%0 Journal Article %J IEEE Transactions on Broadcasting %D 2022 %T Flexible User Mapping for Radio Resource Assignment in Advanced Satellite Payloads %A Tomás Ramírez %A Carlos Mosquera %A Nader Alagha %B IEEE Transactions on Broadcasting %G eng %0 Journal Article %J Frontiers in Space Technologies %D 2021 %T Editorial: Signal Processing for Beyond 5G Non-Terrestrial Networks %A Carlos Mosquera %A Pantelis-Daniel Arapoglou %B Frontiers in Space Technologies %V 2 %G eng %U https://www.frontiersin.org/articles/10.3389/frspt.2021.780171/full %R 10.3389/frspt.2021.780171 %0 Conference Paper %B 9th European Signal Processing Conference, EUSIPCO 2021 %D 2021 %T Flexible Beam-User Mapping for Multibeam Satellites %A Tomás Ramírez %A Carlos Mosquera %A Nader Alagha %B 9th European Signal Processing Conference, EUSIPCO 2021 %C Dublin, Irlanda %G eng %0 Conference Paper %B 38th International Communications Satellite Systems Conference (ICSSC), %D 2021 %T Non-Orthogonal Transmission Under Flexible Illumination Patterns For Advanced Satellite Payloads %A Tomás Ramírez %A Carlos Mosquera %A Nader Alagha %B 38th International Communications Satellite Systems Conference (ICSSC), %C Washington DC, USA %G eng %0 Journal Article %J International Journal of Satellite Communications and Networking %D 2020 %T Link Adaptation and SINR errors in Practical Multicast Multibeam Satellite Systems with Linear Precoding %A Anxo Tato %A Stefano Andrenacci %A Eva Lagunas %A Symeon Chatzinotas %A Carlos Mosquera %K link adaptation %K multi-beam satellite %K precoding %K satellite communications %B International Journal of Satellite Communications and Networking %G eng %0 Conference Paper %B 10th Advanced Satellite Multimedia Systems Conference (ASMS) and 16th Signal Processing for Space Communications Workshop (SPSC) %D 2020 %T Study on the Application of NOMA Techniques for Heterogeneous Satellite Terminals %A Tomás Ramírez %A Carlos Mosquera %A Nele Noels %A Màrius Caus %A Joan Bas %A Luis Blanco %A Nader Alagha %B 10th Advanced Satellite Multimedia Systems Conference (ASMS) and 16th Signal Processing for Space Communications Workshop (SPSC) %G eng %0 Conference Paper %B 34th Annual ACM Symposium on Applied Computing, SAC 2019 %D 2019 %T Dynamic Attribute-Based Privacy-Preserving Genomic Susceptibility Testing %A Mina Namazi %A Cihan Eryonucu %A Erman Ayday %A Fernando Pérez-González %B 34th Annual ACM Symposium on Applied Computing, SAC 2019 %C Limassol, Cyprus %8 04/2019 %G eng %0 Journal Article %J Signal Processing %D 2019 %T MMSE filter design for Full-Duplex filter-and-forward MIMO relays under limited dynamic range %A Emilio Antonio-Rodríguez %A Stefan Werner %A R. López-Valcarce %A Risto Wichman %K adaptive signal processing %K full-duplex %K winter %X
We study the problem of optimizing the end-to-end performance of a full-duplex filter-and-forward MIMO relay link, consisting
of a source, a relay, and a destination node, by employing linear filtering at each node. The system model accounts for multipath
propagation and self-interference at the relay, as well as transmitter impairments and limited dynamic range at every node. The
design accommodates signals with arbitrary spectra and includes the direct link between the source and destination nodes. Under
the minimum mean square error criterion, the resulting non-convex problem is approximated by a sequence of convex problems
and solved by means of an alternating minimization method. Linear constraints allocate some of the degrees of freedom in the relay
to guarantee a sufficiently small residual self-interference. Simulations quantify the impact of degrees of freedom, the dynamic
range, and the balance between direct and relay paths on the link performance.
