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61 Publications


2024 | Journal Article | LibreCat-ID: 53531
S. Ghafouri et al., “IPA: Inference Pipeline Adaptation to Achieve High Accuracy and Cost-Efficiency,” Journal of Systems Research (JSys).
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2022 | Journal Article | LibreCat-ID: 32854
A. Redder, A. Ramaswamy, and H. Karl, “Practical Network Conditions for the Convergence of Distributed Optimization,” IFAC-PapersOnLine, vol. 55, no. 13, pp. 133–138, 2022.
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2021 | Journal Article | LibreCat-ID: 21808 | OA
S. B. Schneider et al., “Self-Learning Multi-Objective Service Coordination Using Deep Reinforcement Learning,” Transactions on Network and Service Management, 2021.
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2020 | Journal Article | LibreCat-ID: 16278
N. Nomikos et al., “A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices,” Vehicular Communications, 2020.
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2020 | Journal Article | LibreCat-ID: 16280
F. Li, D. Yu, H. Yang, J. Yu, H. Karl, and X. Cheng, “Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey,” IEEE Wireless Communications, pp. 24–30, 2020.
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2020 | Journal Article | LibreCat-ID: 13770
H. Karl, D. Kundisch, F. Meyer auf der Heide, and H. Wehrheim, “A Case for a New IT Ecosystem: On-The-Fly Computing,” Business & Information Systems Engineering, vol. 62, no. 6, pp. 467–481, 2020, doi: 10.1007/s12599-019-00627-x.
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2019 | Journal Article | LibreCat-ID: 8113 | OA
M. Peuster, C. Dröge, C. Boos, and H. Karl, “Joint testing and profiling of microservice-based network services using TTCN-3,” ICT Express, 2019.
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2019 | Journal Article | LibreCat-ID: 8795 | OA
M. Peuster, H. Küttner, and H. Karl, “A flow handover protocol to support state migration in softwarized networks,” International Journal of Network Management, 2019.
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2019 | Journal Article | LibreCat-ID: 9823
T. Soenen et al., “Empowering Network Service Developers: Enhanced NFV DevOps and Programmable MANO,” IEEE Communications Magazine, pp. 89–95, 2019.
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2019 | Journal Article | LibreCat-ID: 9824 | OA
M. Peuster et al., “Introducing Automated Verification and Validation for Virtualized Network Functions and Services,” IEEE Communications Magazine, pp. 96–102, 2019.
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2019 | Journal Article | LibreCat-ID: 15741
A. S. Leong, A. Ramaswamy, D. E. Quevedo, H. Karl, and L. Shi, “Deep reinforcement learning for wireless sensor scheduling in cyber–physical systems,” Automatica, 2019.
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2019 | Journal Article | LibreCat-ID: 10325 | OA
M. Peuster, M. Marchetti, G. García de Blas, and H. Karl, “Automated testing of NFV orchestrators against carrier-grade multi-PoP scenarios using emulation-based smoke testing,” EURASIP Journal on Wireless Communications and Networking, 2019.
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2018 | Journal Article | LibreCat-ID: 3152 | OA
S. Dräxler, H. Karl, and Z. A. Mann, “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services,” IEEE Transactions on Network and Service Management, 2018.
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2017 | Journal Article | LibreCat-ID: 58 | OA
S. Dräxler and H. Karl, “Specification, Composition, and Placement of Network Services with Flexible Structures,” International Journal of Network Management, no. 2, pp. 1--16, 2017.
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2017 | Journal Article | LibreCat-ID: 64
M. Keller and H. Karl, “Response-Time-Optimised Service Deployment: MILP Formulations of Piece-wise Linear Functions Approximating Non-linear Bivariate Mixed-integer Functions,” IEEE Transactions on Network and Service Management, no. 1, pp. 121--135, 2017.
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2016 | Journal Article | LibreCat-ID: 714 | OA
H. Karl et al., “DevOps for network function virtualisation: an architectural approach,” Transactions on Emerging Telecommunications Technologies, vol. 27, no. 9, pp. 1206–1215, 2016.
