Torbjörn Ekman
Om
Nils Torbjørn Ekman (1969) er professor ved Institutt for elektronikk og telekommunikasjon. Han er utdannet sivilingeniør i teknisk fysikk ved Universitetet i Uppsala. Han har også en lisensiatgrad og en doktorgrad i signalbehandling fra samme universitet.
Publikasjoner
2023
-
Quintana Diaz, Gara;
Ekman, Torbjörn;
Camanzo, Alejandro;
Birkeland, Roger;
Lago, José Miguel;
Muíño, Alberto González.
(2023)
Satellite uplink interference measurements in the 437 MHz UHF amateur radio band onboard LUME-1.
Acta Astronautica
Vitenskapelig artikkel
2022
-
Quintana DÃaz, Gara;
Birkeland, Roger;
Løge, Lars;
Andersen, Even;
Bolstad, Anton;
Ekman, Torbjörn.
(2022)
In-orbit Interference Measurements and Analysis in the
VDES-band with the NorSat-2 Satellite.
IEEE Aerospace Conference. Proceedings
Vitenskapelig artikkel
-
Birkeland, Roger;
Quintana DÃaz, Gara;
Honoré-Livermore, Evelyn;
Ekman, Torbjörn;
Agelet, Fernando Aguado;
Johansen, Tor Arne.
(2022)
Development of a multi-purpose SDR payload for the
HYPSO-2 satellite.
IEEE Aerospace Conference. Proceedings
Vitenskapelig artikkel
-
Abraham, Jens;
Ramírez-Espinosa, Pablo;
Ekman, Torbjörn.
(2022)
Statistics of the Effective Massive MIMO Channel in Correlated Rician Fading.
IEEE Open Journal of Antennas and Propagation
Vitenskapelig artikkel
2021
-
Quintana Díaz, Gara;
Ekman, Torbjörn;
Lago Agra, José Miguel;
Hurtado de Mendoza, Diego;
González Muíño, Alberto;
Agelet, Fernando Aguado.
(2021)
In-orbit measurements and analysis of radio interference in the UHF amateur radio band from the LUME-1 satellite.
Remote Sensing
Vitenskapelig artikkel
-
Quintana-Diaz, Gara;
Nodar-López, Diego;
González Muíño, Alberto;
Aguado Agelet, Fernando;
Cappelletti, Chantal;
Ekman, Torbjörn.
(2021)
Detection of radio interference in the UHF amateur radio band with the Serpens satellite.
Advances in Space Research
Vitenskapelig artikkel
2019
-
Ghiaasi , Golsa;
Abraham, Jens;
Eide, Egil;
Ekman, Torbjörn.
(2019)
Effective Channel Hardening in an Indoor Multiband Scenario.
International Journal of Wireless Information Networks
Vitenskapelig artikkel
-
Yang, Kun;
Molisch, Andreas F.;
Ekman, Torbjörn;
Røste, Terje;
Berbineau, Marion.
(2019)
A Round Earth Loss Model and Small-Scale Channel Properties for Open-Sea Radio Propagation.
IEEE Transactions on Vehicular Technology
Vitenskapelig artikkel
-
Yang, Kun;
Zhou, Ning;
Røste, Terje;
Yu, Junyi;
Li, Fang;
Chen, Wei.
(2019)
High-speed Vehicle-to-Vehicle Radio Channel Characteristics for Suburban and Municipal Lake Region at 5.9 GHz.
IEEE (Institute of Electrical and Electronics Engineers)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2016
-
Lundheim, Lars Magne;
Ekman, Torbjörn;
Gajic, Bojana;
Larsen, Bjørn B.;
Tybell, Per Thomas Martin.
(2016)
Early Innovation Projects: First Experiences from the Electronic Engineering Ladder at NTNU.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Larsen, Bjørn B.;
Lundheim, Lars Magne;
Ekman, Torbjörn;
Tybell, Per Thomas Martin.
(2016)
Teaching Freshmen Engineering Communication.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Kansanen, Kimmo Juhani;
Ekman, Torbjörn.
(2016)
Performance Analysis of Energy Detection for MIMO Decision Fusion in Wireless Sensor Networks over Arbitrary Fading Channels.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
2015
-
Ekman, Torbjörn.
(2015)
An fir predictor interpretation of LS estimation of sinusoidal amplitudes followed by extrapolation.
European Signal Processing Conference
Vitenskapelig artikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Kansanen, Kimmo;
Ekman, Torbjörn.
(2015)
On Energy Detection for MIMO Decision Fusion in Wireless Sensor Networks over NLOS Fading.
IEEE Communications Letters
Vitenskapelig artikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Ekman, Torbjörn.
(2015)
HMM-Based Decision Fusion in Wireless Sensor Networks with Noncoherent Multiple Access.
IEEE Communications Letters
Vitenskapelig artikkel
-
Askeland, Stein-Arne;
Ekman, Torbjörn.
(2015)
Tracking with a high-resolution 2-D spectral estimation based automotive radar.
