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Torbjörn Ekman

Torbjörn Ekman

Professor
Institutt for elektroniske systemer

torbjorn.ekman@ntnu.no
73594604 Elektro B, B427, Gløshaugen, O. S. Bragstads plass 2
Om Publikasjoner Undervisning Formidling

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.

Se engelsk side for mer informasjon.

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Se alle publikasjoner i Cristin

2022

  • 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. volum 3.
    Vitenskapelig artikkel
  • Birkeland, Roger; Quintana Díaz, 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
  • Quintana Díaz, 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

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. volum 13 (16).
    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. volum 68 (9).
    Vitenskapelig artikkel
  • Yang, Kun; Zhou, Ning; Røste, Terje; Yu, Junyi; Li, Fang; Chen, Wei; Eide, Egil; Ekman, Torbjörn; Li, Changzhen; Chang, Fuxing. (2019) High-speed Vehicle-to-Vehicle Radio Channel Characteristics for Suburban and Municipal Lake Region at 5.9 GHz. 2019 13th European Conference on Antennas and Propagation (EuCAP 2019).
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2016

  • Larsen, Bjørn B.; Lundheim, Lars Magne; Ekman, Torbjörn; Tybell, Per Thomas Martin. (2016) Teaching Freshmen Engineering Communication. Proceedings of the 11th European Workshop on Microelectronics Education (EWME 2016).
    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. Proceedings of the 12th International CDIO Conference.
    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. volum 15 (11).
    Vitenskapelig artikkel

2015

  • 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). volum 16 (5).
    Vitenskapelig artikkel
  • Cella, Tommaso; Ekman, Torbjörn. (2015) High Capacity and High Coverage mm-Wave Multi-Antenna Systems. 2015. ISBN 978-82-326-1106-5. Doktoravhandlinger ved NTNU (2015/225).
    Doktorgradsavhandling
  • Ekman, Torbjörn. (2015) An fir predictor interpretation of LS estimation of sinusoidal amplitudes followed by extrapolation. European Signal Processing Conference. volum 06-10-September-2004.
    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. volum 19 (5).
    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. volum 15 (3).
    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. volum 19 (2).
    Vitenskapelig artikkel

2014

  • Askeland, Stein-Arne; Ekman, Torbjörn. (2014) 2D spectral estimation for unambiguous detection of automotive radar targets. Radar Conference, 2014 IEEE.
    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. volum 2014.
    Vitenskapelig artikkel
  • Cella, Tommaso; Orten, Pål; Ekman, Torbjörn. (2014) MM-WAVE SHORT RANGE OUTDOOR LINKS WITH PHASED ARRAYS. Communications, Control and Signal Processing (ISCCSP), 2014 6th International Symposium on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2013

  • Askeland, Stein-Arne; Ekman, Torbjörn. (2013) Interpolated Root-Music for transversal automotive radar traffic monitoring. European Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuRAD 2013: 10th European Radar Conference.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Cella, Tommaso; Orten, Pål; Ekman, Torbjörn. (2013) Wireless access using MIMO subarrays at mm-wave bands. International Symposium on Wireless and Pervasive Computing, ISWPC 2013.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • 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. volum 12 (10).
    Vitenskapelig artikkel
  • Godana, Bruhtesfa; Ekman, Torbjörn. (2013) Rotative Quantization Using Adaptive Range for Temporally Correlated MIMO Channels. Personal Indoor and Mobile Radio Communications (PIMRC), 2013 IEEE 24th International Symposium on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • 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. volum 12 (7).
    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

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. volum 60 (7).
    Vitenskapelig artikkel
  • Godana, Bruhtesfa Ebrahim; Ekman, Torbjörn; Tesfamicael, Solomon Abedom. (2012) Block Diagonal Inversion Precoding for MIMO Broadcast Channels. Vehicular Technology Conference (VTC Fall), 2012 IEEE.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • 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. volum 2012 (362).
    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. volum 60 (7).
    Vitenskapelig artikkel
  • Yang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2012) Experimental multipath delay profile of mobile radio channels over sea at 2 GHz. Antennas and Propagation Conference (LAPC), 2012 Loughborough.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2011

