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250 Publications
2004 | Conference (Editor) | LibreCat-ID: 859
Karl H, Willig A, Wolisz A, eds. Wireless Sensor Networks. First European Workshop, {EWSN} 2004, Berlin, Germany, January 19-21, 2004, Proceedings; 2004. doi:10.1007/b94854
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2004 | Conference Paper | LibreCat-ID: 988
Niebert N, Flinck H, Hancock R, Karl H, Prehofer C. Ambient Networks--Research for Communication Networks Beyond 3G. In: 13th IST Mobile and Wireless Communications-Summit 2004. ; 2004.
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2004 | Conference Paper | LibreCat-ID: 992
Gross J, Paoluzzi I, Karl H, Wolisz A. Throughput study for a dynamic OFDM-FDMA system with inband signaling. In: Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th. ; 2004:1787--1791.
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2004 | Conference Paper | LibreCat-ID: 997
Carlson E, Karl H, Wolisz A, Prehofer C. Distributed allocation of time slots for real-time traffic in a wireless multi-hop network. In: Proc. European Wireless. ; 2004.
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2004 | Conference Paper | LibreCat-ID: 1002
Carlson E, Bettstetter C, Karl H, Prehofer C, Wolisz A. Distributed maintenance of resource reservation paths in multihop 802.11 networks. In: Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th. ; 2004:2994--2998.
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2004 | Conference Paper | LibreCat-ID: 1006
Gross J, Karl H, Wolisz A. On the effect of inband signaling and realistic channel knowledge on dynamic OFDM-FDMA systems. In: European Wireless 2004. ; 2004.
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2004 | Conference Paper | LibreCat-ID: 1019
Gross J, Karl H, Wolisz A. 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). ; 2004.
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2003 | Conference Paper | LibreCat-ID: 2535
Drytkiewicz W, Sroka S, Handzisk V, Köpke A, Karl H. A Mobility Frame work for OMNeT++. In: Proc. of 3rd International OMNeT++ Workshop at Budapest University of Technology and Economics. ; 2003.
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2003 | Conference Paper | LibreCat-ID: 1913
Fu X, Chen T, Festag A, Karl H, Schäfer G, Fan C. Secure, QoS-Enabled Mobility Support for IP-based Networks. In: Proceedings IP Based Cellular Network Conference IPCN, Paris / France, Dezember . ; 2003.
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2003 | Conference Paper | LibreCat-ID: 1914
Geerdes H-F, Karl H. The Potential of Relaying in Cellular Networks . In: Proceedings of INOC 2003, Evry/Paris. ; 2003.
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2003 | Conference Paper | LibreCat-ID: 1917
Aguiar A, Hoene C, Klaue J, Karl H, Miesmer H, Wolisz A. Channel-aware Schedulers for VoIP and MPEG4 based on Channel Prediction. In: Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC’03). ; 2003.
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2003 | Conference Paper | LibreCat-ID: 862
Aguiar A, Karl H, Wolisz A, Miesmer H. 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}. ; 2003:3--9.
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2003 | Conference Paper | LibreCat-ID: 863
Gross J, Karl H, H. P. Fitzek F, Wolisz A. 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}. ; 2003:249--255.
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2003 | Conference Paper | LibreCat-ID: 864
J. M. Havinga P, Etalle S, Karl H, et al. EYES} - Energy Efficient Sensor Networks. In: Personal Wireless Communications, IFIP-TC6 8th International Conference, PWC 2003, Venice, Italy, September 23-25, 2003, Proceedings. ; 2003:198--201. doi:10.1007/978-3-540-39867-7_20
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2003 | Conference Paper | LibreCat-ID: 865
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-TC6} 8th International Conference, {PWC} 2003, Venice, Italy, September 23-25, 2003, Proceedings. ; 2003:841--846. doi:10.1007/978-3-540-39867-7_78
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2003 | Conference Paper | LibreCat-ID: 866
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
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2003 | Conference Paper | LibreCat-ID: 867
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
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2003 | Conference Paper | LibreCat-ID: 868
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
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2003 | Conference Paper | LibreCat-ID: 869
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
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2003 | Conference Paper | LibreCat-ID: 870
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
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2003 | Conference Paper | LibreCat-ID: 987
Drytkiewicz W, Sroka S, Handziski V, Köpke A, Karl H. A mobility framework for omnet++. In: 3rd International OMNeT++ Workshop. ; 2003.
