Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2016Investigation of MPC Correlation and Angular Characteristics in the Vehicular Urban Intersection Channel Using Channel Sounding and Ray Tracing
Paschalidis, P.; Nuckelt, J.; Mahler, K.; Peter, M.; Kortke, A.; Wisotzki, M.; Keusgen, W.; Kürner, T.
Journal Article
2015Millimeter-wave channel sounding of outdoor ground reflections
Weiler, R.J.; Peter, M.; Keusgen, W.; Kortke, A.; Wisotzki, M.
Conference Paper
2014Efficient estimation and pilot-free online re-calibration of I/Q imbalance in broadband direct-conversion transmitters
Luo, J.; Kortke, A.; Keusgen, W.; Valkama, M.
Journal Article
2014Evaluation of vehicular communication performance at street intersections
Mahler, K.; Paschalidis, P.; Wisotzki, M.; Kortke, A.; Keusgen, W.
Conference Paper
2014Guardband optimization for cellular systems applying raised cosine windowed OFDM
Luo, J.; Kortke, A.; Keusgen, W.
Journal Article
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
2013Efficient joint estimation and compensation of CFO, Tx/Rx Frequency-selective I/Q imbalance, and the MIMO radio channel in OFDM systems
Luo, J.; Keusgen, W.; Kortke, A.
Journal Article
2013A highly flexible digital radio testbed and 60 GHz application examples
Keusgen, W.; Kortke, A.; Peter, M.; Weiler, R.
Conference Paper
2013A novel adaptive calibration scheme for frequency-selective I/Q imbalance in broadband direct-conversion transmitters
Luo, J.; Kortke, A.; Keusgen, W.; Valkama, M.
Journal Article
2013Realistic IEEE 802.11p transmission simulations based on channel sounder measurement data
Mahler, K.; Paschalidis, P.; Kortke, A.; Peter, M.; Keusgen, W.
Conference Paper
2012Frequency synchronization and phase offset tracking in a real-time 60-GHz CS-OFDM MIMO system
Koschel, L.; Kortke, A.
Conference Paper
2012Joint MIMO channel- and frequency-selective I/Q-imbalance estimation using a multi-functional preamble for OFDM systems
Luo, J.; Kortke, A.; Keusgen, W.
Conference Paper
2012Method for Determining Beamforming Parameters in a Wireless Communication System and to a Wireless Communication System
Keusgen, W.; Peter, M.; Kortke, A.
Patent
2012Method for spreading a plurality of data symbols onto subcarriers of a carrier signal
Keusgen, Wilhelm; Peter, Michael; Kortke, A.
Patent
2012Multi-gigabit communication with hybrid pulse shaping and fractional oversampling
Koschel, L.; Kortke, A.; Undi, F.
Conference Paper
2012Smart RF Signal Processing for Advanced Transmitters: From Theory to Practice
Jian, L.; Liszewski, J.; Schubert, B.; Keusgen, W.; Kortke, A.
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
2012Transmit beamforming for inter-operator spectrum sharing: From theory to practice
Luo, J.; Lindblom, J.; Li, J.; Mochaoura, R.; Kortke, A.; Karipidis, E.; Haardt, M.; Jorswieck, E.; Larsson, E.G.
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
2011Apparatus for Amplifying an Input-Signal
Nguyen, H.-A.; Keusgen, W.; Kortke, A.
Patent
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
2011Investigation and simulation of Car2X communication for cooperative road safety systems
Paschalidis, P.; Mahler, K.; Wisotzki, M.; Kortke, A.
Conference Paper
2011Low-complexity FPGA implementation of Volterra predistorters for power amplifiers
Liszewski, J.; Schubert, B.; Keusgen, W.; Kortke, A.
Conference Paper
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
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.
Report
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
2010Resource sharing in wireless networks: The SAPHYRE approach
Jorswieck, E.A.; Badia, L.; Fahldieck, T.; Gesbert, D.; Gustafsson, S.; Haardt, M.; Ho, K.-M.; Karipidis, E.; Kortke, A.; Larsson, E.G.; Mark, H.; Nawrocki, M.; Piesiewicz, R.; Römer, F.; Schubert, M.; Sykora, J.; Trommelen, P.; Ende, B.D. van; Zorzi, M.
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
2009Antenna diversity schemes for uplink frequency-domain multiuser detection in CP-assisted DS-CDMA systems
Luo, J.; Kortke, A.; Keusgen, W.
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
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
2009Near field scanning with optoelectronic E-field probes
Kortke, A.; Mann, W.
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 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
2008Optimization of time domain windowing and guardband size for cellular OFDM systems
Jian, L.; Keusgen, W.; Kortke, A.
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
2007High resolution equivalent source current calculation for planar antennas
Kortke, A.
Conference Paper
2007Measurement and analysis of the 60 GHz in-vehicular broadband radio channel
Peter, M.; Keusgen, W.; Kortke, A.; Schirrmacher, M.
Conference Paper
2007Temporal structure of the 60 GHz wireless channel
Peter, M.; Keusgen, W.; Kortke, A.
Conference Paper
2003Maximum directivity beam-former at 60 GHz with optical feeder
Grosskopf, G.; Eggemann, R.; Ehlers, H.; Kortke, A.; Kuhlow, B.; Przyrembel, G.; Rohde, D.; Zinal, S.
Journal Article
2002Photonic 60-GHz maximum directivity beam former for smart antennas in mobile broad-band communications
Grosskopf, G.; Eggemann, R.; Zinal, S.; Kuhlow, B.; Przyrembel, G.; Rohde, D.; Kortke, A.; Ehlers, H.
Journal Article
2000Antenna array calibration algorithms
Kortke, A.; Monich, G.
Conference Paper