  • Godana, Bruhtesfa Ebrahim; Ekman, Torbjörn. (2011) A reduced quantization range feedback method for time-varying MIMO systems. Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Godana, Bruhtesfa Ebrahim; Ekman, Torbjörn. (2011) Linear prediction of time-varying MIMO systems using Givens rotations. Signal Processing Advances in Wireless Communications (SPAWC), 2011 IEEE 12th International Workshop on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • 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
  • Vijayandran, Luxmiram; Dharmawansa, Prathapasinghe; Ekman, Torbjörn; Tellambura, Chinthananda. (2011) Aggregate Interference and System Performance in Finite Area Cognitive Radio Networks. PIMRC'11: 2011 IEEE 22nd International Symposium on Personal,Indoor and Mobile Radio Communications.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Vijayandran, Luxmiram; Kansanen, Kimmo; Brandt-Pearce, Maïté; Ekman, Torbjörn. (2011) Energy efficient state estimation through stochastic optimization. Signal Processing Advances in Wireless Communications (SPAWC), 2011 IEEE 12th International Workshop on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2010

  • 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. volum 58 (10).
    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
  • Li, Xin; Ekman, Torbjörn. (2010) Cauchy angular distribution for clustered radio propagation SIMO channel model. Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st : ProceedingsTaipei, Taiwan 16-19 May 2010.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Li, Xin; Ekman, Torbjörn. (2010) Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model. Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd.
    Annet
  • 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
  • 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. Proceedings of the International Conference on Wireless Communications and Signal Processing (WCSP), 2010.
    Annet
  • Yang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Channel characterization of mobile radio channel over sea at 2 GHz. Proceeding of 10th Mediterranean Microwave Symposium (MMS).
    Annet
  • Yang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Land-to-ship radio channel measurements over sea at 2 GHz. 2010 6th International Conference on Wireless Communications, Networking and Mobile Computing : WICOM : September 23-25 2010, Chengsu, China.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2009

  • Cheffena, Michael; Bråten, Lars Erling; Ekman, Torbjörn. (2009) On the Space-Time Variations of Rain Attenuation. IEEE Transactions on Antennas and Propagation. volum 57 (6).
    Vitenskapelig artikkel
  • Cheffena, Michael; Bråten, Lars Erling; Ekman, Torbjörn. (2009) On the Space-Time Variations of Rain Attenuation. IEEE Transactions on Antennas and Propagation. volum 57 (6).
    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

2008

  • Bang, HJ; Ekman, Torbjörn; Ekman, Torbjörn; Gesbert, D. (2008) Channel predictive proportional fair scheduling. IEEE Transactions on Wireless Communications. volum 7 (2).
    Vitenskapelig artikkel
  • Cheffena, Michael; Ekman, Torbjörn. (2008) Modeling the Dynamic Effects of Vegetation on Radiowave Propagation. IEEE conference proceedings. 2008. ISBN 978-1-4244-2075-9. IEEE International Conference on Communications (10.1109/ICC.2008.838).
    Vitenskapelig antologi/Konferanseserie
  • Mercier, Bertrand; Fodor, Viktoria; Thobaben, Ragnar; Skoglund, Mikael; Koivunen, Visa; Lindfors, Saska; Ryynänen, Jussi; Larsson, Erik G.; Petrioli, Chiara; Bongiovanni, Gianni; Grøndalen, Ole; Kansanen, Kimmo; Ekman, Torbjörn; Øien, Geir Egil; Hayar, Aawatif M.; Knopp, Raymond; Lozano, Baltasar B.. (2008) Sensor networks for cognitive radio: Theory and system design. ICT-Mobile Summit 2008, Conference Proceedings.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Son, Le Thanh; Ekman, Torbjörn; Orten, Pål. (2008) Cross-Layer Random Access and Channel Assignment for Uplink Broadband Wireless System. IEEE conference proceedings. 2008. ISBN 9781424416448.
    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. 2008. ISBN 9781424417216. Proceedings of the IEEE VTS Vehicular Technology Conference (10.1109/VETECF.2008.407).
    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. 2008. ISBN 9781424419968.
    Vitenskapelig antologi/Konferanseserie

2007

  • Bang, Hans Jørgen; Ekman, Torbjörn. (2007) Opportunistic Round Robin with Extended Window for Time Correlated Channels. Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th.
    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. volum 2007.
    Vitenskapelig artikkel

