Mikael Coldrey

Forskare at Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Signal Processing

Dr. Mikael Coldrey is Adjunct Associate Professor in Signal Processing and he works since 2006 for Ericsson Research, Ericsson AB, Sweden, where he currently holds a Master Researcher position. He works with research and project management in the areas of signal processing and communications systems with special interest in advanced antenna systems for future 5G mobile communications and wireless backhaul.

Source: chalmers.se

Publications

2017

Quantized Precoding for Massive MU-MIMO

Sven Jacobsson, Giuseppe Durisi, Mikael Coldrey et al
IEEE Transactions on Communications. Vol. 65 (11), p. 4670-4684
Journal article
2017

Downlink Performance of Regularized ZF in Massive MIMO Systems Subject to IQ Imbalance

Nikolaos Kolomvakis, Mikael Coldrey, Thomas Eriksson et al
IEEE International Conference on Communications, ICC 2017, Paris, France, 21-25 May 2017, p. Artno 7997446-
Paper in proceedings
2017

Massive MIMO Systems with IQ Imbalance: Channel Estimation and Sum Rate Limits

Nikolaos Kolomvakis, Mikael Coldrey, Thomas Eriksson et al
IEEE Transactions on Communications. Vol. 65 (6), p. 2382 - 2396
Journal article
2017

On Out-of-Band Emissions of Quantized Precoding in Massive MU-MIMO-OFDM

Sven Jacobsson, Giuseppe Durisi, Mikael Coldrey et al
Proc. Asilomar Conf. Signals, Syst., Comput.
Paper in proceedings
2017

Massive MU-MIMO-OFDM Downlink with One-Bit DACs and Linear Precoding

Sven Jacobsson, Giuseppe Durisi, Mikael Coldrey et al
IEEE Global Communications Conference (GLOBECOM)
Paper in proceedings
2016

Adaptive Multicell 3-D Beamforming in Multiantenna Cellular Networks

Nima Seifi, Robert W. Heath Jr., Mikael Coldrey et al
IEEE Transactions on Vehicular Technology. Vol. 65 (8), p. 6217-6231
Journal article
2016

IQ Imbalance in Multiuser Systems: Channel Estimation and Compensation

Nikolaos Kolomvakis, Michail Matthaiou, Mikael Coldrey
IEEE Transactions on Communications. Vol. 64 (7), p. 3039-3051
Journal article
2016

Nonlinear 1-bit precoding for massive MU-MIMO with higher-order modulation

Sven Jacobsson, Giuseppe Durisi, Mikael Coldrey et al
Conference Record - Asilomar Conference on Signals, Systems and Computers, p. 763-767
Paper in proceedings
2015

Massive MIMO with IQ Imbalance: Performance analysis and compensation

Nikolaos Kolomvakis, Michail Matthaiou, Jingya Li et al
IEEE International Conference on Communications, ICC 2015, London, United Kingdom, 8-12 June 2015, p. 1703-1709
Paper in proceedings
2015

One-Bit Massive MIMO: Channel Estimation and High-Order Modulations

Sven Jacobsson, Giuseppe Durisi, Mikael Coldrey et al
2015 IEEE International Conference on Communication Workshop, ICCW 2015, p. 1304-1309
Paper in proceedings
2014

On the MIMO Capacity with Residual Transceiver Hardware Impairments

Xinlin Zhang, Michail Matthaiou, Emil Björnson et al
IEEE International Conference on Communications, ICC 2014, Sydney, Australia, p. 5299-5305
Paper in proceedings
2014

Massive MIMO in Sparse Channels

Nikolaos Kolomvakis, Michail Matthaiou, Mikael Coldrey
2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) (October), p. 21-25
Paper in proceedings
2014

Impact of Residual Transmit RF Impairments on Training-Based MIMO Systems

Xinlin Zhang, Michail Matthaiou, Mikael Coldrey et al
IEEE International Conference on Communications, ICC 2014, Sydney, Australia, p. 4741-4746
Paper in proceedings
2012

