Visa Koivunen

Professor, Signal Processing at Aalto University School of Business

Schools

  • Aalto University School of Business

Expertise

Links

Biography

Aalto University School of Business

Peer-reviewed scientific articles

Journal article-refereed, Original research

Mismatched filter design and interference mitigation for MIMO radars

Aittomäki, Tuomas; Koivunen, Visa
2017 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Alternative Derivation of FastICA with Novel Power Iteration Algorithm

Basiri, Shahab; Ollila, Esa; Koivunen, Visa
2017 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1070-9908

Enhanced bootstrap method for statistical inference in the ICA model

Basiri, Shahab; Ollila, Esa; Koivunen, Visa
2017 in SIGNAL PROCESSING (Elsevier)
ISSN: 0165-1684

Spatial Interpolation of Cyclostationary Test Statistics in Cognitive Radio Networks Methods and Field Measurements

Chaudhari, Sachin; Kosunen, Marko; Mäkinen, Semu; Chandrasekaran, Ramanathan; Oksanen, Jan; Laatta, Markus; Ryynanen, Jussi; Koivunen, Visa; Valkama, Mikko
2017 in IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9545

Joint Device Positioning and Clock Synchronization in 5G Ultra-Dense Networks

Koivisto, Mike; Costa, Mario; Werner, Janis; Heiska, Kari; Talvitie, Jukka; Leppanen, Kari; Koivunen, Visa; Valkama, Mikko
2017 in IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1536-1276

Radar Waveform Sidelobe Level Optimality and Sampling

Aittomäki, Tuomas; Koivunen, Visa
2016 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1070-9908

Robust, Scalable, and Fast Bootstrap Method for Analyzing Large Scale Data

Basiri, Shahab; Ollila, Esa; Koivunen, Visa
2016 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Generalized Multicarrier Radar: Models and Performance

Bica, Marian; Koivunen, Visa
2016 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Performance Evaluation of Cyclostationary-Based Cooperative Sensing Using Field Measurements

Chaudhari, Sachin; Kosunen, Marko; Mäkinen, Semu; Oksanen, Jan; Laatta, Markus; Ojaniemi, Jaakko; Koivunen, Visa; Ryynänen, Jussi; Valkama, Mikko
2016 in IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9545

Reinforcement Learning-Based Plug-in Electric Vehicle Charging with Forecasted Price

Chis, Adriana; Lunden, Jarmo; Koivunen, Visa
2016 in IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9545

Cooperative Simultaneous Localization and Mapping by Exploiting Multipath Propagation

Naseri, Hassan; Koivunen, Visa
2016 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Detection and Classification of OFDM Waveforms Using Cepstral Analysis

Jantti, Joona; Chaudhari, Sachin.; Koivunen, Visa
2015 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Ambiguity function of the transmit beamspace-based MIMO radar

Li, Yongzhe; Vorobyov, Sergiy A.; Koivunen, Visa
2015 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Robotics Inspired Opportunistic Routing for Cognitive Radio Using Potential Fields

Oksanen, Jan; Kaufman, Brett; Koivunen, Visa; Poor, H.Vincent
2015 in IEEE Transactions on Cognitive Communications and Networking (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 2332-7731

An Order Optimal Policy for Exploiting Idle Spectrum in Cognitive Radio Networks

Oksanen, Jan; Koivunen, Visa
2015 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Cooperative game-theoretic approach to spectrum sharing in cognitive radios

Rajasekharan, Jayaprakash; Koivunen, Visa
2015 in SIGNAL PROCESSING (Elsevier)
ISSN: 0165-1684

Application of Manifold Separation to Polarimetric Capon Beamformer and Source Tracking

Costa, Mario; Koivunen, Visa
2014 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Estimating Directional Statistics Using Wavefield Modeling and Mixtures of von-Mises Distributions

Costa, Mario; Koivunen, Visa; Poor, Harold Vincent
2014 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1070-9908

Introduction to the Issue on Signal Processing in Smart Electric Power Grid

Huang, Yih-Fang; Kishore, Shalinee; Koivunen, Visa; Mandic, Danilo; Tong, Lang
2014 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1932-4553

Cyclic frequencies of BOC-modulated GNSS signals and their potential within a cognitive positioning framework

Lohan, Simona; Lundén, Jarmo; Seco-Granados, Gonzalo; López-Salcedo, José A.; Koivunen, Visa
2014 in NAVIGATION (Institute of Navigation)
ISSN: 0028-1522

Spatial sign and rank cyclic detectors

Lundén, Jarmo; Koivunen, Visa
2014 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1070-9908

Optimal Energy Consumption Model for Smart Grid Households with Energy Storage

Rajasekharan, Jayaprakash; Koivunen, Visa
2014 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1932-4553

Time Synchronization and Ranging in OFDM Systems Using Time-Reversal

Abrudan, T.E.; Haghparast, A.; Koivunen, Visa
2013 in IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9456

BEP walls for cooperative sensing in cognitive radios using K-out-of-N fusion rule

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa; Poor, H.Vincent
2013 in SIGNAL PROCESSING (Elsevier)
ISSN: 0165-1684

Multiagent Reinforcement Learning Based Spectrum Sensing Policies for Cognitive Radio Networks

Lunden, Jarmo; Kulkarni, Sanjeev R.; Koivunen, Visa; Poor, H.Vincent
2013 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1932-4553

Cooperative Sensing with Imperfect Reporting Channels: Hard Decisions or Soft Decisions?

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa; Poor, H.Vincent
2012 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

DoA and Polarization Estimation for Arbitrary Array Configurations

Costa, Mario; Richter, Andreas; Koivunen, Visa
2012 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Flexible UL-DL Switching Point in TDD Cellular Local Area Wireless Networks

Jänis, Pekka; Ribeiro, Cássio B.; Koivunen, Visa
2012 in MOBILE NETWORKS AND APPLICATIONS (SPRINGER)
ISSN: 1383-469X

Construction of Minimum Euclidean Distance MIMO Precoders and Their Lattice Classifications

Kapetanovic, D.; Rusek, F.; Abrudan, T.E.; Koivunen, Visa
2012 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Diversity Transmission of Synchronization Sequences in MIMO Systems

Koivisto, T.; Koivunen, Visa
2012 in IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1536-1276

Performance of Mobile MIMO OFDM Systems With Application to UTRAN LTE Downlink

Oborina, Alexandra; Moisio, Martti; Koivunen, Visa
2012 in IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1536-1276

Reinforcement learning based sensing policy optimization for energy efficient cognitive radio networks

Oksanen, Jan; Lunden, Jarmo; Koivunen, Visa
2012 in NEUROCOMPUTING (Elsevier Science B.V.)
ISSN: 0925-2312

Compound-Gaussian clutter modelling with an inverse Gaussian texture distribution

Ollila, Esa; Tyler, David E.; Koivunen, Visa; Poor, H.Vincent
2012 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1070-9908

Complex elliptically symmetric distributions: survey, new results and applications

Ollila, Esa; Tyler, David E.; Koivunen, Visa; Poor, H.Vincent
2012 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Robust Estimation in Signal Processing: A Tutorial-Style Treatment of Fundamental Concepts

Zoubir, A.M.; Koivunen, Visa; Chakhchoukh, Y.; Muma, M.
2012 in IEEE Signal Processing Magazine (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-5888

Interference Aware Radio Resource Management for Local Area Wireless Networks

Jänis, Pekka; Koivunen, Visa; Ribeiro, Cassio B.
2011 in EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING (Springer Publishing Company)
ISSN: 1687-1472

Complex Elliptically Symmetric Random Variables-Generation, Characterization, and Circularity Tests

Ollila, Esa; Eriksson, Jan; Koivunen, Visa
2011 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Performance Analysis of Joint Opportunistic Scheduling and Receiver Design for MIMO-SDMA Downlink Systems