2006

  • Cheffena, Michael; Bråten, Lars Erling; Tjelta, Terje; Ekman, Torbjörn. (2006) Space-time dynamic channel model for broadband fixed wireless access. The first European Conference on Antennas and Propagation (EuCAP 2006).
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Tidsskriftspublikasjoner

  • 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. volum 3.
    Vitenskapelig artikkel
  • Birkeland, Roger; Quintana Díaz, 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
  • Quintana Díaz, 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
  • 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. volum 13 (16).
    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. volum 68 (9).
    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. volum 15 (11).
    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). volum 16 (5).
    Vitenskapelig artikkel
  • Ekman, Torbjörn. (2015) An fir predictor interpretation of LS estimation of sinusoidal amplitudes followed by extrapolation. European Signal Processing Conference. volum 06-10-September-2004.
    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. volum 19 (5).
    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. volum 15 (3).
    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. volum 19 (2).
    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. volum 2014.
    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. volum 12 (10).
    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. volum 12 (7).
    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
  • 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. volum 60 (7).
    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. volum 2012 (362).
    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. volum 60 (7).
    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
  • 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. volum 58 (10).
    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
  • 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. volum 57 (6).
    Vitenskapelig artikkel
  • Cheffena, Michael; Bråten, Lars Erling; Ekman, Torbjörn. (2009) On the Space-Time Variations of Rain Attenuation. IEEE Transactions on Antennas and Propagation. volum 57 (6).
    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
  • Bang, HJ; Ekman, Torbjörn; Ekman, Torbjörn; Gesbert, D. (2008) Channel predictive proportional fair scheduling. IEEE Transactions on Wireless Communications. volum 7 (2).
    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. volum 2007.
    Vitenskapelig artikkel

Bøker

  • Cheffena, Michael; Ekman, Torbjörn. (2008) Modeling the Dynamic Effects of Vegetation on Radiowave Propagation. IEEE conference proceedings. 2008. ISBN 978-1-4244-2075-9. IEEE International Conference on Communications (10.1109/ICC.2008.838).
    Vitenskapelig antologi/Konferanseserie
  • Son, Le Thanh; Ekman, Torbjörn; Orten, Pål. (2008) Cross-Layer Random Access and Channel Assignment for Uplink Broadband Wireless System. IEEE conference proceedings. 2008. ISBN 9781424416448.
    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. 2008. ISBN 9781424417216. Proceedings of the IEEE VTS Vehicular Technology Conference (10.1109/VETECF.2008.407).
    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. 2008. ISBN 9781424419968.
    Vitenskapelig antologi/Konferanseserie

