Esa Ollila

3.1k total citations · 1 hit paper
93 papers, 1.8k citations indexed

About

Esa Ollila is a scholar working on Signal Processing, Statistics and Probability and Artificial Intelligence. According to data from OpenAlex, Esa Ollila has authored 93 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 52 papers in Signal Processing, 32 papers in Statistics and Probability and 21 papers in Artificial Intelligence. Recurrent topics in Esa Ollila's work include Blind Source Separation Techniques (30 papers), Direction-of-Arrival Estimation Techniques (28 papers) and Advanced Statistical Methods and Models (27 papers). Esa Ollila is often cited by papers focused on Blind Source Separation Techniques (30 papers), Direction-of-Arrival Estimation Techniques (28 papers) and Advanced Statistical Methods and Models (27 papers). Esa Ollila collaborates with scholars based in Finland, United States and France. Esa Ollila's co-authors include Visa Koivunen, David E. Tyler, H. Vincent Poor, Hannu Oja, Jan Eriksson, Sergiy A. Vorobyov, Klaus Nordhausen, Hyon‐Jung Kim, V. Koivunen and Christophe Croux and has published in prestigious journals such as Journal of the American Statistical Association, NeuroImage and IEEE Transactions on Geoscience and Remote Sensing.

In The Last Decade

Esa Ollila

86 papers receiving 1.7k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Complex Elliptically Symmetric Distributions: Survey, New Results and Applications

2012 269 citations Esa Ollila, David E. Tyler et al. IEEE Transactions on Signal Processing profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Esa Ollila Finland	23	872	456	421	347	282	93	1.8k
Frédéric Pascal France	22	493 0.6×	911 2.0×	268 0.6×	287 0.8×	575 2.0×	91	2.0k
Erçan E. Kuruoğlu Italy	21	387 0.4×	277 0.6×	105 0.2×	485 1.4×	262 0.9×	149	1.9k
Philippe Forster France	19	754 0.9×	749 1.6×	146 0.3×	210 0.6×	201 0.7×	83	1.4k
Peter J. Schreier Germany	19	1.0k 1.2×	338 0.7×	119 0.3×	430 1.2×	491 1.7×	105	2.4k
Antonio Napolitano Italy	20	914 1.0×	349 0.8×	67 0.2×	303 0.9×	250 0.9×	98	1.9k
Yngve Selén Sweden	18	629 0.7×	496 1.1×	104 0.2×	274 0.8×	352 1.2×	38	2.4k
Philippe Loubaton France	26	1.7k 2.0×	208 0.5×	252 0.6×	382 1.1×	627 2.2×	99	2.6k
Javier Vía Spain	20	738 0.8×	320 0.7×	48 0.1×	305 0.9×	376 1.3×	106	1.6k
Cédric Demeure France	3	462 0.5×	326 0.7×	76 0.2×	259 0.7×	196 0.7×	4	1.4k
Nikolaos Galatsanos Greece	20	302 0.3×	193 0.4×	63 0.1×	496 1.4×	290 1.0×	53	2.0k

Countries citing papers authored by Esa Ollila

Since Specialization

Citations

This map shows the geographic impact of Esa Ollila's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Esa Ollila with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Esa Ollila more than expected).

Fields of papers citing papers by Esa Ollila

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Esa Ollila. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Esa Ollila. The network helps show where Esa Ollila may publish in the future.

Co-authorship network of co-authors of Esa Ollila

This figure shows the co-authorship network connecting the top 25 collaborators of Esa Ollila. A scholar is included among the top collaborators of Esa Ollila based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Esa Ollila. Esa Ollila is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ollila, Esa, et al.. (2025). Activity Detection for Massive Random Access Using Covariance-Based Matching Pursuit. IEEE Transactions on Vehicular Technology. 74(11). 17292–17303.

Vorobyov, Sergiy A., et al.. (2025). Robust Hybrid Beamforming for Integrated Sensing and Communications via Learned Optimization. Aaltodoc (Aalto University). 1–5.

