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Publications (ftw. database)
Book Chapters
- Multi-user MIMO receiver processing for time-varying channels
C. Dumard, J. Jalden, T. Zemen, in Wireless Communications over Rapidly Time-Varying Channels, Eds. F. Hlawatsch and G. Matz, Academic Press, 2010, in preparation.
- Wireless Access in Vehicular Environments
L. Bernadó, K. Sjöberg, E. Uhlemann and T. Zemen, in COST2100 Book,
Section 15.6, 2010, in preparation.
- Multiuser MIMO channel equalization
C. F. Mecklenbräuker, J. Wehinger, T. Zemen, H. Artés, and F. Hlawatsch, in Smart Antennas---State of the Art, Eds. T. Kaiser, A. Bourdoux, H. Boche, J. R. Fonollosa, J. Bach Andersen, W. Utschick, Section 1.4, EURASIP Book Series on Signal Processing and Communications, New York (NY): Hindawi, 2006, pp. 53--76.
Journal Papers
- Vehicular channel characterization and its implications for wireless system design and performance
C. F. Mecklenbräuker, A. F. Molisch, J. Karedal, F. Tufvesson, A. Paier, L. Bernadó, T. Zemen, O. Klemp, N. Czink, Proceedings of IEEE, special issue on Vehicular Communications, submitted.
- On wireless links for vehicle-to-infrastructure communications
P. Belanovic, D. Valerio, A. Paier, T. Zemen, F. Ricciato, and C. Mecklenbräuker, IEEE Transactions on Vehicular Technology, vol. 59, no. 1, January 2010, pp. 269-282.
- A geometry-based stochastic MIMO model for vehicle-to-vehicle communications
J. Karedal, F. Tufvesson, N. Czink, A. Paier, C. Dumard, T. Zemen, C. F. Mecklenbräuker, and A. F. Molisch, IEEE Transactions on Wireless Communications, vol. 8, no. 7, July 2009, pp. 3646-3657.
- A time-variant MIMO channel model directly parametrised from measurements
N. Czink, T. Zemen, J. Nuutinen, J. Ylitalo, and E. Bonek, EURASIP Journal on Wireless Communications and Networking (special issue on "Advances in Propagation Modelling for Wireless Systems"), vol. 2009, doi:10.1155/2009/687238.
- Characterization of vehicle-to-vehicle radio channels from measurements at 5.2 GHz
A. Paier, J. Karedal, N. Czink, C. Dumard, T. Zemen, F. Tufvesson, A. F. Molisch, and C. F. Mecklenbräucker, Wireless Personal Communications, vol. 50, no.1, July 2009 pp. 19-32, doi:10.1007/s11277-008-9546-6.
- Low-complexity MIMO multiuser
receiver: A joint antenna detection scheme for time-varying channels
C. Dumard and T. Zemen,
IEEE Transactions on Signal Processing, vol. 56, no. 7, pp. 2931-2940, July 2008. [BIB]
- Minimum-energy
band-limited predictor with dynamic subspace selection for time-variant
flat-fading channels
T. Zemen, C. F. Mecklenbräuker, F. Kaltenberger,
and B. H. Fleury, IEEE Transactions on Signal Processing,
vol. 55, no. 9, September 2007, pp. 4534-4548. [BIB]
- Low-complexity
geometry-based MIMO channel simulation
F. Kaltenberger, T. Zemen, and C. Ueberhuber, EURASIP Journal on Advances
in Signal Processing, vol. 2007, Article ID 95281, 17 pages, 2007. doi:10.1155/2007/95281.
- Iterative
joint time-variant channel estimation and multi-user detection for MC-CDMA
T. Zemen, C. F. Mecklenbräuker, J. Wehinger, and
R. R. Müller,
IEEE Transactions on Wireless Communications, vol. 5, no. 6, June 2006,
pp. 1469-1478.
- Time-variant channel estimation
using discrete prolate spheroidal sequences
T. Zemen and C. F. Mecklenbräuker, IEEE Transactions on
Signal Processing, vol. 53, no. 9, September 2005, pp. 3597-3607.