IEEE transactions on intelligent transportation systems (Print)
Vitenskapelig artikkel
-
Cella, Tommaso;
Ekman, Torbjörn.
(2015)
High Capacity and High Coverage mm-Wave Multi-Antenna Systems.
Doktoravhandlinger ved NTNU (2015/225)
Doktorgradsavhandling
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Ekman, Torbjörn;
Dong, Hefeng.
(2015)
Energy Detection for MIMO Decision Fusion in Underwater Sensor Networks.
IEEE Sensors Journal
Vitenskapelig artikkel
2014
-
Askeland, Stein-Arne;
Ekman, Torbjörn.
(2014)
2D spectral estimation for unambiguous detection of automotive radar targets.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Cella, Tommaso;
Orten, Pål;
Ekman, Torbjörn.
(2014)
MM-WAVE SHORT RANGE OUTDOOR LINKS WITH PHASED ARRAYS.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Cella, Tommaso;
Orten, Pål;
Ekman, Torbjörn.
(2014)
Design of a practical and compact mm-wave MIMO system with optimized capacity and phased arrays.
International Journal of Antennas and Propagation
Vitenskapelig artikkel
2013
-
Askeland, Stein-Arne;
Ekman, Torbjörn.
(2013)
Interpolated Root-Music for transversal automotive radar traffic monitoring.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yang, Kun;
Molisch, Andreas F.;
Ekman, Torbjörn;
Røste, Terje.
(2013)
A Deterministic Round Earth Loss Model for Open-Sea Radio Propagation.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn.
(2013)
Practical Multiuser MIMO Beamforming using the Strongest Eigenmodes.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Godana, Bruhtesfa;
Ekman, Torbjörn.
(2013)
Rotative Quantization Using Adaptive Range for Temporally Correlated MIMO Channels.
IEEE Sarnoff Symposium
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Cella, Tommaso;
Orten, Pål;
Ekman, Torbjörn.
(2013)
Wireless access using MIMO subarrays at mm-wave bands.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Godana, Bruhtesfa;
Ekman, Torbjörn.
(2013)
Parametrization Based Limited Feedback Design for Correlated MIMO Channels Using New Statistical Models.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
-
Godana, Bruhtesfa;
Ekman, Torbjörn;
Kansanen, Kimmo.
(2013)
Partial Equivalent Channel Inversion Based Precoding with Mode Adaptation in Multiuser MIMO Systems.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
2012
-
Flåm, John Torjus;
Chatterjee, Saikat;
Kansanen, Kimmo;
Ekman, Torbjörn.
(2012)
On MMSE estimation: A Linear Model under Gaussian Mixture Statistics.
IEEE Transactions on Signal Processing
Vitenskapelig artikkel
-
Vijayandran, Luxmiram;
Dharmawansa, Prathapasinghe;
Ekman, Torbjörn;
Tellambura, Chinthananda.
(2012)
Analysis of Aggregate Interference and Primary System Performance in Finite Area Cognitive Radio Networks.
IEEE Transactions on Communications
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2012)
Rayleigh Scattering Cluster Based Spatial-Temporal-Spectral Correlation Properties with MIMO-OFDM Channel Model.
IEEE Vehicular Technology Conference (VTC)
Vitenskapelig artikkel
-
Vijayandran, Luxmiram;
Byun, Sang-Soon;
Øien, Geir Egil;
Ekman, Torbjörn.
(2012)
Increasing sum-rate in large-scale cognitive radio networks by centralized power and spectrum allocation.
EURASIP Journal on Wireless Communications and Networking
Vitenskapelig artikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn;
Tesfamicael, Solomon Abedom.
(2012)
Block Diagonal Inversion Precoding for MIMO Broadcast Channels.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2012)
Experimental multipath delay profile of mobile radio channels over sea at 2 GHz.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2011
-
Li, Xin;
Ekman, Torbjörn.
(2011)
Gaussian Angular Distributed MIMO Channel Model.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn.
(2011)
A reduced quantization range feedback method for time-varying MIMO systems.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Vijayandran, Luxmiram;
Kansanen, Kimmo;
Brandt-Pearce, Maïté;
Ekman, Torbjörn.
(2011)
Energy efficient state estimation through stochastic optimization.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn.
(2011)
Linear prediction of time-varying MIMO systems using Givens rotations.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Vijayandran, Luxmiram;
Brandt-Pearce, Maite;
Kansanen, Kimmo;
Ekman, Torbjörn.
(2011)
Efficient State Estimation with Energy Harvesting and Fairness Control Using Stochastic Optimization.
GLOBECOM - conference record / IEEE Global Telecommunications Conference
Vitenskapelig artikkel
-
Vijayandran, Luxmiram;
Dharmawansa, Prathapasinghe;
Ekman, Torbjörn;
Tellambura, Chinthananda.
(2011)
Aggregate Interference and System Performance in Finite Area Cognitive Radio Networks.
IEEE Sarnoff Symposium
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2010
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy Angular Distribution for Clustered Radio Propagation SIMO Channel Model.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model.
