Athanasios A. Rontogiannis

112 papers A* 1B 5C 5Misc 8Journal 52Unranked 41

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	An Approximate Deep Equilibrium Scheme for Trainable Nonnegative Matrix Factorization. DSP Foivos Ntoulas-Panagiotopoulos, Athanasios A. Rontogiannis
2024	C	`conf`	Hyperspectral Image Denoising by Jointly Using Variational Bayes Matrix Factorization and Deep Image Prior. IGARSS Loukas Sfountouris, Athanasios A. Rontogiannis
2024	C	`conf`	Robust Rank-Revealing Block-Term Decomposition and Hyperspectral Image Denoising. IGARSS Eleftherios Kofidis, Athanasios A. Rontogiannis
2023	J	`jnl`	Online rank-revealing block-term tensor decomposition. Signal Process. Athanasios A. Rontogiannis, Eleftherios Kofidis, Paris V. Giampouras
2022	—	`conf`	A Projected Newton-type Algorithm for Rank - revealing Nonnegative Block - Term Tensor Decomposition. EUSIPCO Eleftherios Kofidis, Paris V. Giampouras, Athanasios A. Rontogiannis
2022	J	`jnl`	Block-Term Tensor Decomposition Model Selection and Computation: The Bayesian Way. IEEE Trans. Signal Process. Paris V. Giampouras, Athanasios A. Rontogiannis, Eleftherios Kofidis
2021	—	`conf`	A Bayesian Approach to Block-Term Tensor Decomposition Model Selection and Computation. EUSIPCO Paris V. Giampouras, Athanasios A. Rontogiannis, Eleftherios Kofidis
2021	J	`jnl`	A Bayesian Approach to Block-Term Tensor Decomposition Model Selection and Computation. CoRR Paris V. Giampouras, Athanasios A. Rontogiannis, Eleftherios Kofidis
2021	J	`jnl`	Block-Term Tensor Decomposition: Model Selection and Computation. IEEE J. Sel. Top. Signal Process. Athanasios A. Rontogiannis, Eleftherios Kofidis, Paris V. Giampouras
2021	—	`conf`	Online Rank-Revealing Block-Term Tensor Decomposition. ACSCC Athanasios A. Rontogiannis, Eleftherios Kofidis, Paris V. Giampouras
2021	J	`jnl`	Online Rank-Revealing Block-Term Tensor Decomposition. CoRR Athanasios A. Rontogiannis, Eleftherios Kofidis, Paris V. Giampouras
2021	Misc	`conf`	Rank-Revealing Block-Term Decomposition for Tensor Completion. ICASSP Athanasios A. Rontogiannis, Paris V. Giampouras, Eleftherios Kofidis
2020	A*	`conf`	A novel variational form of the Schatten-$p$ quasi-norm. NeurIPS Paris Giampouras, René Vidal, Athanasios A. Rontogiannis, Benjamin D. Haeffele
2020	J	`jnl`	A novel variational form of the Schatten-p quasi-norm. CoRR Paris Giampouras, René Vidal, Athanasios A. Rontogiannis, Benjamin D. Haeffele
2020	—	`conf`	Block-Term Tensor Decomposition: Model Selection and Computation. EUSIPCO Athanasios A. Rontogiannis, Eleftherios Kofidis, Paris V. Giampouras
2020	J	`jnl`	Block-Term Tensor Decomposition: Model Selection and Computation. CoRR Athanasios A. Rontogiannis, Eleftherios Kofidis, Paris V. Giampouras
2020	J	`jnl`	Online Reweighted Least Squares Robust PCA. IEEE Signal Process. Lett. Athanasios A. Rontogiannis, Paris V. Giampouras, Konstantinos D. Koutroumbas
2019	Misc	`conf`	A Projected Newton-type Algorithm for Nonnegative Matrix Factorization with Model Order Selection. ICASSP Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2019	J	`jnl`	Alternating Iteratively Reweighted Least Squares Minimization for Low-Rank Matrix Factorization. IEEE Trans. Signal Process. Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2018	J	`jnl`	A Computationally Efficient Tensor Completion Algorithm. IEEE Signal Process. Lett. Ioannis C. Tsaknakis, Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2018	—	`conf`	A Novel Online Generalized Possibilistic Clustering Algorithm for Big Data Processing. EUSIPCO Spyridoula D. Xenaki, Konstantinos D. Koutroumbas, Athanasios A. Rontogiannis
2018	—	`conf`	Generalized Adaptive Possibilistic C-Means Clustering Algorithm. SETN Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2018	J	`jnl`	On the Convergence of the Sparse Possibilistic C-Means Algorithm. IEEE Trans. Fuzzy Syst. Konstantinos D. Koutroumbas, Spyridoula D. Xenaki, Athanasios A. Rontogiannis