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2016 | Journal Article | LibreCat-ID: 726
P. Wette and H. Karl, “DCT2Gen: A traffic generator for data centers,” Computer Communications, pp. 45--58, 2016.
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2016 | Journal Article | LibreCat-ID: 1373
M. Herlich, N. Bredenbals, and H. Karl, “Delayed (de-)activation in servers with a sleep mode,” Sustainable Computing: Informatics and Systems, vol. 10, pp. 48–55, 2016.
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2014 | Journal Article | LibreCat-ID: 467
J. Künsemöller and H. Karl, “A Game-Theoretic Approach to the Financial Benefits of Infrastructure-as-a-Service,” Future Generation Computer Systems, pp. 44--52, 2014.
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2014 | Journal Article | LibreCat-ID: 753
F. Beister, M. Dräxler, J. Aelken, and H. Karl, “Power model design for ICT systems -- A generic approach,” Computer Communications, pp. 77--85, 2014.
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2014 | Journal Article | LibreCat-ID: 754
R. Azeem M. Khan and H. Karl, “MAC Protocols for Cooperative Diversity in Wireless LANs and Wireless Sensor Networks,” IEEE Communications Surveys and Tutorials, no. 1, pp. 46--63, 2014.
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2014 | Journal Article | LibreCat-ID: 1375
F. Beister, M. Dräxler, J. Aelken, and H. Karl, “Power model design for ICT systems – A generic approach,” Computer Communications, vol. 50, pp. 77–85, 2014.
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2013 | Journal Article | LibreCat-ID: 770
C. Dannewitz, D. Kutscher, B. Ohlman, S. Farrell, B. Ahlgren, and H. Karl, “Network of Information (NetInf) - An information-centric networking architecture,” Computer Communications, no. 7, pp. 721--735, 2013.
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2013 | Journal Article | LibreCat-ID: 771
M. Dräxler, T. Biermann, and H. Karl, “Improving Cooperative Transmission Feasibility by Network Reconfiguration in Limited Backhaul Networks,” International Journal of Wireless Information Networks, no. 3, pp. 183--194, 2013.
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2013 | Journal Article | LibreCat-ID: 769
T. Biermann, L. Scalia, C. Choi, W. Kellerer, and H. Karl, “How backhaul networks influence the feasibility of coordinated multipoint in cellular networks,” {IEEE} Communications Magazine, no. 8, 2013.
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2012 | Journal Article | LibreCat-ID: 782
T. Biermann, L. Scalia, C. Choi, H. Karl, and W. Kellerer, “CoMP clustering and backhaul limitations in cooperative cellular mobile access networks,” Pervasive and Mobile Computing, no. 5, pp. 662--681, 2012.
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2012 | Journal Article | LibreCat-ID: 783
A. Willig, H. Karl, and D. Kipnis, “Segment-based packet combining: how to schedule a dense relayer cluster?,” Wireless Networks, no. 2, pp. 199--213, 2012.
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2011 | Journal Article | LibreCat-ID: 793
B. Ahlgren et al., “Content, connectivity, and cloud: ingredients for the network of the future,” IEEE Communications Magazine, no. 7, pp. 62--70, 2011.
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2011 | Journal Article | LibreCat-ID: 794
M. Conti et al., “Research challenges towards the Future Internet,” Computer Communications, no. 18, pp. 2115--2134, 2011.
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2011 | Journal Article | LibreCat-ID: 1615
D. Warneke and C. Dannewitz, “Load Balancing in P2P Networks: Using Statistics to Fight Data and Execution Skew,” Journal of Advances in Information Technology, vol. 2, no. 1, 2011.
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2011 | Journal Article | LibreCat-ID: 1376
C. Dannewitz, T. Biermann, M. Dräxler, and H. Karl, “Complex Queries in P2P Networks with Resource-Constrained Devices,” Journal of Advances in Information Technology, vol. 2, no. 1, 2011.