IEEE Vehicular Technology Conference (VTC)
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy angular distribution for clustered radio propagation SIMO channel model.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Channel characterization including path loss and Doppler effects with sea reflections of mobile radio propagation over sea at 2 GHz.
IEEE Signal Processing Society
Annet
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model.
IEEE Press
Annet
-
Cheffena, Michael;
Bråten, Lars Erling;
Ekman, Torbjörn;
Tjelta, Terje.
(2010)
Combined Dynamic Channel Simulator for High Capacity Broadband Fixed Wireless Access Systems.
IEEE Transactions on Antennas and Propagation
Vitenskapelig artikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Channel characterization of mobile radio channel over sea at 2 GHz.
Annet
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Land-to-ship radio channel measurements over sea at 2 GHz.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Land-to-ship radio channel measurements over sea at 2 GHz.
IEEE Wireless Communications and Networking Conference
Vitenskapelig artikkel
2009
-
Cheffena, Michael;
Bråten, Lars Erling;
Ekman, Torbjörn.
(2009)
On the Space-Time Variations of Rain Attenuation.
IEEE Transactions on Antennas and Propagation
Vitenskapelig artikkel
-
Cheffena, Michael;
Ekman, Torbjörn.
(2009)
Dynamic Model of Signal Fading due to Swaying Vegetation.
EURASIP Journal on Wireless Communications and Networking
Vitenskapelig artikkel
-
Cheffena, Michael;
Ekman, Torbjörn.
(2009)
Dynamic Model of Signal Fading due to Swaying Vegetation.
EURASIP Journal on Wireless Communications and Networking
Vitenskapelig artikkel
-
Cheffena, Michael;
Bråten, Lars Erling;
Ekman, Torbjörn.
(2009)
On the Space-Time Variations of Rain Attenuation.
IEEE Transactions on Antennas and Propagation
Vitenskapelig artikkel
2008
-
Son, Le Thanh;
Ekman, Torbjörn;
Orten, Pål.
(2008)
Cross-Layer Random Access and Channel Assignment for Uplink Broadband Wireless System.
IEEE conference proceedings
IEEE conference proceedings
Vitenskapelig antologi/Konferanseserie
-
Son, Le Thanh;
Ekman, Torbjörn;
Orten, Pål.
(2008)
Iterative Two-Layer CI Phase Coding Enhancement of Uplink Broadband Wireless Access System.
IEEE conference proceedings
IEEE Vehicular Technology Conference (VTC) (10.1109/VETECF.2008.407)
Vitenskapelig antologi/Konferanseserie
-
Cheffena, Michael;
Ekman, Torbjörn.
(2008)
Modeling the Dynamic Effects of Vegetation on Radiowave Propagation.
IEEE conference proceedings
IEEE International Conference on Communications (10.1109/ICC.2008.838 )
Vitenskapelig antologi/Konferanseserie
-
Son, Le Thanh;
Ekman, Torbjörn;
Orten, Pål.
(2008)
Two-Layer CI Phase Coding Interference Cancellation and Detection of Uplink Broadband Wireless Access System.
IEEE conference proceedings
IEEE conference proceedings
Vitenskapelig antologi/Konferanseserie
-
Mercier, Bertrand;
Fodor, Viktoria;
Thobaben, Ragnar;
Skoglund, Mikael;
Koivunen, Visa;
Lindfors, Saska.
(2008)
Sensor networks for cognitive radio: Theory and system design.
International Information Management Corporation Limited
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bang, HJ;
Ekman, Torbjörn;
Ekman, Torbjörn;
Gesbert, D.
(2008)
Channel predictive proportional fair scheduling.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
2007
-
Bang, Hans Jørgen;
Ekman, Torbjörn.
(2007)
Opportunistic Round Robin with Extended Window for Time Correlated Channels.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Chen, Ming;
Ekman, Torbjörn;
Viberg, Mats.
(2007)
New Approaches for Channel Prediction Based on Sinusoidal Modeling.
EURASIP Journal on Advances in Signal Processing
Vitenskapelig artikkel
2006
-
Cheffena, Michael;
Bråten, Lars Erling;
Tjelta, Terje;
Ekman, Torbjörn.
(2006)
Space-time dynamic channel model for broadband fixed wireless access.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Tidsskriftspublikasjoner
-
Quintana Diaz, Gara;
Ekman, Torbjörn;
Camanzo, Alejandro;
Birkeland, Roger;
Lago, José Miguel;
Muíño, Alberto González.
(2023)
Satellite uplink interference measurements in the 437 MHz UHF amateur radio band onboard LUME-1.
Acta Astronautica
Vitenskapelig artikkel
-
Quintana DÃaz, Gara;
Birkeland, Roger;
Løge, Lars;
Andersen, Even;
Bolstad, Anton;
Ekman, Torbjörn.
(2022)
In-orbit Interference Measurements and Analysis in the
VDES-band with the NorSat-2 Satellite.