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2003 | Conference Paper | LibreCat-ID: 991
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.
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2003 | Conference Paper | LibreCat-ID: 994
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.
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2003 | Conference Paper | LibreCat-ID: 999
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.
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2003 | Conference Paper | LibreCat-ID: 1008
Neumann A, Fu X, Karl H. Prototype implementation and performance evaluation of a QoS-conditionalized handoff scheme for mobile IPv6 networks. In: Computer Communications, 2003. CCW 2003. Proceedings. 2003 IEEE 18th Annual Workshop On. ; 2003:24--29.
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2003 | Conference Paper | LibreCat-ID: 1024
Aguiar ACC, Hoene C, Klaue J, Karl H, Miesmer H, Wolisz A. Channel-Aware Schedulers For Voip And Mpeg4 For Wireless Communications. In: Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC’03). ; 2003.
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2002 | Conference Paper | LibreCat-ID: 2541
Köpke A, Handziski V, Karl H. Making sensor networks intelligent. In: Proc. 7th Wireless World Research Forum (WWRF). Eindhoven/Netherlands; 2002.
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2002 | Conference Paper | LibreCat-ID: 2544
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.
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2002 | Conference Paper | LibreCat-ID: 2548
Hollos D, Karl H. A HiperLAN/2 simulation model in OMNeT++. In: Proc. of 2nd Intl. OMNet Workshop. Berlin ; 2002.
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2002 | Conference Paper | LibreCat-ID: 1921
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.
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2002 | Conference Paper | LibreCat-ID: 871
Fu X, Karl H, Kappler C. QoS-Conditionalized Handoff for Mobile IPv6. In: 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. ; 2002:721--730. doi:10.1007/3-540-47906-6_58
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2002 | Conference Paper | LibreCat-ID: 872
Hollos D, Karl H. A protocol extension to HiperLAN/2 to support single-relay networks. In: Mobile Ad-Hoc Netzwerke, 1. Deutscher Workshop Über Mobile Ad-Hoc Netzwerke WMAN 2002, 25.-26. März 2002 in Ulm. ; 2002:91--107.
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2002 | Conference Paper | LibreCat-ID: 990
Xing W, Karl H, Wolisz A, Müller H. M-SCTP: Design and prototypical implementation of an end-to-end mobility concept. In: In Proc. 5th Intl. Workshop The Internet Challenge: Technology and Applications. ; 2002:43.
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2002 | Conference Paper | LibreCat-ID: 1001
Quynh TN, Karl H, Wolisz A, Rebensburg K. Using only Proportional Jitter Scheduling at the boundary of a Differentiated Service Network: simple and efficient. In: Universal Multiservice Networks, 2002. ECUMN 2002. 2nd European Conference On. ; 2002:116--123.
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2002 | Conference Paper | LibreCat-ID: 1009
Sroka S, Karl H. Using akaroa2 with omnet++. In: 2nd International OMNeT++ Workshop, Berlin, Germany. ; 2002.
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2002 | Conference Paper | LibreCat-ID: 1020
Aguiar A, Karl H, Wolisz A. Effects of prediction inaccuracy on the performance of channelstate-aware link layer schedulers. In: Proc. of 1st Intl. Conf. on Mobile and Ubiquitous Multimedia. ; 2002:21--33.
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2001 | Conference Paper | LibreCat-ID: 2552
Karl H. Relaying in Wireless Access Networks – A Capacity and Energy-Efficiency Perspective . In: Proc. Wireless World Research Forum Kickoff Meeting (WWRF). München; 2001.