Conference Papers, Workshop Papers and Contributions to European Research Initiatives
2010
- Complexity reduction for vehicular channel estimation using the filter-divergence measure
L. Bernadó, T. Zemen, A. Paier, and K. Karedal, in 44th Asilomar Conference on Signals, Systems and Computers, Pacific Grove (CA), USA, Nov. 7-10, 2010, to be presented.
- On the use of mismatched Wiener filtering for the characterization of non-stationary channels
A. Ispas, L. Bernadó, M. Dörpinghaus, G. Ascheid, and T. Zemen, in 44th Asilomar Conference on Signals, Systems and Computers, Pacific Grove (CA), USA, Nov. 7-10, 2010, to be presented.
- Time-, frequency-, and space-varying K-factor analysis of V2V street crossing radio channels
L. Bernadó, T. Zemen, J. Karedal, A. Paier, A. Thiel, O. Klemp, N. Czink, F. Tufvesson, A. F. Molisch and C. F. Mecklenbräuker, in 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Istanbul, Turkey, September 26-30, 2010, to be presented.
- Temporal Evolution of Channel Capacity in Vehicular MIMO Channels in the 5 GHz Band
A. Alonso, C. F. Mecklenbräuker, A. Paier, T. Zemen, N. Czink, F. Tufvesson, in XX URSI Commission B International Symposium on Electromagnetic Theory (EMT-S 2010), Berlin, Germany, August 16-19, 2010. [BIB]
- Physical Layer Simulation Results for IEEE 802.11p using Vehicular non-Stationary Channel Mode
L. Bernadó, T. Zemen, N. Czink and P. Belanovic, temporary document TD(10)11029 presented at COST 2100 Meeting, Aalborg, Denmark, June 2-4, 2010.
- Impact of fading statistics on partner selection in indoor-to-outdoor cooperative networks
P. Castiglione, S. Savazzi, M. Nicoli and T. Zemen, in IEEE International Conference on Communications (ICC), Cape Town, South Africa, May 23-27, 2010. [BIB]
- Physical layer simulation results for IEEE 802.11p using vehicular non-stationary channel model
L. Bernadó, N. Czink, T. Zemen and P. Belanovic, in IEEE International Conference on Communications (ICC) Workshop on Vehicular Connectivity, Cape Town, South Africa, May 23-27, 2010.
- Capacity evaluation of measured vehicle-to-vehicle radio channels at 5.2 GHz
A. Alonso, A. Paier, T. Zemen, N. Czink, and F. Tufvesson,
in IEEE International Conference on Communications (ICC) Workshop on Vehicular Connectivity, Cape Town, South Africa, May 23-27, 2010.
- Low-complexity geometry-based modeling of diffuse scattering
N. Czink, F. Kaltenberger, Y. Zhou, L. Bernadó, T. Zemen and X. Yin, in European Conference on Antennas and Propagation (EuCAP), Barcelona, Spain, April 12-16, 2010.
- IEEE 802.11p Transmission Using GNURadio
P. Fuxjäger, A. Costantini, D. Valerio, P. Castiglione, T. Zemen, F. Ricciato, in 6th Karlsruhe Workshop on Software Radios (WSR10), Karlsruhe, Germany, March 3-4, 2010, to be presented. Also to be presented at 2010 European Reconfigurable Radio Technologies Workshop (ERRT), Mainz, Germany, June 23-25, 2010.
- Multi-dimensional K-factor analysis for V2V radio channels in open sub-urban street crossings
L. Bernadó, T. Zemen, J. Karedal, A. Paier, A. Thiel, O. Klemp, N. Czink, F. Tufvesson, A. F. Molisch, C. F. Mecklenbräuker, temporary document TD(10)10015 presented at COST 2100 Meeting, Athens, Greece, Feb. 3-5, 2010.
2009
- Survey of
Doppler-delay characteristics of diffuse components in vehicular propagation channels
Y. Zhou, X. Yin, N. Czink, T. Zemen, F. Liu, in 2nd IEEE Conference on Wireless Access in Vehicular Environments (WAVE2009), Tongji
University, Shanghai, China, December 21-22, 2009.