IEEE Aerospace Conference. Proceedings
Vitenskapelig artikkel
-
Birkeland, Roger;
Quintana DÃaz, Gara;
Honoré-Livermore, Evelyn;
Ekman, Torbjörn;
Agelet, Fernando Aguado;
Johansen, Tor Arne.
(2022)
Development of a multi-purpose SDR payload for the
HYPSO-2 satellite.
IEEE Aerospace Conference. Proceedings
Vitenskapelig artikkel
-
Abraham, Jens;
Ramírez-Espinosa, Pablo;
Ekman, Torbjörn.
(2022)
Statistics of the Effective Massive MIMO Channel in Correlated Rician Fading.
IEEE Open Journal of Antennas and Propagation
Vitenskapelig artikkel
-
Quintana Díaz, Gara;
Ekman, Torbjörn;
Lago Agra, José Miguel;
Hurtado de Mendoza, Diego;
González Muíño, Alberto;
Agelet, Fernando Aguado.
(2021)
In-orbit measurements and analysis of radio interference in the UHF amateur radio band from the LUME-1 satellite.
Remote Sensing
Vitenskapelig artikkel
-
Quintana-Diaz, Gara;
Nodar-López, Diego;
González Muíño, Alberto;
Aguado Agelet, Fernando;
Cappelletti, Chantal;
Ekman, Torbjörn.
(2021)
Detection of radio interference in the UHF amateur radio band with the Serpens satellite.
Advances in Space Research
Vitenskapelig artikkel
-
Ghiaasi , Golsa;
Abraham, Jens;
Eide, Egil;
Ekman, Torbjörn.
(2019)
Effective Channel Hardening in an Indoor Multiband Scenario.
International Journal of Wireless Information Networks
Vitenskapelig artikkel
-
Yang, Kun;
Molisch, Andreas F.;
Ekman, Torbjörn;
Røste, Terje;
Berbineau, Marion.
(2019)
A Round Earth Loss Model and Small-Scale Channel Properties for Open-Sea Radio Propagation.
IEEE Transactions on Vehicular Technology
Vitenskapelig artikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Kansanen, Kimmo Juhani;
Ekman, Torbjörn.
(2016)
Performance Analysis of Energy Detection for MIMO Decision Fusion in Wireless Sensor Networks over Arbitrary Fading Channels.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
-
Ekman, Torbjörn.
(2015)
An fir predictor interpretation of LS estimation of sinusoidal amplitudes followed by extrapolation.
European Signal Processing Conference
Vitenskapelig artikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Kansanen, Kimmo;
Ekman, Torbjörn.
(2015)
On Energy Detection for MIMO Decision Fusion in Wireless Sensor Networks over NLOS Fading.
IEEE Communications Letters
Vitenskapelig artikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Ekman, Torbjörn.
(2015)
HMM-Based Decision Fusion in Wireless Sensor Networks with Noncoherent Multiple Access.
IEEE Communications Letters
Vitenskapelig artikkel
-
Askeland, Stein-Arne;
Ekman, Torbjörn.
(2015)
Tracking with a high-resolution 2-D spectral estimation based automotive radar.
IEEE transactions on intelligent transportation systems (Print)
Vitenskapelig artikkel
-
Salvo Rossi, Pierluigi;
Ciuonzo, Domenico;
Ekman, Torbjörn;
Dong, Hefeng.
(2015)
Energy Detection for MIMO Decision Fusion in Underwater Sensor Networks.
IEEE Sensors Journal
Vitenskapelig artikkel
-
Cella, Tommaso;
Orten, Pål;
Ekman, Torbjörn.
(2014)
Design of a practical and compact mm-wave MIMO system with optimized capacity and phased arrays.
International Journal of Antennas and Propagation
Vitenskapelig artikkel
-
Yang, Kun;
Molisch, Andreas F.;
Ekman, Torbjörn;
Røste, Terje.
(2013)
A Deterministic Round Earth Loss Model for Open-Sea Radio Propagation.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn.
(2013)
Practical Multiuser MIMO Beamforming using the Strongest Eigenmodes.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Godana, Bruhtesfa;
Ekman, Torbjörn.
(2013)
Parametrization Based Limited Feedback Design for Correlated MIMO Channels Using New Statistical Models.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
-
Godana, Bruhtesfa;
Ekman, Torbjörn;
Kansanen, Kimmo.
(2013)
Partial Equivalent Channel Inversion Based Precoding with Mode Adaptation in Multiuser MIMO Systems.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
-
Flåm, John Torjus;
Chatterjee, Saikat;
Kansanen, Kimmo;
Ekman, Torbjörn.
(2012)
On MMSE estimation: A Linear Model under Gaussian Mixture Statistics.
IEEE Transactions on Signal Processing
Vitenskapelig artikkel
-
Vijayandran, Luxmiram;
Dharmawansa, Prathapasinghe;
Ekman, Torbjörn;
Tellambura, Chinthananda.
(2012)
Analysis of Aggregate Interference and Primary System Performance in Finite Area Cognitive Radio Networks.