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2010 | Journal Article | LibreCat-ID: 1831
S. Valentin and H. Karl, “Cooperative feedback to improve capacity and error rate in multiuser diversity systems - an OFDM case study,” European Transactions on Telecommunications, vol. 21, no. 8, pp. 714–724, 2010.
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2010 | Journal Article | LibreCat-ID: 805
S. Valentin and H. Karl, “Cooperative feedback to improve capacity and error rate in multiuser diversity systems - an OFDM case study,” European Transactions on Telecommunications, no. 8, pp. 714--724, 2010.
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2010 | Journal Article | LibreCat-ID: 806
H. S. Lichte, S. Valentin, and H. Karl, “Expected interference in wireless networks with geometric path loss: a closed-form approximation,” IEEE Communications Letters, no. 2, pp. 130--132, 2010.
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2010 | Journal Article | LibreCat-ID: 807
H. Simon Lichte, S. Valentin, and H. Karl, “Automated Development of Cooperative MAC Protocols - A Compiler-Assisted Approach,” Mobile Networks and Applications, no. 6, pp. 769--785, 2010.
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2009 | Journal Article | LibreCat-ID: 814
T. Biermann, M. Dräxler, and H. Karl, “Flow Synchronization for Network Coding,” Journal of Communications, no. 11, pp. 873--884, 2009.
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2009 | Journal Article | LibreCat-ID: 815
S. Valentin et al., “Cooperative Wireless Networking Beyond Store-and-Forward ,” Wireless Personal Communications, no. 1, pp. 49--68, 2009.
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2007 | Journal Article | LibreCat-ID: 830
A. Festag, H. Karl, and A. Wolisz, “Investigation of multicast-based mobility support in all-IP cellular networks,” Wireless Communications and Mobile Computing, no. 3, pp. 319--339, 2007.
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2007 | Journal Article | LibreCat-ID: 1018
S. Valentin et al., “Implementing cooperative wireless networks,” Cognitive Wireless Networks, pp. 155--178, 2007.
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2006 | Journal Article | LibreCat-ID: 837
C. Hoene, H. Karl, and A. Wolisz, “A perceptual quality model intended for adaptive VoIP applications,” Int. J. Communication Systems, no. 3, pp. 299--316, 2006.
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2006 | Journal Article | LibreCat-ID: 838
J. Gross, H.-}Florian Geerdes, H. Karl, and A. Wolisz, “Performance analysis of dynamic OFDMA systems with inband signaling,” IEEE Journal on Selected Areas in Communications, no. 3, pp. 427--436, 2006.
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2006 | Journal Article | LibreCat-ID: 839
E. Carlson, C. Prehofer, C. Bettstetter, H. Karl, and A. Wolisz, “A Distributed End-to-End Reservation Protocol for IEEE 802.11-Based Wireless Mesh Networks,” IEEE Journal on Selected Areas in Communications, no. 11, pp. 2018--2027, 2006.
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2005 | Journal Article | LibreCat-ID: 842
J.-P. Ebert, D. Hollos, H. Karl, and M. Löbbers, “Does Multi-Hop Communication Reduce Electromagnetic Exposure?,” Comput. J., no. 1, pp. 72--83, 2005.
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2005 | Journal Article | LibreCat-ID: 843
M. Savoric, H. Karl, M. Schläger, T. Poschwatta, and A. Wolisz, “Analysis and performance evaluation of the EFCM common congestion controller for TCP connections,” Computer Networks, no. 2, pp. 269--294, 2005.
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2005 | Journal Article | LibreCat-ID: 844
J. Gross, S. Valentin, H. Karl, and A. Wolisz, “A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system,” European Transactions on Telecommunications, no. 1, pp. 37--49, 2005.
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2005 | Journal Article | LibreCat-ID: 845
H. Karl, T. Lentsch, and H. Ritter, “Drahtlose Sensornetze,” Praxis der Informationsverarbeitung und Kommunikation, no. 2, pp. 66--67, 2005.