- Validation of minimum-energy band-limited prediction using vehicular channel measurements
T. Zemen, S. Caban, N. Czink, and M. Rupp, temporary document (09) 943 presented at COST 2100 Meeting, Vienna, Austria, September 28-30, 2009.
- Overview of vehicle-to-vehicle radio channel measurements for collision avoidance applications
A. Paier, L. Bernadó, J. Karedal, O. Klemp, A. Kwoczek, F. Tufvesson, A. Thiel, Y. Zhou, N. Czink, T. Zemen, A. F. Molisch and C. F. Mecklenbräuker, temporary document (09) 928 presented at COST 2100 Meeting, Vienna, Austria, September 28-30, 2009.
- Impact of fading statistics on partner selection in indoor-to-outdoor cooperative networks
P. Castiglione, S. Savazzi, M. Nicoli, T. Zemen, temporary document (09) 902 presented at COST 2100 Meeting, Vienna, Austria, September 28-30, 2009.
- Parametrization of the local scattering function estimator for vehicular-to-vehicular channels
L. Bernadó, T. Zemen, A. Paier, J. Karedal, and B. H. Fleuyr, in IEEE 70th Vehicular Technology Conference (VTC2009-Fall), Anchorage, Alaska, 20–23 September 2009.
- Validation of minimum-energy band-limited prediction using vehicular channel measurements
T. Zemen, S. Caban, N. Czink, and M. Rupp, in 17th European Signal Processing Conference (EUSIPCO), Glasgow, Scotland, 24-28 August 2009.
- Measurement-based modeling of vehicle-to-vehicle MIMO channels
J. Karedal, F. Tufvesson, N. Czink, A. Paier, C. Dumard, T. Zemen, C.F. Mecklenbräuker and A. Molisch, in IEEE International Conference on Communications (ICC), Dresden, Germany, Jun. 14-18, 2009.
- Performance Degradation of a Mismatched Wiener Filter for non-WSSUS Processes
L. Bernado, T. Zemen, A. Paie and J. Karedal, temporary document (09) 858 presented at COST 2100 Meeting, Valencia, Spain, May 18-19, 2009.
- Parametrization of the local scattering function of the vehicular-to-vehicular channel using a 2D Wiener filter
L. Bernado, T. Zemen, A. Paier, J. Karedal, and B. H. Fleuyr, in NEWCOM++ - ACoRN Joint Workshop, Barcelona, March 30-April 1, 2009.
- Performance Analysis of Coded Cooperation over Time-Variant Channels
P. Castiglione, M. Nicoli, and T. Zemen, in NEWCOM++ - ACoRN Joint Workshop, Barcelona, March 30-April 1, 2009.
- Cooperative regions for coded cooperation over time-varying fading channels
P. Castiglione, M. Nicoli, S. Savazzi and T. Zemen, in International ITG/IEEE Workshop on Smart Antennas (WSA 2009), Berlin, Germany, February 16-19, 2009.
- On the characterization of MU-MIMO channels
F. Kaltenberger, L. Bernadó, and T. Zemen, in International ITG/IEEE Workshop on Smart Antennas (WSA 2009), Berlin, Germany, February 16-19, 2009.
- Spatial diversity and correlation coefficient evaluation of measured vehicle-to-vehicle radio channels at 5.2 GHz
A. Paier, T. Zemen, C. F. Mecklenbräuker, J. Karedal, N. Czink, C. Dumard, F. Tufvesson, A. F. Molisch, in IEEE Signal Processing Society 13th DSP Workshop & 5th SPE Workshop (DPSSPE), Marco Island, Florida, USA, January 4-7, 2009, invited.
2008
- On the temporal evolution of signal subspaces in vehicular MIMO channels in the 5GHz band
C. F. Mecklenbräuker, A. Paier, T. Zemen, G. Matz and A. F. Molisch, in Joint Workshop on Coding and Communications (JWCC 2008), Napa Valley, California, USA, Oct. 26-28, 2008, invited.
- Description of vehicle-to-vehicle and vehicle-to-infrastructure radio channel measurements at 5.2 GHz
A. Paier, J. Karedal, T. Zemen, N. Czink, C. Dumard, F. Tufvesson, C. F. Mecklenbräuker and A. Molisch, temporary document (08) 636 presented at COST 2100 Meeting, Lille, France, Oct. 6-8, 2008.