Del av bok/rapport

  • Yang, Kun; Zhou, Ning; Røste, Terje; Yu, Junyi; Li, Fang; Chen, Wei; Eide, Egil; Ekman, Torbjörn; Li, Changzhen; Chang, Fuxing. (2019) High-speed Vehicle-to-Vehicle Radio Channel Characteristics for Suburban and Municipal Lake Region at 5.9 GHz. 2019 13th European Conference on Antennas and Propagation (EuCAP 2019).
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Larsen, Bjørn B.; Lundheim, Lars Magne; Ekman, Torbjörn; Tybell, Per Thomas Martin. (2016) Teaching Freshmen Engineering Communication. Proceedings of the 11th European Workshop on Microelectronics Education (EWME 2016).
    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. Proceedings of the 12th International CDIO Conference.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Askeland, Stein-Arne; Ekman, Torbjörn. (2014) 2D spectral estimation for unambiguous detection of automotive radar targets. Radar Conference, 2014 IEEE.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Cella, Tommaso; Orten, Pål; Ekman, Torbjörn. (2014) MM-WAVE SHORT RANGE OUTDOOR LINKS WITH PHASED ARRAYS. Communications, Control and Signal Processing (ISCCSP), 2014 6th International Symposium on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Askeland, Stein-Arne; Ekman, Torbjörn. (2013) Interpolated Root-Music for transversal automotive radar traffic monitoring. European Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuRAD 2013: 10th European Radar Conference.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Cella, Tommaso; Orten, Pål; Ekman, Torbjörn. (2013) Wireless access using MIMO subarrays at mm-wave bands. International Symposium on Wireless and Pervasive Computing, ISWPC 2013.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Godana, Bruhtesfa; Ekman, Torbjörn. (2013) Rotative Quantization Using Adaptive Range for Temporally Correlated MIMO Channels. Personal Indoor and Mobile Radio Communications (PIMRC), 2013 IEEE 24th International Symposium on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Godana, Bruhtesfa Ebrahim; Ekman, Torbjörn; Tesfamicael, Solomon Abedom. (2012) Block Diagonal Inversion Precoding for MIMO Broadcast Channels. Vehicular Technology Conference (VTC Fall), 2012 IEEE.
    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. Antennas and Propagation Conference (LAPC), 2012 Loughborough.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Godana, Bruhtesfa Ebrahim; Ekman, Torbjörn. (2011) A reduced quantization range feedback method for time-varying MIMO systems. Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Godana, Bruhtesfa Ebrahim; Ekman, Torbjörn. (2011) Linear prediction of time-varying MIMO systems using Givens rotations. Signal Processing Advances in Wireless Communications (SPAWC), 2011 IEEE 12th International Workshop on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Vijayandran, Luxmiram; Dharmawansa, Prathapasinghe; Ekman, Torbjörn; Tellambura, Chinthananda. (2011) Aggregate Interference and System Performance in Finite Area Cognitive Radio Networks. PIMRC'11: 2011 IEEE 22nd International Symposium on Personal,Indoor and Mobile Radio Communications.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Vijayandran, Luxmiram; Kansanen, Kimmo; Brandt-Pearce, Maïté; Ekman, Torbjörn. (2011) Energy efficient state estimation through stochastic optimization. Signal Processing Advances in Wireless Communications (SPAWC), 2011 IEEE 12th International Workshop on.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Li, Xin; Ekman, Torbjörn. (2010) Cauchy angular distribution for clustered radio propagation SIMO channel model. Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st : ProceedingsTaipei, Taiwan 16-19 May 2010.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Li, Xin; Ekman, Torbjörn. (2010) Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model. Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd.
    Annet
  • 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. Proceedings of the International Conference on Wireless Communications and Signal Processing (WCSP), 2010.
    Annet
  • Yang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Channel characterization of mobile radio channel over sea at 2 GHz. Proceeding of 10th Mediterranean Microwave Symposium (MMS).
    Annet
  • Yang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2010) Land-to-ship radio channel measurements over sea at 2 GHz. 2010 6th International Conference on Wireless Communications, Networking and Mobile Computing : WICOM : September 23-25 2010, Chengsu, China.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Mercier, Bertrand; Fodor, Viktoria; Thobaben, Ragnar; Skoglund, Mikael; Koivunen, Visa; Lindfors, Saska; Ryynänen, Jussi; Larsson, Erik G.; Petrioli, Chiara; Bongiovanni, Gianni; Grøndalen, Ole; Kansanen, Kimmo; Ekman, Torbjörn; Øien, Geir Egil; Hayar, Aawatif M.; Knopp, Raymond; Lozano, Baltasar B.. (2008) Sensor networks for cognitive radio: Theory and system design. ICT-Mobile Summit 2008, Conference Proceedings.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Bang, Hans Jørgen; Ekman, Torbjörn. (2007) Opportunistic Round Robin with Extended Window for Time Correlated Channels. Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th.
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Cheffena, Michael; Bråten, Lars Erling; Tjelta, Terje; Ekman, Torbjörn. (2006) Space-time dynamic channel model for broadband fixed wireless access. The first European Conference on Antennas and Propagation (EuCAP 2006).
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Rapport

  • Cella, Tommaso; Ekman, Torbjörn. (2015) High Capacity and High Coverage mm-Wave Multi-Antenna Systems. 2015. ISBN 978-82-326-1106-5. Doktoravhandlinger ved NTNU (2015/225).
    Doktorgradsavhandling

Undervisning

Emner

  • FE8122 - Doktorgradsseminar i krets- og radiosystem design
  • TTT4130 - Digital kommunikasjon
  • TTT4145 - Radiokommunikasjon
  • TFE4590 - Electronic Systems Design, fordypningsprosjekt