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2005 | Journal Article | LibreCat-ID: 846
A. Willig and H. Karl, “Data Transport Reliability in Wireless Sensor Networks. A Survey of Issues and Solutions,” Praxis der Informationsverarbeitung und Kommunikation, no. 2, pp. 86--92, 2005.
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2005 | Journal Article | LibreCat-ID: 1378
J. Gross, S. Valentin, H. Karl, and A. Wolisz, “A study of impact of inband signalling and realistic channel knowledge for an example dynamic OFDM-FDMA system,” European Transactions on Telecommunications, vol. 16, no. 1, pp. 37–49, 2005.
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2004 | Journal Article | LibreCat-ID: 850
J. Gross, J. Klaue, H. Karl, and A. Wolisz, “Cross-layer optimization of OFDM transmission systems for MPEG-4 video streaming,” Computer Communications, no. 11, pp. 1044--1055, 2004.
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2004 | Journal Article | LibreCat-ID: 851
N. Niebert et al., “Ambient networks: An architecture for communication networks beyond 3G,” IEEE Wireless Communications, no. 2, pp. 14--22, 2004.
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2004 | Journal Article | LibreCat-ID: 993
N. Klimin, W. Enkelmann, H. Karl, and A. Wolisz, “A hybrid approach for location-based service discovery in vehicular ad hoc networks,” Proc. of WIT, 2004.
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2004 | Journal Article | LibreCat-ID: 998
S. Mengesha, H. Karl, and A. Wolisz, “Capacity increase of multi-hop cellular wlans exploiting data rate adaptation and frequency recycling,” Proc. of MedHocNet 2004, 2004.
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2004 | Journal Article | LibreCat-ID: 1017
M. Kubisch, H. Karl, and A. Wolisz, “A MAC protocol for wireless sensor networks with multiple selectable, fixed-orientation antennas,” Frequenz, no. 3–4, pp. 92--96, 2004.
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2003 | Journal Article | LibreCat-ID: 860
M. Savoric, H. Karl, and A. Wolisz, “The TCP control block interdependence in fixed networks - new performance results,” Computer Communications, no. 4, pp. 366--375, 2003.
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2003 | Journal Article | LibreCat-ID: 861
W. Zirwas, J. Habetha, and H. Karl, “Ziel-orientierter Entwurf von Multi-hop Medienzugriffsprotokollen,” Praxis der Informationsverarbeitung und Kommunikation, no. 4, pp. 184--189, 2003.
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2003 | Journal Article | LibreCat-ID: 989
H. Karl, “An overview of energy-efficiency techniques for mobile communication systems,” Report of AG Mobikom WG7, 2003.
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2002 | Journal Article | LibreCat-ID: 1014
T. Ngo-Quynh, H. Karl, A. Wolisz, and K. Rebensburg, “New scheduling algorithm for providing proportional jitter in differentiated services network,” Proceedings of IST mobile communication and wireless telecommunications summit, Thessaloniki, Greece, 2002.
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1998 | Journal Article | LibreCat-ID: 876
H. Karl, “Bridging the gap between distributed shared memory and message passing,” Concurrency - Practice and Experience, no. 11–13, pp. 887--900, 1998.
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1998 | Journal Article | LibreCat-ID: 877
A. Baratloo, M. Karaul, H. Karl, and Z. M. Kedem, “An infrastructure for network computing with Java applets,” Concurrency -- Practice and Experience, no. 11–13, pp. 1029--1041, 1998.
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1998 | Journal Article | LibreCat-ID: 878
H. Karl, M. Werner, and L. Küttner, “Experimental investigation of message latencies in the Totem protocol in the Presence of faults,” IEEE Proceedings -- Software, no. 6, pp. 219--227, 1998.
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1997 | Journal Article | LibreCat-ID: 1445
A. Baratloo, M. Karaul, H. Karl, and Z. M. Kedem, “KnittingFactory: An Infrastructure for Distributed Web Applications,” Technical Report, 1997.
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