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347 Publications


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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2007 | Conference Paper | LibreCat-ID: 1842
H. Karl, “Optimizing sleeping intervals in preamble sampling MAC for WSNs,” 2007.
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2007 | Conference Paper | LibreCat-ID: 831
P. van der Stok et al., “WASP - Wirelessly Accessible Sensor Populations: A Project Overview,” in Constructing Ambient Intelligence - AmI 2007 Workshops Darmstadt, Germany, November 7-10, 2007 Revised Papers, 2007, pp. 426--429.
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2007 | Conference Paper | LibreCat-ID: 836
L. Marie Feeney, B. Cetin, D. Hollos, M. Kubisch, S. Mengesha, and H. Karl, “Multi-rate Relaying for Performance Improvement in IEEE 802.11 WLANs,” in Wired/Wireless Internet Communications, 5th International Conference, WWIC 2007, Coimbra, Portugal, May 23-25, 2007, Proceedings, 2007, pp. 201--212.
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2007 | Conference Paper | LibreCat-ID: 832
D. H. Woldegebreal, S. Valentin, and H. Karl, “Outage probability analysis of cooperative transmission protocols without and with network coding: inter-user channels based comparison,” in Proceedings of the 10th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2007, Chania, Crete Island, Greece, October 22-26, 2007, 2007, pp. 36--44.
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2006 | Report | LibreCat-ID: 2518
S. Valentin, H. von Malm, and H. Karl, Evaluating the GNU Software Radio platform for wireless testbeds. 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 | Conference Paper | LibreCat-ID: 840
F. Mattern, H. Karl, and K. Römer, “Wireless Sensor Networks,” in Third European Workshop, {EWSN} 2006, Zurich, Switzerland, February 13-15, 2006, Proceedings, 2006.
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2006 | Conference Paper | LibreCat-ID: 2526
C. Dannewitz, S. Berg, and H. Karl, “An IEEE 802.21-based Universal Information Service ,” in Proc. of the Wireless World Research Forum Meeting , 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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2006 | Conference Paper | LibreCat-ID: 2523
S. Valentin et al., “Cooperative wireless networking beyond store-and-forward: Perspectives for PHY and MAC design,” 2006.
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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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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 | Book | LibreCat-ID: 841
H. Karl and A. Willig, Protocols and architectures for wireless sensor networks. 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: 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 | Conference Paper | LibreCat-ID: 847
A. Kopke, H. Karl, and M. Lobbers, “Using energy where it counts: protecting important messages in the link layer,” in Wireless Sensor Networks, Second European Workshop, EWSN 2005, Istanbul, Turkey, January 31 - February 2, 2005, Proceedings, 2005, pp. 226--235.
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2005 | Conference Paper | LibreCat-ID: 1013
S. Valentin, J. Gross, H. Karl, and A. Wolisz, “Adaptive scheduling for heterogeneous traffic flows in cellular wireless OFDM-FDMA systems,” in 10th IFIP International Conference on Personal Wireless Communications/PWC’05, Comar, France, 2005, 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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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 | Book Chapter | LibreCat-ID: 848
H. Karl, “Ad Hoc Networks,” in The Industrial Information Technology Handbook, 2005, pp. 1--16.
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2005 | Conference Paper | LibreCat-ID: 1843
A. Aguiar, A. Wolisz, H. Lederer, and H. Karl, “Channel-Adaptive Schedulers with State-of-the-Art Channel Predictors,” in Proceedings of the 11th European Wireless Conference 2005, 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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2004 | Conference Paper | LibreCat-ID: 852
V. Handziski, A. Köpke, H. Karl, C. Frank, and W. Drytkiewicz, “Improving the Energy Efficiency of Directed Diffusion Using Passive Clustering,” in Wireless Sensor Networks, First European Workshop, EWSN 2004, Berlin, Germany, January 19-21, 2004, Proceedings, 2004, pp. 172--187.
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2004 | Conference Paper | LibreCat-ID: 857
D. Raguin, M. Kubisch, H. Karl, and A. Wolisz, “Queue-driven cut-through medium access in wireless ad hoc networks,” in 2004 IEEE Wireless Communications and Networking Conference , WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004, 2004, pp. 1909--1914.