- Characterization of MU-MIMO channels using the spectral divergence measure
F. Kaltenberger, L, Bernadó and T. Zemen, temporary document (08)640 presented at COST 2100 Meeting, Lille, France, Oct. 6-8, 2008.
- On the temporal evolution of signal subspaces in vehicular MIMO channels in the 5 GHz band
C. F. Mecklenbräuker, A. Paier, T. Zemen, G. Matz and A. Molisch, temporary document (08)631 presented at COST 2100 Meeting, Lille, France, Oct. 6-8, 2008.
- Soft sphere decoder for an iterative receiver in time-varying MIMO channels
C. Dumard, J. Jalden and T. Zemen, in 16th European Signal Processing Conference (EUSIPCO), Lausanne, Switzerland, Aug. 25-29, 2008, invited.
- Non-WSSUS vehicular channel characterization at 5.2 GHz - spectral divergence
and time-variant coherence parameters
L. Bernado, T. Zemen, A. Paier, G. Matz, J. Karedal, N. Czink, C.
Dumard, F. Tufvesson, M. Hagenauer, A. F. Molisch, C. F. Mecklenbräuker, in XXIX General Assembly of the International Union of Radio Science (URSI), Chicago, Illinois, USA, August 7-16, 2008, invited.
- Measurement-based time-variant MIMO channel modelling using clusters
N. Czink, E. Bonek, J. Ylitalo, T. Zemen, in XXIX General Assembly of the International Union of Radio Science (URSI), Chicago, Illinois, USA, August 7-16, 2008.
- UMTS on the road: Broadcasting intelligent road safety information via MBMS
D. Valerio, F. Ricciato, P. Belanovic and T. Zemen, in 67th IEEE Vehicular Technology Conference (VTC2008-Spring), Marina Bay, Singapore, May 11–14, 2008.
- Non-WSSUS vehicular channel characterization in highway and urban scenarios at 5.2 GHz using the local scattering function
A. Paier, T. Zemen, L. Bernado, G. Matz, J. Karedal, N. Czink, C. Dumard, F. Tufvesson, and A. F. Molisch, C. F. Mecklenbräuker, in Workshop on Smart Antennas (WSA), Darmstadt, Germany, Feb. 26-27, 2008. [BIB]
- Comparison of Lund'07 vehicular channel measurements with the IEEE 802.11p channel model
A. Paier, J. Karedal, N. Czink, C. Dumard, T. Zemen, F. Tufvesson, C. Mecklenbräuker, and A.F. Molisch, temporary document (08) 436 presented at COST 2100 Meeting, Wroclaw, Poland, Feb. 6-8, 2008.
- Measurement-based time-variant channel modelling using clusters
N. Czink, E. Bonek, J. Ylitalo and T. Zemen, temporary document (08) 435 presented at COST 2100 Meeting, Wroclaw, Poland, Feb. 6-8, 2008.
2007
- An entropy based model for system-level downlink capacity requirements in V2R telematic systems
P. Belanovic and T. Zemen, in 2nd IEEE Workshop on Automotive Networking and Applications (AutoNet 2007), Washington, DC, USA, November 30, 2007.
- Cluster parameter for time-variant MIMO channel models
N. Czink, R. Tian, S. Wyne, G. Eriksson, T. Zemen, J. Ylitalo, F. Tufvesson and A. F. Molisch, in European Conference on Antennas and Propagation (EuCAP), Edingburgh, United Kingdom, November 11-16, 2007.
- Car-to-car radio channel measurements at 5 GHz: Pathloss, power delay profile, and Doppler delay spectra
A. Paier, J. Karedal, N. Czink, H. Hofstetter, C. Dumard, T. Zemen, F. Tufvesson, A. F. Molisch, C. F. Mecklenbräuker, in IEEE International Symposium on Wireless Communication Systems (ISWCS), Trondheim, Norway, October 17-19.