Pun, Man-On; Koivunen, Visa; Poor, H.Vincent
2011 in IEEE TRANSACTIONS ON COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 0090-6778

Performance of MIMO radar with angular diversity under Swerling scattering models

Aittomäki, Tuomas; Koivunen, Visa
2010 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1932-4553

Essential Statistics and Tools for Complex Random Variables

Eriksson, Jan; Ollila, Esa; Koivunen, Visa
2010 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Blind Separation of Two Users Based on User Delays and Optimal Pulse-Shape Design

Liu, Xin; Petropulu, Athina P.; Poor, Vincent H.; Koivunen, Visa
2010 in EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING (Springer Publishing Company)
ISSN: 1687-1472

Robust Nonparametric Cyclic Correlation-Based Spectrum Sensing for Cognitive Radio

Lundén, Jarmo; Koivunen, Visa
2010 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Unified Array Manifold Decomposition based on Spherical Harmonics and 2-D Fourier Basis

Pereira Da Costa, Mario; Richter, Andreas; Koivunen, Visa
2010 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Conjugate gradient algorithm for optimization under unitary matrix constraint

Abrudan, Traian; Eriksson, Jan; Koivunen, Visa
2009 in SIGNAL PROCESSING (Elsevier)
ISSN: 0165-1684

Autocorrelation-Based Decentralized Sequential Detection of OFDM Signals in Cognitive Radios

Chaudhari, Sachin; Koivunen, Visa; Poor, Vincent H.
2009 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-587X

Device-to-Device communication underlaying cellular communications systems

Jänis, Pekka; Yu, Chia-Hao; Doppler, Klaus; Ribeiro, Cassio; Wijting, C.; Hugl, Klaus; Tirkkonen, Olav; Koivunen, Visa
2009 in INTERNATIONAL JOURNAL OF COMMUNICATION NETWORKS AND DISTRIBUTED SYSTEMS (Inderscience Publishers)
ISSN: 1754-3916

Collaborative cyclostationary spectrum sensing for cognitive radio systems

Lundén, Jarmo; Koivunen, Visa; Huttunen, Anu; Poor, H.Vincent
2009 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Complex ICA using generalized uncorrelating transform

Ollila, Esa; Koivunen, Visa
2009 in SIGNAL PROCESSING (Elsevier)

Influence function and asymptotic efficiency of scatter matrix array processors: Case MVDR beamformer

Ollila, Esa; Koivunen, Visa
2009 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Detection and Tracking of MIMO Propagation Path Parameters Using State-Space Approach

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2009 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Sequential Unfolding SVD for Tensors with Applications in Array Signal Processing

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2009 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Steepest Descent Algorithms for Optimization Under Unitary Matrix Constraint

Abrudan, Traian E.; Eriksson, Jan; Koivunen, Visa
2008 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Complex-valued ICA based on a pair of generalized covariance matrics

Ollila, Esa; Oja, Hannu; Koivunen, Visa
2008 in COMPUTATIONAL STATISTICS AND DATA ANALYSIS (Elsevier Science B.V.)

Compact CRB expression for independent components analysis

Ollila, Esa; Kim, H-J; Koivunen, Visa
2008 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Blind equalization in spatial multiplexing MIMO-OFDM systems based on vector CMA and decorrelation criteria

Abrudan, Traian; Koivunen, Visa
2007 in Wireless Personal Communications (SPRINGER)

DoA Estimation Via Manifold Separation for Arbitrary Array Structures

Belloni, Fabio; Richter, Andreas; Koivunen, Visa
2007 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

State-space approach to spatially correlated MIMO OFDM channel estimation

Enescu, Mihai; Roman, Timo; Koivunen, Visa
2007 in SIGNAL PROCESSING (Elsevier)

Blind despreading of short-code DS-CDMA signals in asynchronous multi-user systems

Koivisto, Tommi; Koivunen, Visa
2007 in SIGNAL PROCESSING (Elsevier)

Automatic radar waveform recognition

Lundén, Jarmo; Koivunen, Visa
2007 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Stochastic Maximum-Likelihood Method for MIMO Propagation Parameter Estimation

Ribeiro, Cássio; Ollila, Esa; Koivunen, Visa
2007 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Joint Angular- and Delay-Domain MIMO Propagation Parameter Estmation Using Approximate ML Method

Ribeiro, Cássio B.; Richter, Andreas; Koivunen, Visa
2007 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Householder multistage Wiener filter for space-time navigation receivers

Werner, Stefan; With, M.; Koivunen, V.
2007 in IEEE Transactions on Aerospace and Electronic Systems (Institute of Electrical and Electronics Engineers Inc.)

Beamspace Transform for UCA: Error Analysis and Bias Reduction

Belloni, Fabio; Koivunen, Visa
2006 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Complex random vectors and ICA models. identifiability, uniqueness, and separability

Eriksson, Jan; Koivunen, Visa
2006 in IEEE Transactions on information theory (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Blind Frequency Synchronization in OFDM via Diagonality Criterion

Roman, Timo; Visuri, Samuli; Koivunen, Visa
2006 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Adaptive equalization of time-varying MIMO channels

Enescu, Mihai; Sirbu, Marius; Koivunen, Visa
2005 in SIGNAL PROCESSING (Elsevier)
ISSN: 0165-1684

Blind Signal Estimation in Conjugate Signal Models With Application to I/Q Imbalance Compensation

Valkama, Mikko; Renfors, Markku; Koivunen, Visa
2005 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Blind I/Q Signal Separation-Based Solutions for Receiver Signal Processing

Valkama, Mikko; Renfors, Markku; Koivunen, Visa
2005 in EURASIP Journal on Applied Signal Processing (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Identifiability, Separability, and Uniqueness of Linear ICA Models

Eriksson, Jan; Koivunen, Visa
2004 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Independent component analysis via optimum combining of kurtosis and skewness-based criteria

Karvanen, Juha; Koivunen, Visa
2004 in Journal of The Frankling Institute (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Blind Channel Estimation in Multicode CDMA Using Multiantenna Receiver

Melvasalo, Maarit; Koivunen, Visa
2004 in Wireless Personal Communications (SPRINGER)

Joint Time-Doman Tracking of Channel and Frequency Offsets for MIMO OFDM Systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2004 in Wireless Personal Communications (SPRINGER)

Delay Estimation in Long-Code Asynchronous DS-CDMA Systems Using Multiple Antennas

Sirbu, Marius; Koivunen, Visa
2004 in EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING (Springer Publishing Company)

Characteristic-function-based independent component analysis

Eriksson, Jan; Koivunen, Visa
2003 in SIGNAL PROCESSING (Elsevier)

Estimates of Regression Coefficients Based on Lift Rank Covariance Matrix

Ollila, Esa; Oja, Hannu; Koivunen, Visa
2003 in The Journal of the American Statistical Association (Elsevier)

Multichannel Estimation and Equalization Algorithm for Asynchronous Uplink DS/CDMA*

Sirbu, Marius; Koivunen, Visa
2003 in Wireless Personal Communications (SPRINGER)

Affine equivariant multivariate rank methods

Visuri, Samuli; Ollila, Esa; Koivunen, Visa; Möttönen, Jyrki; Oja, Hannu
2003 in JOURNAL OF STATISTICAL PLANNING AND INFERENCE (Elsevier)

Blind separation methods based on Pearson system and its extensions

Karvanen, Juha; Koivunen, Visa
2002 in SIGNAL PROCESSING (Elsevier)

Adaptive Score Functions for Maximum Likelihood ICA

Karvanen, Juha; Eriksson, Jan; Koivunen, Visa
2002 in Journal of VLSI SIGNAL PROCESSING SYSTEMS for Signal, Image, and Video Technology (Elsevier)

Adaptive Algorithm for Blind Separation from Noisy Time-Varying Mixtures

Koivunen, Visa; Enescu, Mihai; Oja, Erkki
2001 in NEURAL COMPUTATION (MIT PRESS)

