Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2013An efficient frame aggregation and block-ACK scheme for 60 GHz short-range point-to-point transmission
Luo, J.; Kortke, A.; Keusgen, W.
Journal Article
20122-antenna RF front-end for cognitive radio
Liszewski, J.; Gäbler, H.; Keusgen, W.; Haustein, T.
Conference Paper
2012Analyzing human body shadowing at 60 GHz. Systematic wideband MIMO measurements and modeling approaches
Peter, M.; Wisotzki, M.; Raceala-Motoc, M.; Keusgen, W.; Felbecker, R.; Jacob, M.; Priebe, S.; Kürner, T.
Conference Paper
2012Electromagnetic wave propagation in the millimeter wave band using the NVIDIA OptiX GPU ray tracing engine
Felbecker, R.; Raschkowski, L.; Keusgen, W.; Peter, M.
Conference Paper
2012Statistical evaluation of multipath component lifetime in the car-to-car channel at urban street intersections based on geometrical tracking
Paschalidis, P.; Mahler, K.; Kortke, A.; Peter, M.; Keusgen, W.
Conference Paper
20112 X 2 MIMO Measurements of the Wideband Car-to-Car Channel at 5.7 GHz on Urban Street Intersections
Paschalidis, P.; Mahler, K.; Kortke, A.; Wisotzki, M.; Peter, M.; Keusgen, W.
Conference Paper
201160 GHz short-range communications: Channel measurements, analysis, and modeling
Garcia Ariza, A.P.; Trautwein, U.; Müller, R.; Wollenschläger, F.; Thomä, R.S.; Kunisch, J.; Torre, I. de la; Felbecker, R.; Peter, M.; Keusgen, W.
Journal Article
201160 GHz WLAN applications and implementation aspects
Schulte, B.; Peter, M.; Felbecker, R.; Keusgen, W.; Steffen, R.; Schumacher, H.; Hellfeld, M.; Barghouthi, A.; Krone, S.; Guderian, F.; Fettweis, G.P.; Ziegler, V.
Journal Article
2011Apparatus for Amplifying an Input-Signal
Nguyen, H.-A.; Keusgen, W.; Kortke, A.
Patent
2011Estimation of permitivitty and loss tangent of high frequency materials in the millimeter wave band using a hemispherical open resonator
Felbecker, R.; Keusgen, W.; Peter, M.
Conference Paper
2011A flexible Hardware-In-the-Loop test platform for physical resource sharing mechanisms in wireless networks
Luo, J.; Kortke, A.; Keusgen, W.; Li, J.; Haardt, M.; Prochazka, P.; Sykora, J.
Conference Paper
2011Low-complexity FPGA implementation of Volterra predistorters for power amplifiers
Liszewski, J.; Schubert, B.; Keusgen, W.; Kortke, A.
Conference Paper
2011Method for Determining Beamforming Parameters in a Wireless Communication System and to a Wireless Communication System
Keusgen, W.; Peter, M.; Kortke, A.
Patent
2011An NLOS-capable 60 GHz MIMO demonstrator: System concept & performance
Keusgen, W.; Kortke, A.; Koschel, L.; Peter, M.; Weiler, R.; Zirath, H.; Gavell, M.; He, Z.
Conference Paper
2011Pathloss and multipath power decay of the wideband car-to-car channel at 5.7 GHz
Paschalidis, P.; Mahler, K.; Kortke, A.; Peter, M.; Keusgen, W.
Conference Paper
2011Physical layer design, link budget analysis, and digital baseband implementation for 60 GHz short-range applications
Krone, S.; Guderian, F.; Fettweis, G.; Petri, M.; Piz, M.; Marinkovic, M.; Peter, M.; Felbecker, R.; Keusgen, W.
Journal Article
2011Preamble Based Joint CFO, Frequency-Selective I/Q-Imbalance and Channel Estimation and Compensation in MIMO OFDM Systems
Luo, J.; Keusgen, W.; Kortke, A.