2018	B	`conf`	Robust PCA via Alternating Iteratively Reweighted Low-Rank Matrix Factorization. ICIP Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2017	J	`jnl`	Alternating Iteratively Reweighted Minimization Algorithms for Low-Rank Matrix Factorization. CoRR Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2017	J	`jnl`	Distributed Blind Hyperspectral Unmixing via Joint Sparsity and Low-Rank Constrained Non-Negative Matrix Factorization. IEEE Trans. Computational Imaging Christos G. Tsinos, Athanasios A. Rontogiannis, Kostas Berberidis
2017	J	`jnl`	Low-rank and Sparse NMF for Joint Endmembers' Number Estimation and Blind Unmixing of Hyperspectral Images. CoRR Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2017	—	`conf`	Low-rank and sparse NMF for joint endmembers' number estimation and blind unmixing of hyperspectral images. EUSIPCO Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2017	J	`jnl`	Online sparse and low-rank subspace learning from incomplete data: A Bayesian view. Signal Process. Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos E. Themelis, Konstantinos D. Koutroumbas
2017	J	`jnl`	Spectral Unmixing-Based Clustering of High-Spatial Resolution Hyperspectral Imagery. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. Eleftheria A. Mylona, Olga A. Sykioti, Konstantinos D. Koutroumbas, Athanasios A. Rontogiannis
2016	J	`jnl`	A Novel Adaptive Possibilistic Clustering Algorithm. IEEE Trans. Fuzzy Syst. Spyridoula D. Xenaki, Konstantinos D. Koutroumbas, Athanasios A. Rontogiannis
2016	J	`jnl`	An Improved Threshold-Based Channel Selection Scheme for Wireless Communication Systems. IEEE Trans. Wirel. Commun. Petros S. Bithas, Athanasios A. Rontogiannis, George K. Karagiannidis
2016	—	`conf`	Detecting hyperplane clusters with adaptive possibilistic clustering. SETN Konstantinos Koutroumbas, Spyridoula D. Xenaki, Athanasios A. Rontogiannis
2016	—	`conf`	Hyperspectral image clustering using a novel efficient online possibilistic algorithm. EUSIPCO Spyridoula D. Xenaki, Konstantinos D. Koutroumbas, Athanasios A. Rontogiannis
2016	—	`conf`	Online low-rank subspace learning from incomplete data using rank revealing ℓ2/ℓ1 regularization. SSP Paris V. Giampouras, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2016	—	`conf`	Optimal sensing and power allocation in pilot-aided shared access systems: A BER minimization approach. SPAWC George A. Ropokis, Miltiades C. Filippou, Athanasios A. Rontogiannis, Luiz A. DaSilva, Nicola Marchetti, Valerio Frascolla, P. Takis Mathiopoulos
2016	J	`jnl`	Simultaneously Sparse and Low-Rank Abundance Matrix Estimation for Hyperspectral Image Unmixing. IEEE Trans. Geosci. Remote. Sens. Paris V. Giampouras, Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2016	J	`jnl`	Sparsity-Aware Possibilistic Clustering Algorithms. IEEE Trans. Fuzzy Syst. Spyridoula D. Xenaki, Konstantinos D. Koutroumbas, Athanasios A. Rontogiannis
2016	J	`jnl`	User selection scheme with limited feedback processing and outdated CSI in multiuser relay networks. Wirel. Commun. Mob. Comput. Petros S. Bithas, Athanasios A. Rontogiannis
2016	J	`jnl`	Variational Bayes Group Sparse Time-Adaptive Parameter Estimation With Either Known or Unknown Sparsity Pattern. IEEE Trans. Signal Process. Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2015	C	`conf`	A new sparsity-aware feature selection method for hyperspectral image clustering. IGARSS Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis, Olga A. Sykioti
2015	—	`conf`	Hyperspectral image unmixing via simultaneously sparse and low rank abundance matrix estimation. WHISPERS Paris V. Giampouras, Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2015	C	`conf`	Joint spectral unmixing and clustering for identifying homogeneous regions in hyperspectral images. IGARSS Eleftheria A. Mylona, Olga A. Sykioti, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2015	J	`jnl`	Mobile Communication Systems in the Presence of Fading/Shadowing, Noise and Interference. IEEE Trans. Commun. Petros S. Bithas, Athanasios A. Rontogiannis