Sokeat signaalinkäsittelyn menetelmät tietoliikenteessä

Koivunen, Visa
2001 in Prosessori (MIT PRESS)
ISSN: 0357-4121

Performance Bounds for Multistep Prediction-Based Blind Equalization

Mannekoski, J.; Koivunen, V.; Taylor, D.P
2001 in IEEE TRANSACTIONS ON COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Advanced Methods for I/Q Imbalance Compensation in Communication Receivers

Valkama, Mikko; Renfors, Markku; Koivunen, Visa
2001 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Subspace-Based Direction-of-Arrival Estimation Using Nonparametric Statistics

Visuri, Samuli; Oja, Hannu; Koivunen, Visa
2001 in IEEE TRANSACTIONS ON SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)

Sign and rank covariance matrices

Visuri, S.; Koivunen, V.; Oja, H.
2000 in JOURNAL OF STATISTICAL PLANNING AND INFERENCE (Elsevier)

Review article, Literature review, Systematic review

Spectrum exploration and exploitation for cognitive radio: Recent advances

Lundén, Jarmo; Koivunen, Visa; Poor, H.Vincent
2015 in IEEE Signal Processing Magazine (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1053-5888

Book section, Chapters in research books

Nonparametric Detection of Complex-Valued Cyclostationary Signals

Koivunen, Visa; Lunden, Jarmo
2015
ISBN: 978-3-319-22403-9

Riemannian optimization in complex-valued ICA

Koivunen, Visa; Abrudan, Traian
2015
ISBN: 9780128028063

Array Processing in the face of nonidealities

Costa, Mario; Koivunen, Visa; Viberg, Mats
2014
ISBN: 9780124115972

Model order selection

Koivunen, Visa; Ollila, Esa
2014
ISBN: 978-0-12-411597-2

Robust Compressive Sensing

Ollila, Esa; Kim, Hyon-Jung; Koivunen, Visa
2014
ISBN: 9781482241396

Spectrum exploration and exploitation

Lundén, Jarmo; Koivunen, Visa; Poor, H.Vincent
2013
ISBN: 978-1-107-02875-3

Robust estimation techniques for complex-valued random vectors

Ollila, Esa; Koivunen, Visa
2010
ISBN: 9780470195178

Direction-of-arrival estimation under uncertainly

Koivunen, Visa; Ollila, Esa
2006
ISBN: 1-59693-004-7

Blind and Semiblind Channel Estimation

Koivunen, Visa; Enescu, Mihai; Sirbu, Marius
2004
ISBN: 0-8493-1427-5

Robust ML-estimation of the Transmitter Location

Ollila, Esa; Koivunen, Visa
2004
ISBN: 3-7643-7060-2

12.Blind Methods for Wireless Communication Receivers

Koivunen, Visa; Laurila, Juha; Bonek, Ernst
2002

Conference proceedings

Delay estimation method for coexisting radar and wireless communication systems

Bica, Marian; Koivunen, Visa
2017 in Proceedings of the IEEE Radar Conference (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781467388238
ISSN: 1097-5764

Coalitional game theoretic optimization of electricity cost for communities of smart households

Chiş, Adriana; Lundén, Jarmo; Koivunen, Visa
2017 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (IEEE)
ISBN: 9781509041176
ISSN: 2379-190X

Sparsity-promoting bootstrap method for large-scale data

Koivunen, Visa; Mozafari, Majd
2017 in Asilomar Conference on Signals, Systems, and Computers proceedings (IEEE COMPUTER SOCIETY PRESS)
ISBN: 9781538639542
ISSN: 1058-6393

Indoor mapping using MIMO radio channel measurements

Naseri, Hassan; Salmi, Jussi; Koivunen, Visa
2017 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (IEEE)
ISBN: 9781509041176
ISSN: 2379-190X

Learning spectrum opportunities in non-stationary radio environments

Oksanen, Jan; Koivunen, Visa
2017 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (IEEE)
ISBN: 9781509041176
ISSN: 2379-190X

Comparison of sparse sensor array configurations with constrained aperture for passive sensing

Rajamäki, Robin; Koivunen, Visa
2017 in Proceedings of the IEEE Radar Conference (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781467388238
ISSN: 1097-5764

Worst-case jamming signal design and avoidance for MIMO radars

Aittomäki, Tuomas; Koivunen, Visa
2016 in European Signal Processing Conference (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9780992862657
ISSN: 2219-5491

Iterative quadratic relaxation method for optimization of multiple radar waveforms

Aittomäki, Tuomas; Koivunen, Visa
2016 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781479999880
ISSN: 1520-6149

Opportunistic radar waveform design in joint radar and cellular communication systems

Bica, Marian; Huang, Kuan Wen; Mitra, Urbashi; Koivunen, Visa
2016 in IEEE Global Communications Conference (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781479959525
ISSN: 2334-0983

Mutual information based radar waveform design for joint radar and cellular communication systems

Bica, Marian; Huang, Kuan Wen; Koivunen, Visa; Mitra, Urbashi
2016 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781479999880
ISSN: 1520-6149

Demand response for renewable energy integration and load balancing in smart grid communities

Chis, Adriana; Rajasekharan, Jayaprakash; Lundén, Jarmo; Koivunen, Visa
2016 in European Signal Processing Conference (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9780992862657
ISSN: 2219-5491

Deep learning for HRRP-based target recognition in multistatic radar systems

Lundén, Jarmo; Koivunen, Visa
2016
ISBN: 9781509008636

Spectrum Maps for Cognition and Co-Existence of Communication and Radar Systems

Melvasalo, Maarit; Koivunen, Visa; Lunden, Jarmo
2016 in Asilomar Conference on Signals, Systems, and Computers proceedings (IEEE COMPUTER SOCIETY PRESS)
ISBN: 978-1-5386-3954-2
ISSN: 1058-6393

Cooperative joint synchronization and localization using time delay measurements

Naseri, Hassan; Koivunen, Visa
2016 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781479999880
ISSN: 1520-6149

Relative-gradient Bussgang-type blind equalization algorithms

Wu, Zhengwei; Kassam, Saleem A.; Koivunen, Visa
2016 in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (Institute of Electrical and Electronics Engineers Inc.)
ISBN: 9781479999880
ISSN: 1520-6149

Mismatched filter design for radar waveforms by semidefinite relaxation

Aittomaki, Tuomas; Koivunen, Visa
2015
ISBN: 978-1-4673-6997-8

Optimization of plug-in electric vehicle charging with forecasted price

Chis, Adriana; Lunden, Jarmo; Koivunen, Visa
2015
ISBN: 978-1-4673-6997-8

Randomized Simultaneous Orthogonal Matching Pursuit

Ejaz, Aqib; Ollila, Esa; Koivunen, Visa
2015
ISBN: 978-0-9928626-4-0

Radar waveform design in spectrum sharing environment: Coexistence and cognition

Huang, Kuan-Wen; Bica, Marian; Mitra, Urbashi; Koivunen, Visa
2015
ISBN: 978-1-4799-8231-8

New robust LASSO method based on ranks

Kim, Hyon-Jung; Ollila, Esa; Koivunen, Visa
2015
ISBN: 978-0-9928626-4-0

Indoor mapping based on time delay estimation in wireless networks

Naseri, Hassan; Koivunen, Visa
2015
ISBN: 978-1-4673-6997-8

Minimizing the routing delay in cognitive radios using potential fields

Oksanen, Jan; Kaufman, Brett; Koivunen, Visa; Poor, Harold Vincent
2015
ISBN: 978-1-4799-1932-1

Measurement Association in SFN Passive Radar Systems

Pölönen, Keijo; Koivunen, Visa
2015
ISBN: 978-1-4799-8231-8

Cooperative game-theoretic approach to load balancing in smart grids with community energy storage