IEEE Transactions on Communications
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2012)
Rayleigh Scattering Cluster Based Spatial-Temporal-Spectral Correlation Properties with MIMO-OFDM Channel Model.
IEEE Vehicular Technology Conference (VTC)
Vitenskapelig artikkel
-
Vijayandran, Luxmiram;
Byun, Sang-Soon;
Øien, Geir Egil;
Ekman, Torbjörn.
(2012)
Increasing sum-rate in large-scale cognitive radio networks by centralized power and spectrum allocation.
EURASIP Journal on Wireless Communications and Networking
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2011)
Gaussian Angular Distributed MIMO Channel Model.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Vijayandran, Luxmiram;
Brandt-Pearce, Maite;
Kansanen, Kimmo;
Ekman, Torbjörn.
(2011)
Efficient State Estimation with Energy Harvesting and Fairness Control Using Stochastic Optimization.
GLOBECOM - conference record / IEEE Global Telecommunications Conference
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy Angular Distribution for Clustered Radio Propagation SIMO Channel Model.
IEEE Vehicular Technology Conference (VTC) Proceedings
Vitenskapelig artikkel
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model.
IEEE Vehicular Technology Conference (VTC)
Vitenskapelig artikkel
-
Cheffena, Michael;
Bråten, Lars Erling;
Ekman, Torbjörn;
Tjelta, Terje.
(2010)
Combined Dynamic Channel Simulator for High Capacity Broadband Fixed Wireless Access Systems.
IEEE Transactions on Antennas and Propagation
Vitenskapelig artikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Land-to-ship radio channel measurements over sea at 2 GHz.
IEEE Wireless Communications and Networking Conference
Vitenskapelig artikkel
-
Cheffena, Michael;
Bråten, Lars Erling;
Ekman, Torbjörn.
(2009)
On the Space-Time Variations of Rain Attenuation.
IEEE Transactions on Antennas and Propagation
Vitenskapelig artikkel
-
Cheffena, Michael;
Ekman, Torbjörn.
(2009)
Dynamic Model of Signal Fading due to Swaying Vegetation.
EURASIP Journal on Wireless Communications and Networking
Vitenskapelig artikkel
-
Cheffena, Michael;
Ekman, Torbjörn.
(2009)
Dynamic Model of Signal Fading due to Swaying Vegetation.
EURASIP Journal on Wireless Communications and Networking
Vitenskapelig artikkel
-
Cheffena, Michael;
Bråten, Lars Erling;
Ekman, Torbjörn.
(2009)
On the Space-Time Variations of Rain Attenuation.
IEEE Transactions on Antennas and Propagation
Vitenskapelig artikkel
-
Bang, HJ;
Ekman, Torbjörn;
Ekman, Torbjörn;
Gesbert, D.
(2008)
Channel predictive proportional fair scheduling.
IEEE Transactions on Wireless Communications
Vitenskapelig artikkel
-
Chen, Ming;
Ekman, Torbjörn;
Viberg, Mats.
(2007)
New Approaches for Channel Prediction Based on Sinusoidal Modeling.
EURASIP Journal on Advances in Signal Processing
Vitenskapelig artikkel
Bøker
-
Son, Le Thanh;
Ekman, Torbjörn;
Orten, Pål.
(2008)
Cross-Layer Random Access and Channel Assignment for Uplink Broadband Wireless System.
IEEE conference proceedings
IEEE conference proceedings
Vitenskapelig antologi/Konferanseserie
-
Son, Le Thanh;
Ekman, Torbjörn;
Orten, Pål.
(2008)
Iterative Two-Layer CI Phase Coding Enhancement of Uplink Broadband Wireless Access System.
IEEE conference proceedings
IEEE Vehicular Technology Conference (VTC) (10.1109/VETECF.2008.407)
Vitenskapelig antologi/Konferanseserie
-
Cheffena, Michael;
Ekman, Torbjörn.
(2008)
Modeling the Dynamic Effects of Vegetation on Radiowave Propagation.
IEEE conference proceedings
IEEE International Conference on Communications (10.1109/ICC.2008.838 )
Vitenskapelig antologi/Konferanseserie
-
Son, Le Thanh;
Ekman, Torbjörn;
Orten, Pål.
(2008)
Two-Layer CI Phase Coding Interference Cancellation and Detection of Uplink Broadband Wireless Access System.
IEEE conference proceedings
IEEE conference proceedings
Vitenskapelig antologi/Konferanseserie
Del av bok/rapport
-
Yang, Kun;
Zhou, Ning;
Røste, Terje;
Yu, Junyi;
Li, Fang;
Chen, Wei.
(2019)
High-speed Vehicle-to-Vehicle Radio Channel Characteristics for Suburban and Municipal Lake Region at 5.9 GHz.
IEEE (Institute of Electrical and Electronics Engineers)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Lundheim, Lars Magne;
Ekman, Torbjörn;
Gajic, Bojana;
Larsen, Bjørn B.;
Tybell, Per Thomas Martin.