Formidling

2022

  • Vitenskapelig foredrag
    Birkeland, Roger; Quintana Díaz, 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 Aerospace Conference . IEEE; Big Sky, Montana. 2022-03-05 - 2022-03-12.
  • Vitenskapelig foredrag
    Quintana Díaz, 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.
  • Vitenskapelig foredrag
    Quintana Diaz, Gara; Ekman, Torbjörn; Camanzo-Mariño, Alejandro; Birkeland, Roger; Lago Agra, José Miguel; González Muíño, Alberto; Agelet, Fernando Aguado. (2022) Satellite Uplink Interference Measurements in the 437 MHz UHF Amateur Radio Band Onboard LUME-1. International Astronautical Congress 2022 . IAF; Paris. 2022-09-18 - 2022-09-22.

2021

  • Vitenskapelig foredrag
    Abraham, 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.
  • Vitenskapelig foredrag
    Abraham, 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.

2020

  • Poster
    Abraham, 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

  • Poster
    Abraham, 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.
  • Poster
    Quintana 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.
  • Vitenskapelig foredrag
    Yang, Kun; Zhou, Ning; Røste, Terje; Yu, Junyi; Li, Fang; Chen, Wei; Eide, Egil; Ekman, Torbjörn; Li, Changzhen; Chang, Fuxing. (2019) High-speed Vehicle-to-Vehicle Radio Channel Characteristics for Suburban and Municipal Lake Region at 5.9 GHz. 2019 13th European Conference on Antennas and Propagation (EuCAP) . IEEE; Krakow. 2019-03-31 - 2019-05-05.

2018

  • Vitenskapelig foredrag
    Ghiaasi Hafezi, Golsa; Abraham, Jens; Eide, Egil; Ekman, Torbjörn. (2018) Measured Channel Hardening in an Indoor Multiband Scenario. IRACON 7th MC Meeting and 7th Technical Meeting . COST Action CA15104; Cartagena. 2018-05-30 - 2018-06-01.
  • Vitenskapelig foredrag
    Ghiaasi 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.
  • Vitenskapelig foredrag
    Yang, Kun; Zhou, Ning; Molisch, Andreas F.; Røste, Terje; Eide, Egil; Ekman, Torbjörn; Junyi, Yu; Li, Fang; Chen, Wei. (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.

2017

  • Vitenskapelig foredrag
    Lundheim, Lars Magne; Ekman, Torbjörn; Larsen, Bjørn B.; Tybell, Per Thomas Martin. (2017) Teoriforståing og identitetsbygging gjennom praktisk designarbeid. MNT-konferansen 2017 . Universitets- og høgskolerådet, UHR ved fagstrategiske enhet; Oslo. 2017-03-30 - 2017-03-31.

2016

  • Vitenskapelig foredrag
    Larsen, 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.
  • Vitenskapelig foredrag
    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. 2016 12th International CDIO Conference ; 2016-06-12 - 2016-06-16.

2015

  • Vitenskapelig foredrag
    Lundheim, Lars; Tybell, Thomas; Larsen, Bjørn B.; Ekman, Torbjörn. (2015) Den elektroniske ingeniørstigen – En tiltakspakke for mestring og identitetsbygging. MNT-konferansen 2015 . Nasjonalt senter for realfagsrekruttering; Bergen. 2015-03-18.

2013

  • Vitenskapelig foredrag
    Askeland, Stein-Arne; Ekman, Torbjörn. (2013) Interpolated Root-Music for transversal automotive radar traffic monitoring. European Microwave Week 2013 . European Microwave Association; Nürnberg. 2013-11-06 - 2013-11-11.
  • Vitenskapelig foredrag
    Godana, 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.
  • Vitenskapelig foredrag
    Godana, 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.

2012

  • Vitenskapelig foredrag
    Godana, 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.
  • Poster
    Li, Xin; Ekman, Torbjörn. (2012) Rayleigh Scattering Cluster Based Spatial-Temporal-Spectral Correlation Properties with MIMO-OFDM Channel Model. Vehicular Technology Conference (VTC Fall), 2012 . IEEE; Quebece. 2012-09-03 - 2012-09-06.
  • Vitenskapelig foredrag
    Yang, Kun; Røste, Terje; Bekkadal, Fritz; Ekman, Torbjörn. (2012) Experimental multipath delay profile of mobile radio channels over sea at 2 GHz. Antennas and Propagation Conference (LAPC), 2012 Loughborough . IEEE; Loughborough. 2012-11-12 - 2012-11-13.