Rajasekharan, Jayaprakash; Koivunen, Visa
2015
ISBN: 978-0-9928626-4-0
ISSN: 2076-1465

MIMO radar filterbank design for interference mitigation

Aittomäki, Tuomas; Koivunen, Visa
2014

FAST AND ROBUST BOOTSTRAP IN ANALYSING LARGE MULTIVARIATE DATASETS

Basiri, Shahab; Ollila, Esa; Koivunen, Visa
2014 in Conference Record of the Asilomar Conference on Signals Systems and Computers (IEEE COMPUTER SOC)
ISSN: 1058-6393

Fast and robust bootstrap method for testing hypotheses in the ICA model

Basiri, Shahab; Ollila, Esa; Koivunen, Visa
2014

Frequency Agile Generalized Multicarrier Radar

Bica, Marian; Koivunen, Visa
2014

Measurement campaign for collaborative sensing using cyclostationary based mobile sensors

Chaudhari, S.; Kosunen, Marko; Mäkinen, S.; Cárdenas-González, Ana; Koivunen, V.; Ryynänen, J.; Laatta, M.; Valkama, M.
2014

Cepstrum based detection and classification of OFDM waveforms

Jäntti, J.; Chaudhari, S.; Koivunen, V.
2014

Robust iteratively reweighted LASSO estimation for sparse tensor factorizations

Kim, Hyon-Jung; Ollila, Esa; Koivunen, Visa; Poor, H.Vincent
2014

Generalized ambiguity function for the MIMO radar with correlated waveforms

Li, Yongzhe; Vorobyov, Sergiy A.; Koivunen, Visa
2014
ISSN: 0736-7791

Multipath-Aided Cooperative Network Localization Using Convex Optimization

Naseri, Hassan; Costa, Mário; Koivunen, Visa
2014

A generalized formulation for harmonic retrieval in correlated noise

Naseri, Hassan; Costa, Mário; Koivunen, Visa
2014

Robust iterative hard thresholding for compressed sensing

Ollila, Esa; Kim, Hyon-Jung; Koivunen, Visa
2014

Production equilibrium in cooperative smart hybrid renewable minigrids

Rajasekharan, Jayaprakash; Koivunen, Visa
2014

Intertemporal trading economy model for smart grid household energy consumption

Rajasekharan, Jayaprakash; Koivunen, Visa
2014
ISBN: 9781479928927

Learning multidimensional Fourier series with tensor trains

Wahls, Sander; Koivunen, Visa; Poor, H.Vincent; Verhaegen, Michel
2014

Improved MIMO radar channel estimation using spatial coding

Aittomäki, Tuomas; Koivunen, Visa
2013

On the BEP Walls for Soft Decision Based Cooperative Sensing in Cognitive Radios

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa
2013

Impact of Reporting-Channel Coding on the Performance of Distributed Sequential Sensing

Chaudhari, Sachin; Koivunen, Visa
2013

Scheduling of Plug-in Electric Vehicle Battery Charging with Price Prediction

Chis, Adriana; Lundén, Jarmo; Koivunen, Visa
2013

Sparse regularization of tensor decompositions

Kim, Hyon-Jung; Ollila, Esa; Koivunen, Visa
2013
ISSN: 1520-6149

Robust and sparse estimation of tensor decompositions

Kim, Hyon-Jung; Ollila, Esa; Koivunen, Visa; Croux, Christophe
2013

Distributed demand-side optimization with load uncertainty

Lundén, Jarmo; Werner, Stefan; Koivunen, Visa
2013

Synchronization and ranging by scheduled broadcasting

Naseri, Hassan; Salmi, Jussi; Koivunen, Visa
2013
ISBN: 978-1-4799-0356-6
ISSN: 1520-6149

A Sensing Policy Based on Confidence Bounds and a Restless Multi-Armed Bandit Model

Oksanen, Jan; Koivunen, Visa; Poor, H.Vincent
2013

Robust regularized M-estimators of regression parameters and covariance matrix

Ollila, Esa; Kim, Hyon-Jung; Koivunen, Visa
2013

Control symbol based fluctuating target detection in DVB-T2 passive radar systems

Pölönen, Keijo; Koivunen, Visa
2013
ISBN: 978-1-4673-5792-0
ISSN: 1097-5764

Competitive Equilibrium Pricing and Cooperation in Smart Grids with Energy Storage.

Rajasekharan, Jayaprakash; Lunden, Jarmo; Koivunen, Visa
2013

Demand side management through electricity pricing in competitive environments

Rautiainen, Terhi; Lundén, Jarmo; Werner, Stefan; Koivunen, Visa
2013

Target velocity estimation with distributed MIMO radar using multiple pulse repetition frequencies

Aittomaki, Tuomas; Koivunen, Visa
2012

BEP Walls for Cooperative Bayesian Detection with Reporting Channel Errors

Chaudhari, Sachin; Lundén, Jarmo; Koivunen, Visa
2012
ISBN: 978-1-4673-2569-1

Effects of Quantization and Channel Errors on Sequential Detection in Cognitive Radios

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa
2012
ISBN: 978-1-4673-3140-1

Incorporating Array Nonidealities Into Adaptive Capon Beamformer for Source Tracking

Costa, Mário; Koivunen, Visa
2012
ISBN: 978-1-4673-1071-0

Locally optimum and suboptimum detection of complex-valued cyclostationary signals

Lundén, Jarmo; Koivunen, Visa
2012
ISBN: 978-1-4673-3140-1

Efficient computation of effective SINR

Oborina, Alexandra; Henttonen, Tero; Koivunen, Visa; Moisio, Martti
2012
ISBN: 978-1-4673-3140-1

Resource minimization driven spectrum sensing policy

Oksanen, Jan; Lundén, Jarmo; Koivunen, Visa
2012
ISBN: 978-1-4673-0046-9

Design of spectrum sensing policy for multi-user multi-band cognitive radio network

Oksanen, Jan; Lundén, Jarmo; Koivunen, Visa
2012
ISBN: 978-1-4673-3140-1

Detection of DVB-T2 control symbols in passive radar systems

Pölönen, Keijo; Koivunen, Visa
2012
ISBN: 978-1-4673-1070-3
ISSN: 1551-2282

Robust Greedy Algorithms for Compressed Sensing

Razavi, S.Alireza; Ollila, Esa; Koivunen, Visa
2012
ISBN: 978-1-4673-1068-0

Continuous Wave Radar based Vital Sign Estimation: Modeling and Experiments

Salmi, Jussi; Luukkonen, Olli; Koivunen, Visa
2012
ISBN: 978-1-4673-0658-4

Dual-Lag Correlation-Based Feature Detection of OFDM Signals with Cyclic Phase Compensation

Turunen, Vesa; Kosunen, Marko; Koivunen, Visa; Ryynänen, Jussi
2012
ISBN: 978-1-62276-013-8

Resource allocation for target detection in distributed MIMO radars

Aittomaki, T.; Godrich, H.; Poor, H.V.; Koivunen, V.
2011
ISBN: 978-1-4673-0323-1
ISSN: 1058-6393

Widely distributed MIMO radar beamforming for detecting targets with slow RCS fluctuations

Aittomäki, Tuomas; Koivunen, Visa
2011

Ambiguity analysis of isolation - based multi-antenna structures on mobile terminal

Azremi, A.A.H.; Costa, Mario; Koivunen, Visa; Vainikainen, Pertti
2011
ISBN: 978-1-4577-0250-1

BEP Walls for Collaborative Spectrum Sensing

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa
2011
ISBN: 978-1-4577-0538-0

Performance limitations for cooperative spectrum sensing with reporting channel errors