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2001 | Conference Paper | LibreCat-ID: 2554
Karl H. Relaying ñ bad for energy, good for capacity? In: Rom/Italy: Eork-in-progress session of mobicom 2001; 2001.
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2001 | Conference Paper | LibreCat-ID: 2556
Karl H, Hentschel T. IBMS 2 - Integriertes Bandbreiteneffizientes Mobiles Software-Radio System. In: Zukunftsperspektiven Der Mobilkommunikation, Symposium Bundesministerium Für Bildung Und Forschung. ; 2001.
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2001 | Conference Paper | LibreCat-ID: 873
Mengesha S, Karl H, Wolisz A. Improving Goodput by Relaying in Transmission-Power-Limited Wireless Systems. In: GI Jahrestagung (1). ; 2001:537--544.
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2001 | Conference Paper | LibreCat-ID: 995
Karl H, Mengesha S. Analysing capacity improvements in wireless networks by relaying. In: Proc. of IEEE Intl. Conf. on Wireless LANs and Home Networks. ; 2001:339--348.
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2001 | Conference Paper | LibreCat-ID: 996
Quynh T, Karl H, Wolisz A, Rebensburg K. Relative jitter packet scheduling for differentiated services. In: Proc. 9th IFIP Conf. Perf. Modeling and Eval. of ATM & IP Networks. ; 2001.
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2001 | Conference Paper | LibreCat-ID: 1016
Quynh TN, Karl H, Wolisz A, Rebensburg K. The influence of proportional jitter and delay on end to end delay in differentiated service network. In: Network Computing and Applications, 2001. NCA 2001. IEEE International Symposium On. ; 2001:354--357.
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2000 | Conference Paper | LibreCat-ID: 1920
Karl H, Polze A, Werner M. Predictable Network Computing using Message-driven Scheduling. In: Proc. the Workshop on Run-Time Systems for Parallel Programming. ; 2000.
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1999 | Conference Paper | LibreCat-ID: 874
Karl H. Towards Quality of Service for Parallel Computing: An Overview of the MILAN Project. In: High-Performance Computing and Networking, 7th International Conference, HPCN Europe 1999, Amsterdam, The Netherlands, April 12-14, 1999, Proceedings. ; 1999:841--850. doi:10.1007/BFb0100644
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1999 | Conference Paper | LibreCat-ID: 875
Karl H. Coscheduling through Synchronized Scheduling Servers -- A Prototype and Experiments. In: 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. ; 1999:1115--1129. doi:10.1007/BFb0097997
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1998 | Conference Paper | LibreCat-ID: 879
Karl H, Werner M, Kuttner L. An Experimental Investigation of Message Latencies in the Totem Protocol in the Presence of Faults. In: 24th EUROMICRO ’98 Conference, Engineering Systems and Software for the Next Decade, 25-27 August 1998, Vesteras, Sweden. ; 1998:10468--10475. doi:10.1109/EURMIC.1998.711841
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1998 | Conference Paper | LibreCat-ID: 1012
Karl H, Werner M. An optimal checkpointing interval for real-time systems. In: Proc. Intl. Conf. Parallel and Distributed Processing Techniques and Applications. ; 1998:604--612.
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1996 | Conference Paper | LibreCat-ID: 1918
Dreier B, Huber A, Zahn M, Karl H, Ungerer T. ReGTime - Rent Gigaflops someTimes. In: Proceedings Trends in Distributed Systems. ; 1996.
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1996 | Conference Paper | LibreCat-ID: 880
Dreier B, Huber A, Karl H, Ungerer T, Zahn M. ReGTime - Rent Gigaflops someTimes. In: Trends in Distributed Systems: CORBA and Beyond, International Workshop TreDS ’96, Aachen, Germany, October 1-2, 1996, Proceedings. ; 1996:84--93. doi:10.1007/3-540-61842-2_28
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