistic channel knowledge on dynamic OFDM-FDMA systems - Gross, James; Karl, Holger; Wolisz, Adam (European Wireless 2004)

A MAC protocol for wireless sensor networks with multiple selectable, fixed-orientation antennas - Kubisch, Martin; Karl, Holger; Wolisz, Adam (Frequenz)

Throughput optimization of dynamic OFDM-FDMA systems with inband signaling - Gross, James; Karl, Holger; Wolisz, Adam (2nd International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks 2004 (WiOpt 2004))

A common wireless sensor network architecture? - Handziski, Vlado; Köpke, Andreas; Karl, Holger; Wolisz, Adam

A Mobility Frame work for OMNeT++ - Drytkiewicz, Witold; Sroka, Steffen; Handzisk, Vlado; Köpke, Andreas; Karl, Holger (Proc. of 3rd International OMNeT++ Workshop at Budapest University of Technology and Economics)

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

The Potential of Relaying in Cellular Networks - Geerdes, Hans-Florian; Karl, Holger (Proceedings of INOC 2003, Evry/Paris)

Channel-aware Schedulers for VoIP and MPEG4 based on Channel Prediction - Aguiar, Ana; Hoene, Christian; Klaue, Jirka; Karl, Holger; Miesmer, Horst; Wolisz, Adam (Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC'03))

The TCP control block interdependence in fixed networks - new performance results - Savoric, Michael; Karl, Holger; Wolisz, Adam (Computer Communications)

Ziel-orientierter Entwurf von Multi-hop Medienzugriffsprotokollen - Zirwas, Wolfgang; Habetha, J.; Karl, Holger (Praxis der Informationsverarbeitung und Kommunikation)

A Framework for Evaluating Effects of Channel Prediction Inaccuracy on the Performance of Channel Adaptive Techniques - Aguiar, Ana; Karl, Holger; Wolisz, Adam; Miesmer, Horst (Proceedings of the International Conference on Wireless Networks, ICWN '03, June 23 - 26, 2003, Las Vegas, Nevada, USA)

Comparison of Heuristic and Optimal Subcarrier Assignment Algorithms - Gross, James; Karl, Holger; H. P. Fitzek, Frank; Wolisz, Adam (Proceedings of the International Conference on Wireless Networks, ICWN '03, June 23 - 26, 2003, Las Vegas, Nevada, USA)

EYES} - Energy Efficient Sensor Networks - J. M. Havinga, Paul; Etalle, Sandro; Karl, Holger; Petrioli, Chiara; Zorzi, Michele; Kip, Harry; Lentsch, Thomas (Personal Wireless Communications, IFIP-TC6 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings)

Are Classes of Nodes with Different Power Amplifiers Good for Wireless Multi-hop Networks? - Kubisch, Martin; Karl, Holger; Wolisz, Adam (Personal Wireless Communications, IFIP-TC6 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings)

Chaotic Maps as Parsimonious Bit Error Models of Wireless Channels - Köpke, Andreas; Willig, Andreas; Karl, Holger (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)

Performance Evaluation of a QoS-Aware Handover Mechanism - Sroka, Steffen; Karl, Holger (Proceedings of the Eighth IEEE Symposium on Computers and Communications (ISCC 2003), 30 June - 3 July 2003, Kiris-Kemer, Turkey)

Applying ad-hoc relaying to improve capacity, energy efficiency, and immission in infrastructure-based WLANs - Kubisch, Martin; Mengesha, Seble; Hollos, Daniel; Karl, Holger; Wolisz, Adam (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)

Classification and Evaluation of Multicast-Based Mobility Support in All-IP Cellular Networks - Festag, Andreas; Karl, Holger; Wolisz, Adam (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)

Distributed algorithms for transmission power control in wireless sensor networks - Kubisch, Martin; Karl, Holger; Wolisz, Adam; Charlie Zhong, Lizhi; M. Rabaey, Jan (2003 IEEE Wireless Communications and Networking, WCNC 2003, New Orleans, LA, USA, 16-20 March, 2003)