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa
2011

Effects of Quantization on BEP Walls for Soft Decision Based Cooperative Sensing

Chaudhari, Sachin; Lunden, Jarmo; Koivunen, Visa
2011
ISBN: 978-1-4244-9331-3

Model order selection in sensor array responce modeling

Costa, Mario; Richter, Andreas; Koivunen, Visa
2011

On the performance of flexible UL-DL switching point in TDD wireless networks

Jänis, Pekka; Koivunen, Visa; Ribeiro, Cassio B.
2011

Exploiting spatial diversity in multiagent reinforcement learning based spectrum sensing

Lundén, Jarmo; Koivunen, Visa; Kulkarni, Sanjeev R.; Poor, H.Vincent
2011

Reinforcement learning based distributed multiagent sensing policy for cognitive radio networks

Lundén, Jarmo; Koivunen, Visa; Kulkarni, Sanjeev R.; Poor, H.Vincent
2011
ISBN: 978-1-4577-0177-1

Complex-valued signal processing - essential models, tools and statistics

Ollila, Esa; Koivunen, Visa; Poor, H.Vincent
2011

A robust estimator and detector of circularity of complex signals

Ollila, Esa; Koivunen, Visa; Poor, H.Vincent
2011

Reduced complexity space-time coding in single-frequency networks

Pölönen, Keijo; Koivunen, Visa
2011

Cooperative game theory and auctioning for spectrum allocation in cognitive radios

Rajasekharan, Jayaprakash; Eriksson, Jan; Koivunen, Visa
2011

Target detection and positioning using widely distributed MIMO radar with correlated scattering

Aittomäki, Tuomas; Koivunen, Visa
2010

Exploiting correlation in MIMO radar with angular diversity

Aittomäki, Tuomas; Koivunen, Visa
2010

MIMO radar target detection with parametric scattering correlation model

Aittomäki, Tuomas; Koivunen, Visa
2010

Effect on Quantization and Channel Errors on Collaborative Spectrum Sensing

Chaudhari, Sachin; Koivunen, Visa
2010

Low complexity estimation of multiple frequency offsets using optimized training signals

Koivisto, Tommi; Koivunen, Visa
2010

On the implementation of Autocorrelation-based Feature Detector

Kokkinen, Kari; Turunen, Vesa; Kosunen, Marko; Chaudhari, Sachin; Koivunen, Visa; Ryynänen, Jussi
2010

Effective SINR distribution in MIMO OFDM systems

Oborina, Alexandra; Koivunen, Visa; Henttonen, Tero
2010 in Conference Record of the Asilomar Conference on Signals Systems and Computers (IEEE)
ISBN: 9781424497218
ISSN: 1058-6393

Ergodic System Capasity of Mobile MIMO Systems using Adaptive Modulation

Oborina, Alexandra; Moisio, Martti; Koivunen, Visa
2010
ISBN: 978-1-4244-8016-6

Cell Hearability Analysis in UTRAN Long Term Evolution Downlink

Oborina, Alexandra; Henttonen, Tero; Koivunen, Visa
2010

Diversity-Based Spectrum Sensing Policy For Detecting Primary Signals Over Multiple Frequency Bands

Oksanen, Jan; Koivunen, Visa; Lundén, Jarmo; Huttunen, Anu
2010

Reinforcement Learning Method for Energy Efficient Cooperative Multiband Spectrum Sensing

Oksanen, Jan; Lundén, Jarmo; Koivunen, Visa
2010

Characterization of spatial diversity in cooperative spectrum sensing

Oksanen, Jan; Koivunen, Visa; Lundén, Jarmo
2010

Reinforcement Learning-Based Multiband Sensing Policy for Cognitive Radios

Oksanen, Jan; Lundén, Jarmo; Koivunen, Visa
2010

Steering Vector Modeling for Polarimetric Arrays of Arbitrary Geometry

Pereira Da Costa, Mario; Richter, Andreas; Koivunen, Visa
2010

Unifying spherical Harmonic and 2-D Fourier decompositions of the array manifold

Pereira Da Costa, Mario; Richter, Andreas; Koivunen, Visa
2010

Optimal detector for MIMO Radar with Angular Diversity and Correlated Scattering

Aittomäki, Tuomas; Koivunen, Visa
2009

Beampattern Optimization by Minimization of Quartic Polynomial

Aittomäki, Tuomas; Koivunen, Visa
2009

MIMO Radar Direction Finding Performance Using Swerling Models

Aittomäki, Tuomas; Koivunen, Visa
2009

Statistics for complex randon variables revisited

Eriksson, Jan; Ollila, Esa; Koivunen, Visa
2009

OFDM ranging in multipath channels using time-reversal method

Haghparast, Azadeh; Abrudan, Traian; Koivunen, Visa
2009

Interference-Aware Resource Allocation for Device-to-Device Radio Underlaying Cellular Networks

Jänis, Pekka; Koivunen, Visa; Ribeiro, Cassio; Korhonen, J.; Doppler, K.; Hugl, K.
2009
ISBN: 978-1-4244-2517-4
ISSN: 1550-2252

Optimizing spectral shape under general spectrum emission mask constraints

Jänis, Pekka; Koivunen, Visa; Nentwing, Markus
2009

Adjacent channel interference between asynchronous TDD cellular networks

Jänis, Pekka; Koivunen, Visa; Tirkkonen, Olav; Hugl, Klaus
2009

Interference-avoiding MIMO schemes for device-to-device radio underlaying cellular networks

Jänis, Pekka; Koivunen, Visa; Ribeiro, Cássio B.; Doppler, Klaus; Gugl, Klaus
2009

Diversity transmission for correlation-based slot synchronization with noncoherent combining

Koivisto, Tommi; Koivunen, Visa
2009

Impact of frequency and time offsets on cooperative multi-user MIMO-OFDM systems

Koivisto, Tommi; Koivunen, Visa
2009

Adjusting the generalized likelihood ratio test of circularity robust to non-normality

Koivunen, Visa
2009

FPGA implementation of autocorrelation-based feature detector for cognitive radio

Kokkinen, Kari; Turunen, Vesa; Kosunen, Marko; Chaudhari, Sachin; Koivunen, Visa; Ryynänen, Jussi
2009
ISBN: 9781424443109

Azimuth, Elevation, and Polarization Estimation for Arbitrary Polarimetric Array Configurations

Pereira da Costa, Mario; Richer, Andreas; Koivunen, Visa
2009

Low Complexity Azimuth and Elevation Estimation for Arbitrary Array Configurations

Pereira Da Costa, Mario; Richter, Andreas; Koivunen, Visa
2009

Sequential Unfolding SVD for Low Rank Orthogonal Tensor Approximation,"

salmi, Jussi; Richter, Andreas; Koivunen, Visa
2009

Angular Doppler Characterization in Indoor Channels

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2009

Distributed parameter estimation with selective cooperation

Werner, Stefan; Huang, Yih-Fang; de Campos, Marcello L.R.; Koivunen, Visa
2009

Efficient Riemannian algorithms for optimization under unitary matrix constraint

Abrudan, Traian E.; Eriksson, Jan; Koivunen, Visa
2008

Efficient Line Search Methods for Riemannian Optimization Under Unitary Matrix Constraint

Abrudan, Traian E.; Eriksson, Jan; Koivunen, Visa
2008

Collaborative Autocorrelation-Based Spectrum Sensing of OFDM signals in Cognitive Radios

Chaudhari, Sachin; Lundén, Jarmo; Koivunen, Visa
2008

Distributed Autocorrelation-Based Sequential Detection of OFDM Signals in Cognitive Radios