(2016)
Early Innovation Projects: First Experiences from the Electronic Engineering Ladder at NTNU.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Larsen, Bjørn B.;
Lundheim, Lars Magne;
Ekman, Torbjörn;
Tybell, Per Thomas Martin.
(2016)
Teaching Freshmen Engineering Communication.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Askeland, Stein-Arne;
Ekman, Torbjörn.
(2014)
2D spectral estimation for unambiguous detection of automotive radar targets.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Cella, Tommaso;
Orten, Pål;
Ekman, Torbjörn.
(2014)
MM-WAVE SHORT RANGE OUTDOOR LINKS WITH PHASED ARRAYS.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Askeland, Stein-Arne;
Ekman, Torbjörn.
(2013)
Interpolated Root-Music for transversal automotive radar traffic monitoring.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Godana, Bruhtesfa;
Ekman, Torbjörn.
(2013)
Rotative Quantization Using Adaptive Range for Temporally Correlated MIMO Channels.
IEEE Sarnoff Symposium
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Cella, Tommaso;
Orten, Pål;
Ekman, Torbjörn.
(2013)
Wireless access using MIMO subarrays at mm-wave bands.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn;
Tesfamicael, Solomon Abedom.
(2012)
Block Diagonal Inversion Precoding for MIMO Broadcast Channels.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2012)
Experimental multipath delay profile of mobile radio channels over sea at 2 GHz.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn.
(2011)
A reduced quantization range feedback method for time-varying MIMO systems.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Vijayandran, Luxmiram;
Kansanen, Kimmo;
Brandt-Pearce, Maïté;
Ekman, Torbjörn.
(2011)
Energy efficient state estimation through stochastic optimization.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Godana, Bruhtesfa Ebrahim;
Ekman, Torbjörn.
(2011)
Linear prediction of time-varying MIMO systems using Givens rotations.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Vijayandran, Luxmiram;
Dharmawansa, Prathapasinghe;
Ekman, Torbjörn;
Tellambura, Chinthananda.
(2011)
Aggregate Interference and System Performance in Finite Area Cognitive Radio Networks.
IEEE Sarnoff Symposium
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy angular distribution for clustered radio propagation SIMO channel model.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Channel characterization including path loss and Doppler effects with sea reflections of mobile radio propagation over sea at 2 GHz.
IEEE Signal Processing Society
Annet
-
Li, Xin;
Ekman, Torbjörn.
(2010)
Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model.
IEEE Press
Annet
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Channel characterization of mobile radio channel over sea at 2 GHz.
Annet
-
Yang, Kun;
Røste, Terje;
Bekkadal, Fritz;
Ekman, Torbjörn.
(2010)
Land-to-ship radio channel measurements over sea at 2 GHz.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Mercier, Bertrand;
Fodor, Viktoria;
Thobaben, Ragnar;
Skoglund, Mikael;
Koivunen, Visa;
Lindfors, Saska.
(2008)
Sensor networks for cognitive radio: Theory and system design.
International Information Management Corporation Limited
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bang, Hans Jørgen;
Ekman, Torbjörn.
(2007)
Opportunistic Round Robin with Extended Window for Time Correlated Channels.
IEEE conference proceedings
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Cheffena, Michael;
Bråten, Lars Erling;
Tjelta, Terje;
Ekman, Torbjörn.
(2006)
Space-time dynamic channel model for broadband fixed wireless access.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Rapport
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Cella, Tommaso;
Ekman, Torbjörn.
(2015)
High Capacity and High Coverage mm-Wave Multi-Antenna Systems.