Conference Paper
2011Verbundvorhaben EASY-A: Enablers for Ambient Services & Systems - 60 GHz Broadband Links
Keusgen, W.; Peter, M.; Felbecker, R.; Kortke, A.; Luo, J.; Koschel, L.
Research Report
2010Energiebedarf und Energieeffizienz der Kommunikationstechnik
Keusgen, W.
Journal Article
2010Modeling and simulation of small-scale fading for vehicle-to-vehicle communication
Mahler, K.; Paschalidis, P.; Kortke, A.; Keusgen, W.
Conference Paper
2010No-go theorem for linear systems on bounded bandlimited signals
Boche, H.; Monich, U.J.; Kortke, A.; Keusgen, W.
Journal Article
2010Preamble designs for efficient joint channel and frequency-selective I/Q-imbalance compensation in MIMO OFDM systems
Luo, J.; Keusgen, W.; Kortke, A.
Conference Paper
2010Semi-blind iterative joint estimation of frequency selective I/Q-imbalance and modulator offset error in direct-conversion transmitters
Luo, J.; Kortke, A.; Keusgen, W.
Conference Paper
2010Statistical evaluation and modeling of the wideband car-to-car channel at 5.7 GHz
Paschalidis, P.; Mahler, K.; Kortke, A.; Peter, M.; Wisotzki, M.; Keusgen, W.
Conference Paper
2010Throughput maximization of a hybrid dynamic frame aggregation and block-ACK scheme for 60 GHz high speed communications
Luo, J.; Kortke, A.; Keusgen, W.
Conference Paper
200960 GHz broadband wireless transmission experiments in a NLOS indoor environment
Jian, L.; Kortke, A.; Keusgen, W.; Peter, M.
Conference Paper
2009Analysis and comparison of indoor wideband radio channels at 5 and 60 GHz
Peter, M.; Keusgen, W.
Conference Paper
2009Antenna diversity schemes for uplink frequency-domain multiuser detection in CP-assisted DS-CDMA systems
Luo, J.; Kortke, A.; Keusgen, W.
Conference Paper
2009Design of a 60 GHz transceiver module with integrated antenna
Keusgen, W.; Subramanian, V.; Bock, G.
Conference Paper
2009Efficient self-calibration of frequency-dependent I/Q-imbalance in direct-conversion OFDM transceivers
Jian, L.; Kortke, A.; Keusgen, W.
Conference Paper
2009Estimation of effective permittivity and effective thickness of inhomogeneous materials at 52-70 GHz
Felbecker, R.; Keusgen, W.; Kortke, A.; Peter, M.
Conference Paper
2009Identification of the Volterra kernels of nonlinear power amplifiers
Schubert, B.; Liszewski, J.; Keusgen, W.
Conference Paper
2009Joint calibration of frequency selective time variant I/Q-imbalance and modulator DC-offset error in broadband direct-conversion transmitters
Jian, L.; Kortke, A.; Keusgen, W.
Conference Paper
2009Measurement-based investigation of 60 GHz broadband transmission for wireless in-car communication
Peter, M.; Felbecker, R.; Keusgen, W.; Hillebrand, J.
Conference Paper
2009Wideband car-to-car MIMO radio channel measurements at 5.7 GHz in typical communication scenarios
Paschalidis, P.; Kortke, A.; Mahler, K.; Peter, M.; Wisotzki, M.; Keusgen, W.
Conference Paper
2008A 60 GHz SiGe HBT chip set
Böck, G.; Subramanian, V.; Keusgen, W.; Do, V.H.
Conference Paper
200860 GHz SiGe HBT chip set for high speed wireless communication systems
Subramanian, V.; Keusgen, W.; Hoeang, D. van; Böck, G.
Conference Paper
2008A 60 GHz SiGe-HBT power amplifier with 20% PAE at 15 dBm output power
Do, V.H.; Subramanian, V.; Keusgen, W.; Böck, G.
Journal Article
2008A design concept for a 60 GHz wireless in-flight entertainment system
Jian, L.; Keusgen, W.; Kortke, A.; Peter, M.