Chaudhari, Sachin; Koivunen, Visa; Poor, Vincent H.
2008

Nonparametric cyclic correlation based detection for cognitive radio systems

Lundén, Jarmo; Kassam, Saleem A.; Koivunen, Visa
2008

Censoring for collaborative spectrum sensing in cognitive radios

Lundén, Jarmo; Koivunen, Visa; Huttunen, Anu; Poor, Vincent H.
2008

MIMO performance evaluation in UTRAN Long Term Evolution downlink

Oborina, Alexandra; Moisio, M.; Henttonen, T.; Pernilä, E.; Koivunen, Visa
2008

On the Cramer-Rao bound for the constrained and unconstrained complex parameters

Ollila, Esa; Koivunen, Visa; Eriksson, Jan
2008

Polynomial Rooting-based Direction Finding for Arbitrary Array Configurations

Pereira da Costa, Mário Jorge; Richter, Andreas; Belloni, Fábio; Koivunen, Visa
2008

SINR analysis of opportunistic MIMO-SDMA downlink systems with linear combining

Pun, M.O.; Koivunen, Visa; Poor, H.V.
2008

Detecting Specular Propagation Paths in the Presence of Distributed Scattering in Angle and Delay Domains

Ribeiro, Cássio; Richter, Andreas; Koivunen, Visa
2008

Tensor decomposition of MIMO channel sounding measurements and its applications

Richter, Andreas; Salmi, Jussi; Koivunen, Visa
2008

ML estimation of covariance matrix for tensor valued signals in noise

Richter, Andreas; Salmi, Jussi; Koivunen, Visa
2008

Tracking of MIMO propagation parameters under spatio-temporal scattering model

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2008

Decentralized set-membership adaptive estimation for clustered sensor networks

Werner, Stefan; Mohammed, Mobien; Huoang, Y.H.; Koivunen, Visa
2008

E_cient line search methods for riemannian optimization under unitarity matrix constraint

Abrudan, T.; Eriksson, Jan; Koivunen, V.
2007

Low-Complexity Method for Transmit Beamforming in MIMO Radars

Aittomäki, Tuomas; Koivunen, Visa
2007

Signal covariance matrix optimization for transmit beamforming in MIMO radars

Aittomäki, Tuomas; Koivunen, Visa
2007
ISBN: 978-1-4244-2109-1

Spectrum sensing in cognitive radios based on multiple cyclic frequencies

Lundén, Jarmo; Koivunen, Visa; Huttunen, Anu; Poor, H.Vincent
2007

Scaled conjugate gradient method for radar pulse modulation estimation

Lundén, Jarmo; Koivunen, Visa
2007

Sparse equalization in high data rate WCDMA systems

Melvasalo, Maarit; Jänis, Pekka; Koivunen, Visa
2007
ISBN: 1-4244-0955-1

Opportunistic scheduling and beamforming for MIMO-SDMA downlink systems with linear combining

Pun, M.O.; Koivunen, Visa; Poor, H.Vincent
2007

Iterative Interpolation Method for Multiband-OFDM Channel Estimation

Pölönen, Keijo; Koivunen, Visa
2007

Search for Specular Propagation Paths in the Presence of Distributed Scattering in Angle and Delay Domains

Ribeiro, Cássio B.; Richter, Andreas; Koivunen, Visa
2007

Signal Processing Perspectives to Radio Channel Modelling

Richter, Andreas; Salmi, Jussi; Koivunen, Visa
2007

Carrier frequency synchronization for mobile television receivers

Roman, Timo; Koivunen, Visa
2007

State-Space Modeling and Propagation Parameter Tracking: Multitarget tracking based approach

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2007

Blind Estimation of Multiple Carrier Frequency Offsets

Yu, Yuanning; Petropulu, Athina P.; Poor, H.Vincent; Koivunen, Visa
2007

Extension of root-MUSIC to non-ULA Array Configurations

Belloni, Fabio; Richter, Andreas; Koivunen, Visa
2006

Avoiding bias in circular arrays using optimal beampattern shaping and EADF

Belloni, Fabio; Richter, Andreas; Koivunen, Visa
2006

Performance of root-MUSIC algorithm using Real-Word Arrays

Belloni, Fabio; Richter, Andreas; Koivunen, Visa
2006

Adaptive estimation of the strong uncorrelating transform with applications to subspace tracking

Douglas, S.C.; Eriksson, J.; Koivunen, V.
2006

The strong uncorrelating projection approximation (supa) algorithm for decorrelating complex non-circular data

Douglas, S.C.; Eriksson, J.; Koivunen, V.
2006

Fixed-point complex ICA algorithms for the blind separation of sources using their real or imaginary components

Douglas, Scott C.; Eriksson, Jan; Koivunen, Visa
2006
ISBN: 3-540-32630-8
ISSN: 0302-9743

Equivariant algorithms for estimating the strong-uncorrelation transform in complex independent component analysis

Douglas, Scott C.; Eriksson, Jan; Koivunen, Visa
2006
ISBN: 3-540-32630-8
ISSN: 0302-9743

Robust estimation of radar pulse modulation

Lundén, Jarmo; Koivunen, Visa
2006

Semi-blind channel estimation in HSDPA systems

Melvasalo, Maarit; Koivunen, Visa
2006

MMSE equalizer and chip level inter-antenna interference canceler for HSDPA MIMO systems

Melvasalo, Maarit; Jänis, Pekka; Koivunen, Visa
2006
ISBN: 0-7803-9392-9
ISSN: 1550-2252

Joint maximum likelihood estimation of angular and time-delay MIMO propagation parameters

Ribeiro, Cássio B.; Richter, Andreas; Koivunen, Visa
2006

DoA and Polarization Estimation using Arbitrary Polarimetric Array Configurations

Richter, Andreas; Belloni, Fabio; Koivunen, Visa
2006

On Distributed Scattering in Radio Channels and Its Contribution to MIMO Channel Capacity

Richter, Andreas; Salmi, Jussi; Koivunen, Visa
2006

An Algorithm for Estimation and Tracking of Distributed Diffuse Scattering in Mobile Radio Channels

Richter, Andreas; Salmi, Jussi; Koivunen, Visa
2006

Blind CFO estimation for OFDM with constant modulus constellations: performance bounds and algorithms

Roman, Timo; Richter, Andreas; Koivunen, Visa
2006

Smart antennas: overview of research in SMARAD

Räisänen, Antti V.; Vainikainen, Pertti; Tretyakov, Sergei A.; Koivunen, Visa; Laakso, Timo
2006

Enhanced tracking of radio propagation path parameters using state-space modeling

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2006

MIMO propagation parameter tracking using EKF

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2006

Propagation parameter tracking using variable state dimension Kalman filter

Salmi, Jussi; Richter, Andreas; Enescu, Mihai; Vainikainen, Pertti; Koivunen, Visa
2006
ISBN: 0-7803-9392-9
ISSN: 1550-2252

Empirical characteristic function based estimation of multiple scattering channel parameters

Salo, Jari; Eriksson, Jan; Koivunen, Visa; Vainikainen, Pertti
2006

Combined frequency and time domain channel estimation in mobile MIMO-OFDM systems

Werner, Stefan; Enescu, Mihai; Koivunen, Visa
2006

Optimization under unitary matrix constraint using approximate matrix exponential

Abrudan, Traian; Eriksson, Jan; Koivunen, Visa
2005

Reducing bias beamspace methods for uniform circular array

Belloni, Fabio; Koivunen, Visa
2005

Analysis of Beamspace Transform on Uniform Circular Array

Belloni, Fabio; Koivunen, Visa
2005

Reducing Excess Variance in Beamspace Methods for Uniform Circular Array

Belloni, Fabio; Richter, Andreas; Koivunen, Visa
2005

One-Step Code-Phase Tracking Method for Long-Code Navigation Systems

Delfino, Eugenio; Sirbu, Marius; Koivunen, Visa
2005

Estimating the fading coefficient in mobile OFDM systems using state-space model

Enescu, Mihai; Koivunen, Visa
2005

Complex ICA for circular and non-circular sources

Eriksson, Jan; Seppola, Anne-Mari; Koivunen, Visa
2005

Blind Separation of a Class of Nonlinear ICA Models

Eriksson, Jan; Koivunen, Visa
2005

Classifying Pulse Compression Radar Waveforms Using Time-Frequency Distributions

Lundén, Jarmo; Koivunen, Visa; Terho, Liisa
2005

Waveform recognition in pulse compression radar systems

Lundén, Jarmo; Terho, Liisa; Koivunen, Visa
2005

Low complexity space-time MMSE equalization in WCDMA systems

Melvasalo, Maarit; Jänis, Pekka; Koivunen, Visa
2005

Propagation parameter estimation in MIMO systems using mixture of angular distributions model