Mecklenbräuker, Christoph F., Peter Gerstoft, Esa Ollila, & Yongsung Park. (2024). Robust and sparse M-estimation of DOA. Signal Processing. 220. 109461–109461. 10 indexed citations

Ollila, Esa, et al.. (2024). Graph Convolutional Neural Networks Sensitivity Under Probabilistic Error Model. IEEE Transactions on Signal and Information Processing over Networks. 10. 788–803. 1 indexed citations

Ginolhac, Guillaume, et al.. (2023). New Robust Sparse Convolutional Coding Inversion Algorithm for Ground Penetrating Radar Images. IEEE Transactions on Geoscience and Remote Sensing. 61. 1–14. 6 indexed citations

Miettinen, J.K., et al.. (2021). Graph Signal Processing Meets Blind Source Separation. IEEE Transactions on Signal Processing. 69. 2585–2599. 18 indexed citations

Ollila, Esa, et al.. (2021). On the variability of the sample covariance matrix under complex elliptical distributions. arXiv (Cornell University). 3 indexed citations

Pascal, Frédéric, Esa Ollila, & Daniel P. Palomar. (2021). Improved estimation of the degree of freedom parameter of multivariate $t$-distribution. 2021 29th European Signal Processing Conference (EUSIPCO). 860–864. 3 indexed citations

Ollila, Esa, et al.. (2020). Data-Adaptive Similarity Measures for B-mode Ultrasound Images Using Robust Noise Models. IEEE Journal of Selected Topics in Signal Processing. 14(6). 1244–1254. 1 indexed citations

10.

Miettinen, J.K., Sergiy A. Vorobyov, & Esa Ollila. (2018). Graph Error Effect in Graph Signal Processing. 4164–4168. 7 indexed citations

11.

Nordhausen, Klaus, Hannu Oja, & Esa Ollila. (2016). Robust Independent Component Analysis Based on Two Scatter Matrices. Austrian Journal of Statistics. 37(1). 9 indexed citations

12.

Kim, Hyon‐Jung, Esa Ollila, & Visa Koivunen. (2013). Sparse regularization of tensor decompositions. 3836–3840. 7 indexed citations

13.

Remes, Jukka, Ahmed Abou Elseoud, Esa Ollila, et al.. (2013). On applicability of PCA, voxel-wise variance normalization and dimensionality assumptions for sliding temporal window sICA in resting-state fMRI. Magnetic Resonance Imaging. 31(8). 1338–1348. 2 indexed citations

14.

Nordhausen, Klaus, Hannu Oja, & Esa Ollila. (2011). Multivariate Models and the First Four Moments. 267–287. 14 indexed citations

15.

Eriksson, Jan, Esa Ollila, & Visa Koivunen. (2009). Statistics for complex random variables revisited. 3565–3568. 25 indexed citations

16.

Taskinen, Sara, Christophe Croux, Annaliisa Kankainen, Esa Ollila, & Hannu Oja. (2005). Influence functions and efficiencies of the canonical correlation and vector estimates based on scatter and shape matrices. Journal of Multivariate Analysis. 97(2). 359–384. 37 indexed citations

17.

Ollila, Esa, Christophe Croux, & Hannu Oja. (2004). INFLUENCE FUNCTION AND ASYMPTOTIC EFFICIENCY OF THE AFFINE EQUIVARIANT RANK COVARIANCE MATRIX. Statistica Sinica. 14(1). 297–316. 9 indexed citations

18.

Ollila, Esa & Visa Koivunen. (2004). Robust antenna array processing using M-estimators of pseudo-covariance. 2659–2663. 52 indexed citations

19.

Ollila, Esa & Visa Koivunen. (2003). Influence functions for array covariance matrix estimators. 11 indexed citations

20.

Ollila, Esa, Hannu Oja, & Christophe Croux. (2003). The affine equivariant sign covariance matrix: asymptotic behavior and efficiencies. Journal of Multivariate Analysis. 87(2). 328–355. 18 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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