2015	J	`jnl`	On the convergence of the sparse possibilistic c-means algorithm. CoRR Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2015	—	`conf`	Online Bayesian group sparse parameter estimation using a generalized inverse Gaussian Markov chain. EUSIPCO Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2015	—	`conf`	Online Bayesian low-rank subspace learning from partial observations. EUSIPCO Paris Giampouras, Athanasios A. Rontogiannis, Konstantinos E. Themelis, Konstantinos Koutroumbas
2015	J	`jnl`	Simultaneously sparse and low-rank abundance matrix estimation for hyperspectral image unmixing. CoRR Paris Giampouras, Konstantinos Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2015	J	`jnl`	Sparsity-aware Possibilistic Clustering Algorithms. CoRR Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2014	J	`jnl`	A Novel Adaptive Possibilistic Clustering Algorithm. CoRR Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2014	J	`jnl`	A Variational Bayes Framework for Sparse Adaptive Estimation. IEEE Trans. Signal Process. Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2014	C	`conf`	A layered sparse adaptive possibilistic approach for hyperspectral image clustering. IGARSS Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis, Olga Sykioti
2014	—	`conf`	A variational Bayes algorithm for joint-sparse abundance estimation. WHISPERS Paris V. Giampouras, Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos D. Koutroumbas
2014	Misc	`conf`	Adaptive variational sparse Bayesian estimation. ICASSP Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2014	—	`conf`	Analysis of Threshold-Based Selection Diversity Receivers. VTC Fall Petros S. Bithas, Athanasios A. Rontogiannis
2014	—	`conf`	Efficient adaptive equalization of doubly dispersive channels in MIMO-FBMC/OQAM systems. ISWCS Christos Mavrokefalidis, Athanasios A. Rontogiannis, Eleftherios Kofidis, Antonios Beikos, Sergios Theodoridis
2014	—	`conf`	Group-sparse adaptive variational Bayes estimation. EUSIPCO Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2014	J	`jnl`	Mobile Communication Systems in the Presence of Fading/Shadowing, Noise and Interference. CoRR Petros S. Bithas, Athanasios A. Rontogiannis
2014	B	`conf`	Performance analysis of cooperative networks in shadowed fading with co-channel interference. PIMRC Petros S. Bithas, Athanasios A. Rontogiannis
2014	J	`jnl`	Preamble-based channel estimation in single-relay networks using FBMC/OQAM. EURASIP J. Adv. Signal Process. Christos Mavrokefalidis, Eleftherios Kofidis, Athanasios A. Rontogiannis, Sergios Theodoridis
2014	B	`conf`	SINR analysis of cognitive underlay systems with multiple primary transceivers in Nakagami-m fading. WiMob Petros S. Bithas, Athanasios A. Rontogiannis, Kostas Berberidis
2014	—	`conf`	Sequential Sparse Adaptive Possibilistic Clustering. SETN Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2014	Misc	`conf`	Sparse adaptive possibilistic clustering. ICASSP Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2013	—	`conf`	A fast variational Bayes algorithm for sparse semi-supervised unmixing of OMEGA/Mars express data. WHISPERS Athanasios A. Rontogiannis, Konstantinos Themelis, Olga Sykioti, Konstantinos Koutroumbas
2013	—	`conf`	Adaptive possibilistic clustering. ISSPIT Spyridoula D. Xenaki, Konstantinos Koutroumbas, Athanasios A. Rontogiannis
2013	—	`conf`	Optimal training design for channel estimation in OFDM/OQAM cooperative systems. SPAWC Christos Mavrokefalidis, Eleftherios Kofidis, Athanasios A. Rontogiannis, Sergios Theodoridis
2013	—	`conf`	Performance analysis of mobile communication networks in the presence of composite fading, noise and interference. ISSPIT Petros S. Bithas, Athanasios A. Rontogiannis