Doktoravhandlinger ved NTNU (2015/225)
Doktorgradsavhandling
Undervisning
Emner
Formidling
2022
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Vitenskapelig foredragQuintana Diaz, Gara; Ekman, Torbjörn; Camanzo-Mariño, Alejandro; Birkeland, Roger; Lago Agra, José Miguel; González Muíño, Alberto. (2022) Satellite Uplink Interference Measurements in the 437 MHz UHF Amateur Radio Band Onboard LUME-1. IAF International Astronautical Congress 2022 , Paris 2022-09-18 - 2022-09-22
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Vitenskapelig foredragBirkeland, Roger; Quintana DÃaz, Gara; Honoré-Livermore, Evelyn; Ekman, Torbjörn; Aguado, Fernando; Johansen, Tor Arne. (2022) A Multi-purpose Software Defined Radio Payload for the HYPSO-2 Satellite. IEEE IEEE Aerospace Conference , Big Sky, Montana 2022-03-05 - 2022-03-12
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Vitenskapelig foredragQuintana DÃaz, Gara; Birkeland, Roger; Løge, Lars; Andersen, Even; Bolstad, Anton; Ekman, Torbjörn. (2022) In-orbit Interference Measurements and Analysis in the VDES-band with the NorSat-2 Satellite. IEEE Aerospace Conference , Big Sky, Montana 2022-03-05 - 2022-03-12
2021
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Vitenskapelig foredragAbraham, Jens; Ekman, Torbjörn. (2021) Local Diversity and Ultra-Reliable Antenna Arrays. 55th Asilomar Conference on Signals, Systems and Computers , Pacific Grove 2021-10-31 - 2021-11-03
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Vitenskapelig foredragAbraham, Jens; Ekman, Torbjörn. (2021) Fading Margins for Large-Scale Antenna Systems. ICC 2021 - IEEE International Conference on Communications , Montreal 2021-06-14 - 2021-06-23
2020
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PosterAbraham, Jens; Ekman, Torbjörn. (2020) Achievable Synchronisation Gain In Uncalibrated Large Scale Antenna Systems. 14th European Conference on Antennas and Propagation (EuCAP) , Copenhagen 2020-03-15 - 2020-03-20
2019
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PosterQuintana Díaz, Gara; Birkeland, Roger; Honoré-Livermore, Evelyn; Ekman, Torbjörn. (2019) An SDR mission measuring UHF signal propagation and interference between small satellites in LEO and Arctic sensors. 33rd Annual AIAA/USU Conference on Small Satellites , Logan 2019-08-03 - 2019-08-08
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PosterAbraham, Jens; Ekman, Torbjörn. (2019) Power Inversion of the Massive MIMO Channel. 9th joint WIC IEEE SP Symposium on Information Theory and signal Processing in the Benelux 2019-05-28 - 2019-05-29
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Vitenskapelig foredragYang, Kun; Zhou, Ning; Røste, Terje; Yu, Junyi; Li, Fang; Chen, Wei. (2019) High-speed Vehicle-to-Vehicle Radio Channel Characteristics for Suburban and Municipal Lake Region at 5.9 GHz. IEEE 2019 13th European Conference on Antennas and Propagation (EuCAP) , Krakow 2019-03-31 - 2019-05-05
2018
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Vitenskapelig foredragYang, Kun; Zhou, Ning; Molisch, Andreas F.; Røste, Terje; Eide, Egil; Ekman, Torbjörn. (2018) Propagation measurements of mobile channel over sea at 5.9 GHz. 2018 16th International Conference on Intelligent Transportation Systems Telecommunications (ITST) , Lisbon 2018-10-15 - 2018-10-17
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Vitenskapelig foredragGhiaasi Hafezi, Golsa; Abraham, Jens; Eide, Egil; Ekman, Torbjörn. (2018) Measured Channel Hardening in an Indoor Multiband Scenario. COST Action CA15104 IRACON 7th MC Meeting and 7th Technical Meeting , Cartagena 2018-05-30 - 2018-06-01
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Vitenskapelig foredragGhiaasi Hafezi, Golsa; Abraham, Jens; Eide, Egil; Ekman, Torbjörn. (2018) Measured Channel Hardening in an Indoor Multiband Scenario. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications , Bolgna 2018-09-09 - 2018-09-12
2017
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Vitenskapelig foredragLundheim, Lars Magne; Ekman, Torbjörn; Larsen, Bjørn B.; Tybell, Per Thomas Martin. (2017) Teoriforståing og identitetsbygging gjennom praktisk designarbeid. Universitets- og høgskolerådet, UHR ved fagstrategiske enhet MNT-konferansen 2017 , Oslo 2017-03-30 - 2017-03-31
2016
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Vitenskapelig foredragLundheim, Lars Magne; Ekman, Torbjörn; Gajic, Bojana; Larsen, Bjørn B.; Tybell, Per Thomas Martin. (2016) Early Innovation Projects: First Experiences from the Electronic Engineering Ladder at NTNU. 2016 12th International CDIO Conference 2016-06-12 - 2016-06-16
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Vitenskapelig foredragLarsen, Bjørn B.; Lundheim, Lars Magne; Ekman, Torbjörn; Tybell, Per Thomas Martin. (2016) Teaching Freshmen Engineering Communication. 11th European Workshop on Microelectronics Education (EWME) , Southampton 2016-05-11 - 2016-05-13
2015
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Vitenskapelig foredragLundheim, Lars; Tybell, Thomas; Larsen, Bjørn B.; Ekman, Torbjörn. (2015) Den elektroniske ingeniørstigen – En tiltakspakke for mestring og identitetsbygging. Nasjonalt senter for realfagsrekruttering MNT-konferansen 2015 , Bergen 2015-03-18 -
2013
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Vitenskapelig foredragAskeland, Stein-Arne; Ekman, Torbjörn. (2013) Interpolated Root-Music for transversal automotive radar traffic monitoring. European Microwave Association European Microwave Week 2013 , Nürnberg 2013-11-06 - 2013-11-11