Efficient Channel Estimation Techniques for Amplify and Forward Relaying Systems

Panagiota Lioliou, Mats Viberg, Mikael Coldrey
IEEE Transactions on Communications. Vol. 60 (11), p. 3150-3155
Journal article
2012

Throughput optimization in MU-MIMO systems via exploiting bs antenna tilt

Nima Seifi, Mikael Coldrey, Tommy Svensson
2012 IEEE Globecom Workshops, GC Wkshps 2012, p. 653-657
Paper in proceedings
2010

Self-Interference Suppression in Full-Duplex MIMO Relays

Panagiota Lioliou, Mats Viberg, Mikael Coldrey et al
44th Asilomar Conference on Signals, Systems and Computers, p. 658-662
Paper in proceedings
2010

An Efficient Signaling for Multi-mode Transmission in Multi-user MIMO

Nima Seifi, Tony Ottosson Gadd, Mats Viberg et al
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, p. 3402-3405
Paper in proceedings
2006

Generalization and Analysis of the Conventional Beamformer for Localization of Spatially Distributed Sources

Mikael Coldrey, Mats Viberg
In Proc. 14th European Signal Processing Conference, EUSIPCO 2006
Paper in proceedings
2005

Training-Based MIMO Systems: Part I - Performance Comparison

Mikael Coldrey, Patrik Bohlin
Report
2004

Optimized Data Aided Training in MIMO Systems

Patrik Bohlin, Mikael Coldrey
IEEE Vehicular Technology Conference, VTC 2004 Spring, Milan, Italy
Paper in proceedings
2004

Multiple-Antenna Channel Estimation Using Detected Symbol Information

Mikael Coldrey, Patrik Bohlin, Mats Viberg
PCC Workshop & Nordic Radio Symposium NRS '04, Oulu, Finland
Paper in proceedings
2004

A Capacity Comparison between Time-Multiplexed and Superimposed Pilots

Mikael Coldrey, Patrik Bohlin
Proc. 38th Asilomar Conference on Signals, Systems and Computers, Monterey, USA
Paper in proceedings
2004

Performance Evaluation of MIMO Communication Systems based Superimposed Pilots

Patrik Bohlin, Mikael Coldrey
IEEE International Conference on Acoustics, Speech, and Signal Processing; Montreal, Que; Canada; 17 May 2004 through 21 May 2004. Vol. 4, p. IV-425-IV-428-
Paper in proceedings
2003

Analysis of spectral-based localization of spatially distributed sources

Mikael Coldrey, Mats Viberg
13th IFAC Symposium on System Identification, SYSID 2003, Rotterdam, Netherlands
Paper in proceedings
2003

Performance Evaluation of MIMO Wireless Communication Systems Employing Pilot Training for Channel Estimation

Mikael Coldrey, Patrik Bohlin
PCC Workshop & Ericsson/TeliaSonera Research Days 2003, Stockholm, Sweden
Paper in proceedings
2003

On the use of beamforming for estimation of spatially distributed signals

Mikael Coldrey
IEEE International Conference on Acoustics Speech and Signal Processing, ICASSP '03, Hong Kong, China, APR 06-10. Vol. 5, p. 369-372
Paper in proceedings
2002

Beamforming-based Estimators for Spatially Distributed Signals

Mikael Coldrey
PCC Workshop & RadioVetenskap och Kommunikation, RVK '02, Stockholm, Sweden
Paper in proceedings
2002

Direction and Spread Estimation of Spatially Distributed Signals via the Power Azimuth Spectrum

Mikael Coldrey
IEEE International Conference on Acoustics Speech and Signal Processing, ICASSP '02, Orlando, USA
Paper in proceedings

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Projects

2015–2020

Massive MIMO systems with low-resolution converters

Giuseppe Durisi Communication Systems
Mikael Coldrey Signal Processing
Swedish Foundation for Strategic Research (SSF)

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