2013	—	`conf`	Preamble Design for Channel Estimation in OFDM/OQAM Cooperative Systems. ISWCS Christos Mavrokefalidis, Eleftherios Kofidis, Athanasios A. Rontogiannis, Sergios Theodoridis
2013	J	`jnl`	Preamble-based Channel Estimation in OFDM/OQAM Systems: A Review CoRR Eleftherios Kofidis, Dimitrios Katselis, Athanasios A. Rontogiannis, Sergios Theodoridis
2013	J	`jnl`	Preamble-based channel estimation in OFDM/OQAM systems: A review. Signal Process. Eleftherios Kofidis, Dimitrios Katselis, Athanasios A. Rontogiannis, Sergios Theodoridis
2013	—	`conf`	Variational Bayesian sparse adaptive filtering using a Gauss-Seidel recursive approach. EUSIPCO Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2012	J	`jnl`	A Novel Hierarchical Bayesian Approach for Sparse Semisupervised Hyperspectral Unmixing. IEEE Trans. Signal Process. Konstantinos Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2012	—	`conf`	A fast algorithm for the Bayesian adaptive lasso. EUSIPCO Athanasios A. Rontogiannis, Konstantinos E. Themelis, Konstantinos Koutroumbas
2012	J	`jnl`	Adaptive BLAST-type decision-feedback equalizers for DS-CDMA systems. Signal Process. Constantinos Rizogiannis, Eleftherios Kofidis, Athanasios A. Rontogiannis, Sergios Theodoridis
2012	—	`conf`	Space Mission Characteristics and Requirements to be Addressed by Space-Data Router Enhancement of Space-Data Exploitation. WWIC Ioannis A. Daglis, Olga Sykioti, Anastasios Anastasiadis, Georgios Balasis, Iphigenia Keramitsoglou, Dimitris Paronis, Athanasios A. Rontogiannis, Sotiris Diamantopoulos
2011	J	`jnl`	BER Performance Analysis of Cooperative DaF Relay Networks and a New Optimal DaF Strategy. IEEE Trans. Wirel. Commun. George A. Ropokis, Athanasios A. Rontogiannis, Kostas Berberidis
2011	—	`conf`	Greedy algorithms for sparse adaptive decision feedback equalization. ISSPIT Aris S. Lalos, Evangelos Vlachos, Kostas Berberidis, Athanasios A. Rontogiannis
2011	—	`conf`	Sparse semi-supervised hyperspectral unmixing using a novel iterative Bayesian inference algorithm. EUSIPCO Konstantinos E. Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2011	Misc	`conf`	Training design in single relay AF cooperative systems with correlated channels. ICASSP Christos Mavrokefalidis, Athanasios A. Rontogiannis, Kostas Berberidis
2010	B	`conf`	Adaptive BLAST decision-feedback equalizer for MIMO-FBMC/OQAM systems. PIMRC Eleftherios Kofidis, Athanasios A. Rontogiannis
2010	J	`jnl`	An Exact Performance Analysis of MRC / OSTBC over Generalized Fading Channels. IEEE Trans. Commun. George A. Ropokis, Athanasios A. Rontogiannis, P. Takis Mathiopoulos, Kostas Berberidis
2010	J	`jnl`	Frequency domain channel estimation for cooperative communication networks. IEEE Trans. Signal Process. Aris S. Lalos, Athanasios A. Rontogiannis, Kostas Berberidis
2010	J	`jnl`	Preamble-based channel estimation for CP-OFDM and OFDM/OQAM systems: a comparative study. IEEE Trans. Signal Process. Dimitrios Katselis, Eleftherios Kofidis, Athanasios A. Rontogiannis, Sergios Theodoridis
2010	Misc	`conf`	Semi-Supervised Hyperspectral Unmixing via the Weighted Lasso. ICASSP Konstantinos Themelis, Athanasios A. Rontogiannis, Konstantinos Koutroumbas
2009	J	`jnl`	Preamble-Based Channel Estimation for CP-OFDM and OFDM/OQAM Systems: A Comparative Study CoRR Dimitrios Katselis, Eleftherios Kofidis, Athanasios A. Rontogiannis, Sergios Theodoridis
2009	J	`jnl`	Time domain constellation shaping technique for peak-to-average power ratio reduction. IET Commun. Vassilis Dalakas, Athanasios A. Rontogiannis, P. Takis Mathiopoulos
2008	—	`conf`	A soft constrained MAP estimator for supervised hyperspectral signal unmixing. EUSIPCO Konstantinos Themelis, Athanasios A. Rontogiannis
2008	—	`conf`	Channel estimation techniques for half-duplex cooperative communication systems. ISWPC Aris S. Lalos, Athanasios A. Rontogiannis, Kostas Berberidis
2008	J	`jnl`	Quadratic forms in normal RVs: theory and applications to OSTBC over hoyt fading channels. IEEE Trans. Wirel. Commun. George A. Ropokis, Athanasios A. Rontogiannis, P. Takis Mathiopoulos