2011

  • Vitenskapelig foredrag
    Vijayandran, Luxmiram; Brandt-Pearce, Maite; Kansanen, Kimmo; Ekman, Torbjörn. (2011) Efficient State Estimation with Energy Harvesting and Fairness Control Using Stochastic Optimization. IEEE Global Communications Conference (GLOBECOM) 2011 . IEEE; Houston. 2011-12-05 - 2011-12-09.
  • Vitenskapelig foredrag
    Vijayandran, 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.
  • Populærvitenskapelig foredrag
    Yang, Kun; Ekman, Torbjörn; Røste, Terje; Bekkadal, Fritz. (2011) A quasi-deterministic path loss propagation model for the open sea environment. proceeding of the 14th International Symposium on Wireless Personal Multimedia Communications . IEEE; Brest. 2011-10-03 - 2011-10-07.

2010

  • Vitenskapelig foredrag
    Li, Xin; Ekman, Torbjörn. (2010) Cauchy Angular Distribution for Clustered Radio Propagation SIMO Channel Model. Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st . IEEE; Taipei. 2010-05-16 - 2010-05-19.
  • Vitenskapelig foredrag
    Li, Xin; Ekman, Torbjörn. (2010) Cauchy Power Azimuth Spectrum for Clustered Radio Propagation MIMO Channel Model. Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd . IEEE; Ottawa, ON. 2010-09-06 - 2010-09-09.
  • Vitenskapelig foredrag
    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. The 2010 International Conference on Wireless Communications and Signal Processing ; Suzhou. 2010-10-21 - 2010-10-23.
  • Vitenskapelig foredrag
    Yang, 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.
  • Vitenskapelig foredrag
    Yang, 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.

2009

  • Vitenskapelig foredrag
    Vijayandran, Luxmiram; Byun, Sang-Seon; Øien, Geir Egil; Ekman, Torbjörn. (2009) Increasing sum rate in multiband cognitive radio networks by centralized power allocation schemes. IEEE Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) . IEEE; Tokyo. 2009-09-13 - 2009-09-16.

2008

  • Vitenskapelig foredrag
    Mercier, Bertrand; Fodor, Viktoria; Thobaben, Ragnar; Skoglund, Mikael; Koivunen, Visa; Lindfors, Saska; Ryynänen, Jussi; Larsson, Erik G.; Petrioli, Chiara; Bongiovanni, Gianni; Grøndalen, Ole; Kansanen, Kimmo; Ekman, Torbjörn; Øien, Geir Egil; Hayar, Aawatif M.; Knopp, Raymond; Lozano, Baltasar B.. (2008) Sensor networks for cognitive radio: Theory and system design. ICT Mobile Summit 2008 . European Commission; Stockholm. 2008-06-10 - 2008-06-12.

2006

  • Vitenskapelig foredrag
    Cheffena, Michael; Bråten, Lars Erling; Tjelta, Terje; Ekman, Torbjörn. (2006) Space-time dynamic channel model for broadband fixed wireless access. The first European Conference on Antennas and Propagation (EuCAP 2006) . European Network of Excellence ACE; Nice. 2006-11-06 - 2006-11-10.
  • Vitenskapelig foredrag
    Cheffena, Michael; Bråten, Lars Erling; Tjelta, Terje; Ekman, Torbjörn. (2006) Time dynamic channel model for broadband fixed wireless access systems. IST Mobile and wireless summit 2006 . IST; Myconos. 2006-06-04 - 2006-06-08.
  • Vitenskapelig foredrag
    Son, Le Thanh; Ekman, Torbjörn; Orten, Pål. (2006) Performance of the multi-carrier LMDS system at the 28 GHz radio frequency band. Mobile Computing and Wireless Communications International Conference (MCWC), Amman . MOSHARAKA, IEEE Communications Society; Amman. 2006-09-17 - 2006-09-17.
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