Ribeirio, Cassio; Ollila, Esa; Koivunen, Visa
2005

Recent Advances in Modeling and Estimation of Local and Distributed Scatting of Mobile Radio Channels

Ribeiro, Cassio; Richter, Andreas; Koivunen, Visa
2005

Cramér-Rao Bound for Angular Propagation Parameter Estimation in MIMO Systems

Ribeiro, Cassio; Ollila, Esa; Koivunen, Visa
2005

Stochastic Maximum Likelihood Estimation of Angle- and Delay-Domain Propagation Parameters

Ribeiro, Cassio; Richter, Andreas; Koivunen, Visa
2005

State-Space Approach to Propagation Path Parameter Estimation and Tracking

Richter, Andreas; Enescu, Mihai; Koivunen, Visa
2005

Recent advances in radio channel parameter estimation from channel sounding measurements,

Richter, Andreas; Koivunen, Visa
2005

Subspace method for blind CFO estimation for OFDM systems with constant modulus constellations

Roman, Timo; Koivunen, Visa
2005

One-Shot subspace based method for blind CFO estimation for OFDM

Roman, Timo; Koivunen, Visa
2005

Separation on Complex Signals Using Characteristic Functions

Seppola, Anne-Mari; Eriksson, Jan; Koivunen, Visa
2005

Low-complexity time-doman channel estimation for mobile wireless OFDM systems

Werner, Stefan; Enescu, Mihai; Koivunen, Visa
2005

A Blind equalizer for MIMO OFDM Systems

Abrudan, Traian; Hjørungnes, Are; Koivunen, Visa
2004

A Block-Toeplitz VCMA Equalizer for MIMO-OFDM Systems

Abrudan, Traian; Sirbu, Marius; Koivunen, Visa
2004

Recursive Householder-based Space-time Processor for Jammer Mitigation in Navigation Receivers

Aittomäki, Tuomas; Koivunen, Visa
2004

On the estimation of correlated noise statistics in a class of state-space models

Enescu, Mihai; Koivunen, Visa
2004

Parameter estimation of measured channels in mobile MIMO OFDM system

Enescu, Mihai; Herdin, Markus; Roman, Timo; Koivunen, Visa
2004

Complex-Valued ICA Using Second Order Statistics

Eriksson, Jan; Koivunen, Visa
2004

delta-signed Correlation Method for Noisy Channel Identification

Järvinen, Jussi; Koivunen, Visa
2004

Time-Varying Carrier Offset Tracking in OFDM Systems Using Particle Filtering

Nyblom, Tuomas; Roman, Timo; Enescu, Mihai; Koivunen, Visa
2004

Generalized Complex Elliptical Distributions

Ollila, Esa; Koivunen, Visa
2004

Stochastic maximum likelihood method for propagation parameter estimation

Ribeiro, Cassio; Ollila, Esa; Koivunen, Visa
2004

Performance bound for blind CFO estimation in OFDM with real-valued constellations

Roman, Timo; Visuri, Samuli; Koivunen, Visa
2004

Blind CFO Estimation in OFDM Systems Using Diagonality Criterion

Roman, Timo; Koivunen, Visa
2004

A Novel Method for Time-Delay Acquisition in Satellite Navigation Systems

Sirbu, Marius; Delfino, Eugenio; Koivunen, Visa
2004

MMSE Delay Acquisition of Pulse-Shaped Signals in Satellite Navigation Systems

Sirbu, Marius; Delfino, Eugenio; Koivunen, Visa
2004

Householder based Low-Rank Space-time Processor For Anti-jamming Navigation Receivers

Werner, Stefan; With, Matias; Koivunen, Visa
2004
ISBN: 978-320-0001-65-7

Householder-based Anti-jamming Navigation Receiver Structures

With, Matias; Werner, Stefan; Koivunen, Visa
2004

Blind Multi-user Receiver for MIMO-OFDM Systems

Abrudan, Traian; Sirbu, Marius; Koivunen, Visa
2003

High-resolution Direction Finding using Uniform Circular Array

Belloni, Fabio; Koivunen, Visa
2003

Unitary Root-Music Technique for Uniform Circular Array

Belloni, Fabio; Koivunen, Visa
2003

Channel estimation and tracking in spatially correlated MIMO OFDM system

Enescu, Mihai; Roman, Timo; Koivunen, Visa
2003

Identifiability and Separability of Linear Ica Models Revisited

Eriksson, Jan; Koivunen, Visa
2003

Tracking Mobile Radios Using Antenna Arrays and Particle Filters

Oja, Eino; Koivunen, Visa
2003

Influence functions for array covariance matrix estimators

Ollila, Esa; Koivunen, Visa
2003

Robust Space-Time Covariance Estimation for Smart Antennas

Ollila, Esa; Quattropani, Luca; Koivunen, Visa
2003

Robust space-time scatter matrix estimator for broadband antenna arrays

Ollila, Esa; Koivunen, Visa
2003

Robust Antenna Array Processing Using M-estimators of Pseudo-Covariance

Ollila, Esa; Koivunen, Visa
2003

Time-domain method for tracking dispersive channels in MIMO OFDM systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2003

Joint Time-Domain Tracking of Channel and Frequency Offset for OFDM systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2003

Time-Domain Method for Tracking Dispersive Channels in OFDM Systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2003

Recursive Estimation of Time-Varying Channel and Frequency Offset in MIMO OFDM Systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2003

Time-Doman method for tracking dispersive in MIMO OFDM systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2003

One-Step Refinement Method for Joint Channel Estimation and Timing Acquisition in OFDM Transmission

Sirbu, Marius; Koivunen, Visa
2003

Low complexity synchronization method for uplink long-cpde DS/CDMA

Sirbu, Marius; Koivunen, Visa
2003

Modulation Classification in Fading Multipath Channel

Venäläinen, Juha; Terho, Liisa; Koivunen, Visa
2003

Resolving Ambiguities in Subspace-Based Blind Receiver for Mimo Channels

Visuri, Samuli; Koivunen, Visa
2003

Anti-jamming receivers for satellite navigation systems

With, Matias; Werner, Stefan; Aittomäki, Tuomas; Koivunen, Visa
2003

Resursive Estimation of Noise Statistics in Kalman Filter Based MIMO Equalization

Enescu, Mihai; Sirbu, Marius; Koivunen, Visa
2002

On the estimation of state transition matrix and noise statistics in state-space models

Enescu, Mihai; Koivunen, Visa
2002

Time-Varying Channel Tracking for Space-Time Block Coding

Enescu, Mihai; Koivunen, Visa
2002

Kalman smoothing based channel estimation for space-time block coding

Enescu, Mihai; Koivunen, Visa
2002

Blind Identifiability of Class of Nonlinear Instantaneous ICA Models

Eriksson, Jan; Koivunen, Visa
2002

Blind Channel Estimation for Multicode Transmission in Long Code CDMA Systems

Melvasalo, Maarit; Koivunen, Visa
2002

Blind Channel Estimation in Multicode CDMA System with Antenna Array

Melvasalo, Maarit; Koivunen, Visa
2002

Propagation delay estimation in asynchronous DS/CDMA using multiple antennas

Sirbu, Marius; Koivunen, Visa
2002

Multichannel stochastic gradient method for adaptive equalization in uplink asynchronous DS/CDMA