2008	—	`conf`	Semi-blind channel estimation schemes based on a cooperative form of the cross relation criterion. ISWPC Christos Mavrokefalidis, Kostas Berberidis, Athanasios A. Rontogiannis
2007	—	`conf`	A Block Adaptive Frequency Domain MIMO DFE for Wideband Channels. ICASSP (3) Vassilis Kekatos, Kostas Berberidis, Athanasios A. Rontogiannis
2007	J	`jnl`	Cholesky Factorization-Based Adaptive BLAST DFE for Wideband MIMO Channels. EURASIP J. Adv. Signal Process. Vassilis Kekatos, Athanasios A. Rontogiannis, Kostas Berberidis
2007	B	`conf`	Performance Analysis of Orthogonal Space Time Block Coding over Hoyt Fading Channels. GLOBECOM George A. Ropokis, Athanasios A. Rontogiannis, P. Takis Mathiopoulos
2006	J	`jnl`	A Robust Parametric Technique for Multipath Channel Estimation in the Uplink of a DS-CDMA System. EURASIP J. Wirel. Commun. Netw. Vassilis Kekatos, Athanasios A. Rontogiannis, Kostas Berberidis
2006	—	`conf`	A Square-Root Adaptive V-BLAST Algorithm for Fast Time-Varying MIMO Channels. ICC Athanasios A. Rontogiannis, Vassilis Kekatos, Kostas Berberidis
2006	J	`jnl`	A square-root adaptive V-BLAST algorithm for fast time-varying MIMO channels. IEEE Signal Process. Lett. Athanasios A. Rontogiannis, Vassilis Kekatos, Kostas Berberidis
2006	J	`jnl`	On the performance analysis of digital communications over generalized-K fading channels. IEEE Commun. Lett. Petros S. Bithas, Nikos C. Sagias, P. Takis Mathiopoulos, George K. Karagiannidis, Athanasios A. Rontogiannis
2005	—	`conf`	Digital Communications over Generalized-K Fading Channels. ISWCS Petros S. Bithas, Nikolaos C. Sagias, P. Takis Mathiopoulos, George K. Karagiannidis, Athanasios A. Rontogiannis
2005	J	`jnl`	Efficient semi-blind estimation of multipath channel parameters via a delay decoupling optimization approach. Signal Process. Athanasios A. Rontogiannis, Kostas Berberidis, Alexandra Marava, Jacques Palicot
2003	J	`jnl`	Efficient decision feedback equalization for sparse wireless channels. IEEE Trans. Wirel. Commun. Athanasios A. Rontogiannis, Kostas Berberidis
2003	—	`conf`	Efficient multipath channel estimation using a semi-blind parametric technique. ICASSP (4) Athanasios A. Rontogiannis, Alexandra Marava, Kostas Berberidis, Jacques Palicot
2002	—	`conf`	A (SEMI)-blind equalization technique for wireless burst transmission systems. EUSIPCO Athanasios A. Rontogiannis, Kostas Berberidis, Alexandra Marava
2002	J	`jnl`	Adaptive digital filters [Book Review]. IEEE Trans. Autom. Control. Athanasios A. Rontogiannis, Nicholas Kalouptsidis
2002	—	`conf`	Semi-blind estimation of multipath channel parameters via a separable least squares approach. DSP Athanasios A. Rontogiannis, Alexandra Marava, Kostas Berberidis, Jacques Palicot
2000	Misc	`conf`	Efficient decision feedback equalizer for sparse multipath channels. ICASSP Kostas Berberidis, Athanasios A. Rontogiannis
1998	J	`jnl`	Efficient block implementation of the decision feedback equalizer. IEEE Signal Process. Lett. Kostas Berberidis, Athanasios A. Rontogiannis, Sergios Theodoridis
1998	J	`jnl`	Multichannel fast QRD-LS adaptive filtering: new technique and algorithms. IEEE Trans. Signal Process. Athanasios A. Rontogiannis, Sergios Theodoridis
1998	J	`jnl`	New fast QR decomposition least squares adaptive algorithms. IEEE Trans. Signal Process. Athanasios A. Rontogiannis, Sergios Theodoridis
1996	—	`conf`	A highly parallel multichannel fast qrd-ls adaptive algorithm. EUSIPCO Athanasios A. Rontogiannis, Sergios Theodoridis
1996	—	`conf`	An adaptive LS algorithm based on orthogonal Householder transformations. ICECS Athanasios A. Rontogiannis, Sergios Theodoridis
1996	J	`jnl`	On inverse factorization adaptive least-squares algorithms. Signal Process. Athanasios A. Rontogiannis, Sergios Theodoridis
1995	Misc	`conf`	New fast inverse QR least squares adaptive algorithms. ICASSP Athanasios A. Rontogiannis, Sergios Theodoridis