A mobility framework for omnet++ - Drytkiewicz, Witold; Sroka, Steffen; Handziski, Vlado; Köpke, Andreas; Karl, Holger (3rd International OMNeT++ workshop)

An overview of energy-efficiency techniques for mobile communication systems - Karl, Holger (Report of AG Mobikom WG7)

Subcarrier allocation for variable bit rate video streams in wireless OFDM systems - Gross, James; Klaue, Jirka; Karl, Holger; Wolisz, Adam (Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th)

A data aggregation framework for wireless sensor networks - Karl, Holger; Löbbers, Marc; Nieberg, Tim (Proc. Dutch Technology Foundation ProRISC Workshop on Circuits, Systems and Signal Processing)

Semantic-aware link layer scheduling of mpeg-4 video streams in wireless systems - Klaue, Jirka; Gross, James; Karl, Holger; Wolisz, Adam (3rd Workshop of Applications and Services in Wireless Networks 2003 (ASWN 2003))

Prototype implementation and performance evaluation of a QoS-conditionalized handoff scheme for mobile IPv6 networks - Neumann, Axel; Fu, Xiaoming; Karl, Holger (Computer Communications, 2003. CCW 2003. Proceedings. 2003 IEEE 18th Annual Workshop on)

Channel-Aware Schedulers For Voip And Mpeg4 For Wireless Communications - Aguiar, Ana Cristina Costa; Hoene, Christian; Klaue, Jirka; Karl, Holger; Miesmer, Horst; Wolisz, Adam (Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC'03))

Relaying in Wireless Access Networks - Karl, Holger; Mengesha, Seble; Hollos, Daniel

Making sensor networks intelligent - Köpke, Andreas; Handziski, Vlado; Karl, Holger (Proc. 7th Wireless World Research Forum (WWRF))

Concepts for a QoS-enabled, TCP/IP-oriented Link Layer in Beyond 3G Networks - Miesmer, Horst; Sanneck, Henning; Aguier, Ana; Karl, Holger (Proc. of 6th Wireless World Forum)

A HiperLAN/2 simulation model in OMNeT++ - Hollos, D.; Karl, Holger (Proc. of 2nd Intl. OMNet Workshop)

New Scheduling Algorithm for Providing Proportional Jitter in Differentiated Service Network - Ngo-Quynh, Thu; Karl, Holger; Wolisz, Adam; Rebensburg, Klaus (Proc. IST Mobile & Wireless Telecommunications Summit 2002.)

QoS-Conditionalized Handoff for Mobile IPv6 - Fu, Xiaoming; Karl, Holger; Kappler, Cornelia (NETWORKING 2002, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications, Second International IFIP-TC6 Networking Conference, Pisa, Italy, May 19-24, 2002, Proceedings)

A protocol extension to HiperLAN/2 to support single-relay networks - Hollos, Daniel; Karl, Holger (Mobile Ad-Hoc Netzwerke, 1. deutscher Workshop über Mobile Ad-Hoc Netzwerke WMAN 2002, 25.-26. März 2002 in Ulm)

M-SCTP: Design and prototypical implementation of an end-to-end mobility concept - Xing, Wei; Karl, Holger; Wolisz, Adam; Müller, Harald (In Proc. 5th Intl. Workshop The Internet Challenge: Technology and Applications)

Using only Proportional Jitter Scheduling at the boundary of a Differentiated Service Network: simple and efficient - Quynh, Thu Ngo; Karl, Holger; Wolisz, Adam; Rebensburg, Klaus (Universal Multiservice Networks, 2002. ECUMN 2002. 2nd European Conference on)

Using akaroa2 with omnet++ - Sroka, Steffen; Karl, Holger (2nd International OMNeT++ Workshop, Berlin, Germany)

New scheduling algorithm for providing proportional jitter in differentiated services network - Ngo-Quynh, Thu; Karl, Holger; Wolisz, Adam; Rebensburg, Klaus (Proceedings of IST mobile communication and wireless telecommunications summit, Thessaloniki, Greece)