- Challenges in vehicular communications for impactive systems - Dynamics, Doppler, and delay
C. Mecklenbräuker, A. Paier, J. Karedal, N. Czink, H. Hofstetter, C. Dumard, T. Zemen, F. Tufvesson, A. Molisch, presented at Joint Workshop on Coding and Communications (JWCC), Dürnstein, October, 2007. (invited)
- First results from car-to-car and car-to-infrastructure radio channel measurements at 5.2GHz
A. Paier, J. Karedal, N. Czink, H. Hofstetter, C. Dumard, T. Zemen, F. Tufvesson, C. F. Mecklenbräuker, A. F. Molisch, temorary document (07) 303 presented at COST 2100 Meeting, Duisburg, Germany, Sep. 10-12, 2007.
- Tracking time-variant cluster parameters in MIMO channel measurements: Algorithm and results
N. Czink, R. Tian, S. Wyne, G. Eriksson, F. Tufvesson, T. Zemen, J. Nuutinen, J. Ylitalo, E. Bonek and A. F. Molisch, temporary document (07) 336 presented at COST 2100 Meeting, Duisburg, Germany, Sep. 10-12, 2007.
- First results from car-to-car and car-to-infrastructure radio channel measurements at 5.2GHz
A. Paier, J. Karedal, N. Czink, H. Hofstetter, C. Dumard, T. Zemen, F. Tufvesson, C. F. Mecklenbräuker, A. F. Molisch, in 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Athens, Greece, September 3-7, 2007.
- Subspace-based sphere decoder for MC-CDMA in time-varying MIMO channels
C. Dumard and T. Zemen, in 18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Athens, Greece, Sept. 3-7, 2007.
- Sphere decoder for a MIMO multi-user MC-CDMA uplink in time-varying channels
C. Dumard and T. Zemen, in IEEE International Conference on Communications (ICC), Glasgow, Scotland, United Kingdom, June 24-28, 2007.
2006
- Low-complexity
channel emulation
F. Kaltenberger, G. Steinböck, G. Humer and T.
Zemen, in European Conference on Antennas and
Propagation (EuCAP), Nice,
France, November 6-10, 2006, invited.
- Principal
component analysis of mobility data from an operational GPRS network
C. Dumard, F. Ricciato and T. Zemen,
in First International Conference on Communications and Networking in
China (CHINACOM), Beijing,
China, Oct. 25-27, 2006.
- Low-complexity joint data
detection and channel estimation in time-varying flat-fading channels
within the SAGE framework
J. Wehinger, T. Zemen, A. Kocian and B. H. Fleury, in NEWCOM-ACORN Joint Workshop (NEWCOM-ACORN),
Vienna, Austria, Sep. 20-22, 2006.
- Krylov
subspace method based low-complexity MIMO multi-user receiver for time-variant
channels
C. Dumard and T. Zemen, in 17th IEEE International Symposium on Personal,
Indoor and Mobile Radio Communications (PIMRC),
Helsinki, Finland, Sep. 11-14, 2006, best student paper award.
- Minimum-energy
bandlimited time-variant channel prediction with dynamic subspace selection
T. Zemen, C. Mecklenbräuker, B. H. Fleury,
in 14th European Signal Processing Conference (EUSIPCO), Florence, Italy, Sep. 4-8, 2006, invited.
Erratum.
- Estimators
for time-variant channels applied to UMTS-HSDPA
J. Wehinger, T. Zemen and K. Freudenthaler, in IEEE Workshop
on Signal Processing Advances in Wireless Communications (SPAWC), Cannes, France, July
2-5, 2006.
- Time-variant
channel prediction using time-concentrated and band-limited sequences
T. Zemen, C. F. Mecklenbräuker and B. H. Fleury,
in IEEE International Conference on Communications (ICC), Istanbul, Turkey, June 11-15, 2006. [BIB]
- Low-Complexity
Doubly Selective Channel Simulation Using Multidimensional Discrete
Prolate Spheroidal Sequences
F. Kaltenberger, T. Zemen and C. Ueberhuber, in 15th IST Mobile and
Wireless Communication Summit (IST
SUMMIT), Myconos, Greece, June 4-8, 2006.