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2004 | Conference Paper | LibreCat-ID: 853
V. Typpö, J. Eisl, J. Höller, R. Agüero, and H. Karl, “Research Challenges in Mobility and Moving Networks: An Ambient Networks View,” in 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, 2004, pp. 145--155.
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2004 | Book Chapter | LibreCat-ID: 858
H. Karl, “Data Transmission in Mobile Communication Systems,” in Location-Based Services, 2004, pp. 207--244.
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2004 | Conference Paper | LibreCat-ID: 992
J. Gross, I. Paoluzzi, H. Karl, and A. Wolisz, “Throughput study for a dynamic OFDM-FDMA system with inband signaling,” in Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th, 2004, pp. 1787--1791.
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2004 | Conference Paper | LibreCat-ID: 997
E. Carlson, H. Karl, A. Wolisz, and C. Prehofer, “Distributed allocation of time slots for real-time traffic in a wireless multi-hop network,” in Proc. European Wireless, Barcelona/Spain, 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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2004 | Conference Paper | LibreCat-ID: 1911
A. Aguiar, H. Karl, and A. Wolisz, “Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy,” in Proceedings of European Wireless 2004, Barcelona / Spain , 2004.
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2004 | Conference Paper | LibreCat-ID: 854
C. Frank and H. Karl, “Consistency challenges of service discovery in mobile ad hoc networks,” 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.
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2004 | Conference (Editor) | LibreCat-ID: 859
H. Karl, A. Willig, and A. Wolisz, Eds., Wireless Sensor Networks. First European Workshop, {EWSN} 2004, Berlin, Germany, January 19-21, 2004, Proceedings, 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 | Conference Paper | LibreCat-ID: 1006
J. Gross, H. Karl, and A. Wolisz, “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 | 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 | Conference Paper | LibreCat-ID: 855
L. Marie Feeney, D. Hollos, M. Kubisch, S. Mengesha, and H. Karl, “A Geometric Derivation of the Probability of Finding a Relay in Multi-rate Networks,” in 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, 2004, pp. 1312--1317.
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2004 | Conference Paper | LibreCat-ID: 1002
E. Carlson, C. Bettstetter, H. Karl, C. Prehofer, and A. Wolisz, “Distributed maintenance of resource reservation paths in multihop 802.11 networks,” in Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th, 2004, pp. 2994--2998.
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2004 | Conference Paper | LibreCat-ID: 1019
J. Gross, H. Karl, and A. Wolisz, “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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2004 | Conference Paper | LibreCat-ID: 2529
A. Köpke, H. Karl, and A. Wolisz, “Consensus in WSN – Identifying critical protocol mechanisms,” in GI / ITG Fachgespräche Drahtlose Sensornetzwerke, 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 | Conference Paper | LibreCat-ID: 856
D. Hollos, H. Karl, and A. Wolisz, “Regionalizing global optimization algorithms to improve the operation of large ad hoc networks,” in 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004, Atlanta, Georgia, USA, 21-25 March 2004, 2004, pp. 819--824.
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2004 | Conference Paper | LibreCat-ID: 988
N. Niebert, H. Flinck, R. Hancock, H. Karl, and C. Prehofer, “Ambient Networks--Research for Communication Networks Beyond 3G,” in 13th IST Mobile and Wireless Communications-Summit 2004, 2004.
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2003 | Conference Paper | LibreCat-ID: 1008
A. Neumann, X. Fu, and H. Karl, “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, pp. 24--29.
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2003 | Conference Paper | LibreCat-ID: 1914
H.-F. Geerdes and H. Karl, “The Potential of Relaying in Cellular Networks ,” in Proceedings of INOC 2003, Evry/Paris, 2003.
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2003 | Conference Paper | LibreCat-ID: 864
P. J. M. Havinga 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, pp. 198--201.
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2003 | Conference Paper | LibreCat-ID: 869
A. Festag, H. Karl, and A. Wolisz, “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, pp. 233--244.
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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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2003 | Conference Paper | LibreCat-ID: 991
J. Gross, J. Klaue, H. Karl, and A. Wolisz, “Subcarrier allocation for variable bit rate video streams in wireless OFDM systems,” in Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th, 2003, pp. 2481--2485.
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