Sirbu, Marius; Koivunen, Visa
2002

Channel estimation and tracking in uplink asynchronous DS/CDMA using multiple antennas

Sirbu, Marius; Koivunen, Visa
2002

Modulation Recognition System for Frequency Selective Channels

Venäläinen, Juha; Terho, Liisa; Koivunen, Visa
2002

Recursive Semi-Blind Equalizer for Time Varying MIMO Channels

Enescu, M.; Sirbu, M.; Koivunen, V.
2001

Recursive estimator for Blind MIMO equalization via BSS and fractional sampling

Enescu, Mihai; Zhang, Yinglu; Kassam, S.A.; Koivunen, Visa
2001

Novel Characteristic Function Based Criteria For Ica

Eriksson, Jan; Kankainen, Annaliisa; Koivunen, Visa
2001

Blind Separation of Communication Signals Using Pearson System Based Method

Karvanen, Juha; Koivunen, Visa
2001

Blind Separation using Absolute Moments Based Adaptive Estimating Function

Karvanen, Juha; Koivunen, Visa
2001

On the Feasibility of Blind Equalization for EDGE Systems

Sirbu, Marius; Mannerkoski, Jukka; Zhang, Yinglu; Koivunen, Visa
2001

Real-Time Semi-Blind Equalization of Time Varying Channels

Sirbu, Marius; Enescu, Mihai; Koivunen, Visa
2001

Estimating Noise Statistics in Adaptive Semiblind Equalization

Sirbu, Marius; Enescu, Mihai; Koivunen, Visa
2001

Feasibility of fractionally spaced blind equalization with GMSK modulated signals

Sirbu, M.; Mannerkoski, J.; Zhang, Y.; Koivunen, V.
2001

Compensation of Frequency-Selective I/Q Imbalances in Wideband Receivers: Models and Algorithms

Valkama, Mikko; Renfors, Markku; Koivunen, Visa
2001

Direction of Arrival Estimation in Nonstandard Conditions Using Nonparametric Statistics

Visuri, Samuli; Koivunen, Visa; Terho, Liisa
2001

Blind channel indentification using robust subspace estimation

Visuri, S.; Oja, H.; Koivunen, V.
2001

Blind Equalization for GSM Systems via Source Separation

Zhang, Y.; Mannerkoski, J.; Koivunen, V.; Kassam, S.A.
2001

Tracking Time-Varying Mixig System in Blind Separation

Enescu, M.; Koivunen, V.
2000

Recursive estimator for separation of arbitrarily kurtotic sources

Enescu, M.; Koivunen, V.
2000

Source Distribution Adaptive Maximum Likelihood Estimation of ICA Model

Eriksson, J.; Karvanen, J.; Koivunen, V.
2000

Pearson System based Method for Blind Separation

Karvanen, J.; Eriksson, J.; Koivunen, V.
2000

Maximum likelihood estimation of ICA model for wide class of source distributions

Karvanen, J.; Eriksson, J.; Koivunen, V.
2000

Sensitivity of SIMO blind equalizers to the channel precursor magnitude

Mannerkoski, J.; Koivunen, V.
2000

Are Blind Equalizers Assuming White Data Applicable to Block Encoded Sequences?

Mannerkoski, J.; Koivunen, V.
2000

Classification of MFSK Modulated Signals Using the Mean of Comlex Envelope

Roisti, A.; Koivunen, V.
2000

Blind Source Separation Based i/Q Imbalance Compensation

Valkama, M.; Renfors, M.; Koivunen, V.
2000

On the Performance of Interference Caceller Based I/Q Imbalance Compensation

Valkama, M.; Renfors, M.; Koivunen, V.
2000

BSS Based i/Q Imbalance Compensation in the Presence of Timing Errors

Valkama, M.; Renfors, M.; Koivunen, V.
2000

Robust Subspace DOA Estimation for Wireless Communications

Visuri, S.; Koivunen, V.; Oja, H.
2000

Nonparametric Statistics for Subspace Based Frequency Estimation

Visuri, S.; Oja, H.; Koivunen, V.
2000

Nonparametric Statistics for DOA Estimation in the Presence of Multipath

Visuri, S.; Oja, H.; Koivunen, V.
2000

Predictor - Corrector Structure for Real Time Blind Separation from Noisy Mixtures

Koivunen, V.; Oja, E.
1999

Blind Separation from e-Contaminated Mixtures

Koivunen, V.; Pajunen, P.; Karhunen, J.; Oja, E.
1998

Non-refereed scientific articles

Unrefereed journal articles

Introduction to the Issue on Structured Matrices in Signal and Data Processing

Wakin, Michael B.; Gribonval, Remi; Koivunen, Visa; Romberg, Justin; Wright, John
2016 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1932-4553

Scientific books (monographs)

Book (editor)

Issue on Structured Matrices in Signal and Data Processing

Wakin, Michael B.; Gribonval, Remi; Koivunen, Visa; Romberg, Justin; Wright, John
2016 in IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1932-4553

Publications intended for professional communities

Published development or research report

Conjugate Gradient Algorithm for Optimization Under Unitary Matrix Constraint

Abrudan, Traian; Eriksson, Jan; Koivunen, Visa
2008

Nonparametric Tests of Circularity of Complex-Valued Random Vectors

Ollila, Esa; Koivunen, Visa
2008

Wireless LANs with High Throughput in Interference-Limited Environments - Project Summary and Outcomes

Richter, Andreas; Tufvesson, Fredrik; Salvo Rossi, Pierluigi; Haneda, Katsuyuki; Koivunen, Jukka; Kolmonen, Veli-Matti; Salmi, Jussi; Almers, Peter; Hammarberg, Peter; Pölönen, Keijo; Suvikunnas, Pasi; Molisch, Andreas F.; Edfors, Ove; Koivunen, Visa; Vainikainen, Pertti; Müller, Ralf R.
2008

Tracking of Double Directional Radio Propagation Path Parameters with EKF

Salmi, Jussi; Richter, Andreas; Koivunen, Visa
2008

DoA Estimation via Manifold Separation for Arbitrary Array Structures: Error Analysis

Belloni, Fabio; Richter, Andreas; Koivunen, Visa
2006

Low complexity semi-blind channel estimation in HSDPA systems

Melvasalo, Maarit; Jänis, Pekka; Koivunen, Visa
2006

Stochastic ML method for propagation parameter estimation using mixture of angular distribution models

Ribeiro, Cassio; Ollila, Esa; Koivunen, Visa
2005

A State Space Approach to Propagation Path Parameter Estimation and Tracking

Richter, Andreas; Enescu, Mihai; Koivunen, Visa
2005

Blind frequency synchronixation for OFDM with real valued modulations

Roman, Timo; Visuri, Samuli; Koivunen, Visa
2005

Convergence Analysis of a Blind Receiver for MIMO-OFDM Systems

Abrudan, Traian; Koivunen, Visa
2004

Beamspace Transform for UCA: Error Analysis and Bias Reduction

Belloni, Fabio; Koivunen, Visa
2004

Identifiability, Separability and Uniqueness of Complex ICA Models

Eriksson, Jan; Koivunen, Visa
2004

Joint Time-Domain Tracking of Channel and Frequency Offset for MIMO OFDM Systems

Roman, Timo; Enescu, Mihai; Koivunen, Visa
2003

Deley estimation in long-code asynchronous DS/CDMA systems using multiple antennas

Sirbu, Marius; Koivunen, Visa
2003

Adaptive Equalization of Time-Varying MIMO Channels

Enescu, Mihai; Sirbu, Marius; Koivunen, Visa
2002

Audiovisual material, ICT software

ICT programs or applications

Software for Maximum Likelihood Blind Source Separation using the EGLD Model

Eriksson, J.; Karvanen, J.; Koivunen, V.
2000

Software for Blind Source Separation using the Pearson System

Karvanen, J.; Eriksson, J.; Koivunen, V.
2000

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