- Integration
of the Krylov subspace method in an iterative multi-user detector for
time-variant channels
C. Dumard and T. Zemen, in IEEE International Conference
on Acoustics, Speech, and Signal Processing (ICASSP),
vol. IV,Toulouse, France, May 14-19, 2006, pp. 789-792.
- Time-variant
channel prediction using time-concentrated and band-limited sequences
- analytic results
T. Zemen, C. Mecklenbräuker and B. H. Fleury, in 5th Vienna Symposium in Mathematical
Modelling (MATHMOD),
Vienna, Austria, Feb. 2006, invited.
- Low complexity time-variant flat-fading channel simulation
using discrete prolate spheroidal sequences
F. Kaltenberger, T. Zemen and C. Ueberhuber, in 5th
Vienna Symposium in Mathematical Modelling (MATHMOD), Vienna, Austria, Feb.
2006, invited.
2005
- Successive Slepian subspace projection in time and frequency for time-variant channel estimation
T. Zemen, H. Hofstetter and G. Steinböck, in 14th IST Mobile and Wireless Communication Summit (IST SUMMIT), Dresden, Germany, June 19-22, 2005.
- Double Krylov subspace approximation for low complexity iterative multi-user decoding and time-variant channel estimation
C. Dumard and T. Zemen, in Sixth IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC), New York, USA, June 5- 8, 2005, pp. 346-350.
- Krylov approximation for multi-user detection with parallel interference cancellation in chip and user space
C. Dumard and T. Zemen, in Winterschool on Coding and Information Theory, Bratislava, Slovakia, February 20-25, 2005.
2004
- Iterative multi-user decoding with time-variant channel estimation for MC-CDMA
T. Zemen, C. F. Mecklenbräuker, J. Wehinger and R. R. Müller, in Fifth International Conference on 3G Mobile Communications Technologies (3G2004), London, United Kingdom, October 18-20, 2004, pp. 88-92, invited paper. [BIB]
- Subspace projection in the time and frequency domain for time-variant multi-user MIMO OFDM channel estimation
T. Zemen, H. Hofstetter, G. Steinböck, temporary document (04) 203 presented at COST 273 Meeting, Duisburg, Germany, Sep. 20-22, 2004.
- Iterative MIMO multi-user detection: Performance evaluation with COST 259 channel model
H. Hofstetter, T. Zemen, J. Wehinger and G. Steinböck, in Seventh International Symposium on Wireless Personal Multimedia Communications (WPMC), Abano Terme, Italy, Sep. 12-15, 2004, invited paper.
- Doppler diversity in MC-CDMA using the slepian basis expansion model
T. Zemen and C. F. Mecklenbräuker, in 12th European Signal Processing Conference (EUSIPCO), Vienna, Austria, Sep. 7-10, 2004. [BIB]
- On channel estimators for iterative CDMA multiuser receivers in flat Rayleigh fading
J. Wehinger, C. F. Mecklenbräuker, R. R. Müller, T. Zemen and M. Loncar, in IEEE International Conference on Communications (ICC), Paris, France, June 2004.
2003
- Improved channel estimation for iterative receivers
T. Zemen, M. Loncar, J. Wehinger, C. F. Mecklenbräuker and Ralf R. Müller, in IEEE Global Communications Conference (GLOBECOM), vol. 1, San Francisco (CA), USA, Dec. 1-5, 2003, pp. 257-261.
- Time-variant channel equalization via discrete prolate spheroidal sequences
T. Zemen and C. F. Mecklenbräuker, in 37th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove (CA), USA, Nov. 9-12, 2003, invited paper. [BIB]
- Time variant channel equalization for MC-CDMA via Fourier basis functions
T. Zemen, C. F. Mecklenbräuker and Ralf R. Müller, in MC-SS Workshop 2003, Oberpaffenhofen, Germany, Sep. 17-19, 2003, pp. 451-458.
- Iterative detection and channel estimation for MC-CDMA
T. Zemen, J. Wehinger, C. F. Mecklenbräuker and Ralf R. Müller, in IEEE International Conference on Communications (ICC), vol.5, Anchorage (Alaska), May 2003, pp. 3462-3466.
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