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Vitenskapelig foredragGodana, Bruhtesfa; Ekman, Torbjörn. (2013) Rotative Quantization Using Adaptive Range for Temporally Correlated MIMO Channels. IEEE Int. Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC) , London 2013-09-08 - 2013-09-11
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Vitenskapelig foredragGodana, Bruhtesfa Ebrahim; Ekman, Torbjörn. (2013) Practical Multiuser MIMO Beamforming using the Strongest Eigenmodes. IEEE Vehicular Technology Conference, VTC-Spring 2013 , Dresden 2013-06-02 - 2013-06-06
2012
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PosterLi, Xin; Ekman, Torbjörn. (2012) Rayleigh Scattering Cluster Based Spatial-Temporal-Spectral Correlation Properties with MIMO-OFDM Channel Model. IEEE Vehicular Technology Conference (VTC Fall), 2012 , Quebece 2012-09-03 - 2012-09-06
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Vitenskapelig foredragGodana, Bruhtesfa Ebrahim; Ekman, Torbjörn; Tesfamicael, Solomon Abedom. (2012) Block Diagonal Inversion Precoding for MIMO Broadcast Channels. Vehicular Technology Conference, VTC 2012-Fall 2012-09-03 - 2012-09-06
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Vitenskapelig foredragYang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2012) Experimental multipath delay profile of mobile radio channels over sea at 2 GHz. IEEE Antennas and Propagation Conference (LAPC), 2012 Loughborough , Loughborough 2012-11-12 - 2012-11-13
2011
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Populærvitenskapelig foredragYang, Kun; Ekman, Torbjörn; Røste, Terje; Bekkadal, Fritz. (2011) A quasi-deterministic path loss propagation model for the open sea environment. IEEE proceeding of the 14th International Symposium on Wireless Personal Multimedia Communications , Brest 2011-10-03 - 2011-10-07
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Vitenskapelig foredragVijayandran, Luxmiram; Brandt-Pearce, Maite; Kansanen, Kimmo; Ekman, Torbjörn. (2011) Efficient State Estimation with Energy Harvesting and Fairness Control Using Stochastic Optimization. IEEE IEEE Global Communications Conference (GLOBECOM) 2011 , Houston 2011-12-05 - 2011-12-09
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Vitenskapelig foredragVijayandran, Luxmiram; Dharmawansa, Prathapasinghe; Ekman, Torbjörn; Tellambura, Chinthananda. (2011) Aggregate Interference and System Performance in Finite Area Cognitive Radio Networks. The 22nd Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2011) , Toronto 2011-09-11 - 2011-09-14
2010
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Vitenskapelig foredragYang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Channel characterization of mobile radio channel over sea at 2 GHz. 10th Mediterranean Microwave Symposium 2010-08-25 - 2010-08-27
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Vitenskapelig foredragYang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Land-to-ship radio channel measurements over sea at 2 GHz. IEEE International Conference on Wireless Communications, Networking and Mobile Computing 2010-09-23 - 2010-09-25
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Vitenskapelig foredragYang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Channel characterization including path loss and Doppler effects with sea reflections of mobile radio propagation over sea at 2 GHz. The 2010 International Conference on Wireless Communications and Signal Processing , Suzhou 2010-10-21 - 2010-10-23
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Vitenskapelig foredragLi, Xin; Ekman, Torbjörn. (2010) Cauchy Angular Distribution for Clustered Radio Propagation SIMO Channel Model. IEEE Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st , Taipei 2010-05-16 - 2010-05-19
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Vitenskapelig foredragLi, Xin; Ekman, Torbjörn. (2010) Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model. IEEE Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd , Ottawa, ON 2010-09-06 - 2010-09-09
2009
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Vitenskapelig foredragVijayandran, Luxmiram; Byun, Sang-Seon; Øien, Geir Egil; Ekman, Torbjörn. (2009) Increasing sum rate in multiband cognitive radio networks by centralized power allocation schemes. IEEE IEEE Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) , Tokyo 2009-09-13 - 2009-09-16
2008
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Vitenskapelig foredragMercier, Bertrand; Fodor, Viktoria; Thobaben, Ragnar; Skoglund, Mikael; Koivunen, Visa; Lindfors, Saska. (2008) Sensor networks for cognitive radio: Theory and system design. European Commission ICT Mobile Summit 2008 , Stockholm 2008-06-10 - 2008-06-12
2006
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Vitenskapelig foredragCheffena, Michael ; Bråten, Lars Erling; Tjelta, Terje; Ekman, Torbjörn. (2006) Space-time dynamic channel model for broadband fixed wireless access. European Network of Excellence ACE The first European Conference on Antennas and Propagation (EuCAP 2006) , Nice 2006-11-06 - 2006-11-10
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Vitenskapelig foredragSon, Le Thanh; Ekman, Torbjörn; Orten, Pål. (2006) Performance of the multi-carrier LMDS system at the 28 GHz radio frequency band. MOSHARAKA, IEEE Communications Society Mobile Computing and Wireless Communications International Conference (MCWC), Amman , Amman 2006-09-17 - 2006-09-17
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Vitenskapelig foredragCheffena, Michael ; Bråten, Lars Erling; Tjelta, Terje; Ekman, Torbjörn. (2006) Time dynamic channel model for broadband fixed wireless access systems. IST IST Mobile and wireless summit 2006 , Myconos 2006-06-04 - 2006-06-08