Conference Paper
2008Efficient channel estimation schemes for MIMO OFDM systems with NULL subcarriers
Jian, L.; Kortke, A.; Keusgen, W.
Conference Paper
2008Impact of Antenna Configuration and Shadowing on the Characteristics of the 60 GHz Indoor Wideband Channel
Peter, M.; Keusgen, W.
Conference Paper
2008Incabin millimeter wave propagation simulation in a wide-bodied aircraft using ray-tracing
Felbecker, R.; Keusgen, W.; Peter, M.
Conference Paper
2008Kleine Wellen ganz groß
Peter, M.; Keusgen, W.; Böck, G.
Journal Article
2008Layout design considerations for 60 GHZ siGe power amplifiers
Subramanian, V.; Hamidian, A.; Keusgen, W.; Do, V.-H.; Boeck, G.
Conference Paper
2008Optimization of time domain windowing and guardband size for cellular OFDM systems
Jian, L.; Keusgen, W.; Kortke, A.
Conference Paper
2008Ray-tracing simulations of the 60 GHz in-cabin radio channel
Felbecker, R.; Keusgen, W.; Peter, M.
Conference Paper
2008A survey on 60 GHz broadband communication: Capability, applications and system design
Peter, M.; Keusgen, W.; Jian, L.
Conference Paper
2008A wideband channel sounder for car-to-car radio channel measurements at 5.7 GHz and results for an urban scenario
Paschalidis, P.; Wisotzki, M.; Kortke, A.; Keusgen, W.; Peter, M.
Conference Paper
2007A 60 GHz monolithic upconversion mixer in SiGe HBT technology
Do, V.-H.; Subramanian, V.; Keusgen, W.; Boeck, G.
Conference Paper
200760 GHz SiGe HBT downconversion mixer
Subramanian, V.; Do, V.-H.; Keusgen, W.; Boeck, G.
Conference Paper
2007A component-based time domain wideband channel sounder and measurement results for the 60 GHz in-cabin radio channel
Peter, M.; Keusgen, W.
Conference Paper
2007Design and optimization of a high efficiency 60 GHz SiGe-HBT power amplifier
Do, V.-H.; Subramanian, V.; Keusgen, W.; Boeck, G.
Conference Paper
2007Evaluation of multiple antenna configurations
Keusgen, W.
Conference Paper
2007Evaluation of multiple antenna configurations
Keusgen, W.
Conference Paper
2007Impact of array configuration on channel- and noise-covariance in multiple antenna systems
Keusgen, W.
Conference Paper
2007Measurement and analysis of the 60 GHz in-vehicular broadband radio channel
Peter, M.; Keusgen, W.; Kortke, A.; Schirrmacher, M.
Conference Paper
2007Measurement and ray-tracing simulation of the 60 GHz indoor broadband channel
Peter, M.; Keusgen, W.; Felbecker, R.
Conference Paper
2007Measurement and ray-tracing simulation of the 60 GHz indoor broadband channel: model accuracy and parameterization
Peter, W.K.M.; Keusgen, W.; Felbecker, R.
Conference Paper
2007Temporal structure of the 60 GHz wireless channel
Peter, M.; Keusgen, W.; Kortke, A.
Conference Paper
20061.25 Gbit/s indoor radio link extension of a Gigabit Ethernet CWDM access network
Grosskopf, G.; Habel, K.; Keusgen, W.; Rohde, D.; Langer, K.D.
Conference Paper
2006Breitbandige Zugangs- und Inhaus-Netzarchitekturen (BaiNet)
Langer, K.D.; Vathke, J.; Keusgen, W.
Research Report
2006Evaluation of MIMO systems with respect to front-end imperfections
Degen, C.; Koch, O.; Keusgen, W.; Rembold, B.
Conference Paper, Journal Article
2006SABA - A testbed for a real-time MIMO system
Borkowski, D.; Brühl, L.; Degen, C.; Keusgen, W.; Alirezaei, G.; Geschewski, F.; Oikonomopoulos, C.; Rembold, B.
Journal Article