Effects of prediction inaccuracy on the performance of channelstate-aware link layer schedulers - Aguiar, A; Karl, Holger; Wolisz, Adam (Proc. of 1st Intl. Conf. on Mobile and Ubiquitous Multimedia)

Relaying in Wireless Access Networks – A Capacity and Energy-Efficiency Perspective - Karl, Holger (Proc. Wireless World Research Forum Kickoff Meeting (WWRF))

Relaying ñ bad for energy, good for capacity? - Karl, Holger

IBMS 2 - Integriertes Bandbreiteneffizientes Mobiles Software-Radio System - Karl, Holger; Hentschel, T. (Zukunftsperspektiven der Mobilkommunikation, Symposium Bundesministerium für Bildung und Forschung)

Improving Goodput by Relaying in Transmission-Power-Limited Wireless Systems - Mengesha, Seble; Karl, Holger; Wolisz, Adam (GI Jahrestagung (1))

Analysing capacity improvements in wireless networks by relaying - Karl, Holger; Mengesha, Seble (Proc. of IEEE Intl. Conf. on Wireless LANs and Home Networks)

Relative jitter packet scheduling for differentiated services - Quynh, T; Karl, Holger; Wolisz, Adam; Rebensburg, Klaus (Proc. 9th IFIP Conf. Perf. Modeling and Eval. of ATM & IP Networks)

The influence of proportional jitter and delay on end to end delay in differentiated service network - Quynh, Thu Ngo; Karl, Holger; Wolisz, Adam; Rebensburg, Klaus (Network Computing and Applications, 2001. NCA 2001. IEEE International Symposium on)

Predictable Network Computing using Message-driven Scheduling - Karl, Holger; Polze, Andreas; Werner, Matthias (Proc. the Workshop on Run-Time Systems for Parallel Programming)

Towards Quality of Service for Parallel Computing: An Overview of the MILAN Project - Karl, Holger (High-Performance Computing and Networking, 7th International Conference, HPCN Europe 1999, Amsterdam, The Netherlands, April 12-14, 1999, Proceedings)

Coscheduling through Synchronized Scheduling Servers -- A Prototype and Experiments - Karl, Holger (Parallel and Distributed Processing, 11 IPPS/SPDP'99 Workshops Held in Conjunction with the 13th International Parallel Processing Symposium and 10th Symposium on Parallel and Distributed Processing, San Juan, Puerto Rico, USA, April 12-16, 1999, Proceedings)

Bridging the gap between distributed shared memory and message passing - Karl, Holger (Concurrency - Practice and Experience)

An infrastructure for network computing with Java applets - Baratloo, Arash; Karaul, Mehmet; Karl, Holger; M. Kedem, Zvi (Concurrency -- Practice and Experience)

Experimental investigation of message latencies in the Totem protocol in the Presence of faults - Karl, Holger; Werner, Matthias; Küttner, Lars (IEEE Proceedings -- Software)

An Experimental Investigation of Message Latencies in the Totem Protocol in the Presence of Faults - Karl, Holger; Werner, Matthias; Kuttner, Lars (24th EUROMICRO '98 Conference, Engineering Systems and Software for the Next Decade, 25-27 August 1998, Vesteras, Sweden)

An optimal checkpointing interval for real-time systems - Karl, Holger; Werner, Matthias (Proc. Intl. Conf. Parallel and Distributed Processing Techniques and Applications)

KnittingFactory: An Infrastructure for Distributed Web Applications - Baratloo, A.; Karaul, M.; Karl, Holger; Kedem, Z.M. (Technical Report)

ReGTime - Rent Gigaflops someTimes - Dreier, Bernd; Huber, Annja; Zahn, Markus; Karl, Holger; Ungerer, Theo (Proceedings Trends in Distributed Systems)

ReGTime - Rent Gigaflops someTimes - Dreier, Bernd; Huber, Annja; Karl, Holger; Ungerer, Theo; Zahn, Markus (Trends in Distributed Systems: CORBA and Beyond, International Workshop TreDS '96, Aachen, Germany, October 1-2, 1996, Proceedings)