%B Signal Processing %V 156 %P 208-219 %8 03/2019 %G eng %R doi.org/10.1016/j.sigpro.2018.11.001 %0 Conference Paper %B 36th International Communications Satellite Systems Conference (ICSSC) %D 2018 %T Adjacent Beams Resource Sharing to Serve Hot Spots : A Rate Splitting Approach %A Tomás Ramírez %A Carlos Mosquera %A Màrius Caus %A Adriano Pastore %A Nader Alagha %A Nele Noels %X
This work addresses the uneven traffic demand scenario in multi-beam satellite systems, in which a hot-spot beam
is surrounded by cold beams. After partitioning the hotspot beam in different sectors, resource pulling from cold
neighbouring beams is allowed following an aggressive frequency-reuse scheme. As a consequence, the level of
the co-channel interference within the hot-spot beam increases. A scheme known as Non-Coherent Rate-Splitting (NCRS)
is employed to cope with this interference, based on the exclusive use of magnitude channel state information at the transmitter (CSIT).
The receiver complexity is increased with respect to full CSIT precoding schemes, which are considered for benchmarking purposes. Different NCRS strategies are analyzed and compared with several partial and full CSIT schemes. The proposed solution not only shows an improvement with respect to partial CSIT benchmarks, but also displays a competitive performance against full CSIT precoders.
%B 36th International Communications Satellite Systems Conference (ICSSC) %C Niagara Falls, Canada %8 10/2018 %G eng %0 Conference Paper %B 15th International Symposium on Wireless Communication Systems (ISWCS) %D 2018 %T Exploratory Analysis of Superposition Coding and Rate Splitting for Multibeam Satellite Systems %A Màrius Caus %A Adriano Pastore %A Mònica Navarro %A Tomás Ramírez %A Carlos Mosquera %A Nele Noels %A Nader Alagha %A Ana I. Perez-Neira %B 15th International Symposium on Wireless Communication Systems (ISWCS) %C Lisbon, Portugal %G eng %0 Conference Paper %B 9th Advanced Satellite Multimedia Systems Conference (ASMS) and 15th Signal Processing for Space Communications Workshop (SPSC) %D 2018 %T Link Adaptation and Carriers Detection Errors in Multibeam Satellite Systems with Linear Precoding %A Anxo Tato %A Stefano Andrenacci %A Chatzinotas, S. %A Carlos Mosquera %X

The application of linear precoding at the gateway side enables broadband multibeam satellite systems to use more aggressive frequency reuse patterns increasing the overall capacity of future High Throughput Satellites (HTS). However, although some previous works about precoding consider imperfect CSIT (Chanel State Information at the Transmitter) adding some CSI estimation errors, that is not the main cause of CSI degradation. In practice, receivers can only detect and estimate a few coefficients of the CSI vector being the other nullified, replaced by zeros. This introduces errors in the SINR calculation by the gateway that lead to the assignment of Modulation and Coding Schemes (MCS) over the decoding possibilities of the users, increasing the rate of erroneous frames. In this work, the errors in the SINR calculation caused by the nullification of the CSI are analyzing statistically and geographically using a radiation diagram of 245 beams over Europe. Furthermore, a solution based on a link adaptation algorithm with a per user adaptive margin is proposed, helping to achieve the QEF (Quasi-error Free) target of DVB-S2X systems.
 

%B 9th Advanced Satellite Multimedia Systems Conference (ASMS) and 15th Signal Processing for Space Communications Workshop (SPSC) %C Berlin, Germany %G eng %0 Conference Paper %B 2017 Information Theory and Applications Workshop (ITA) %D 2017 %T Bit allocation for increased power efficiency in 5G receivers with variable-resolution ADCs %A b. Abbas, W %A Gomez-Cuba, F %A Zorzi, M %K 5G mobile communication %K analogue-digital conversio %B 2017 Information Theory and Applications Workshop (ITA) %P 1–7 %8 feb %G eng %0 Journal Article %J Digital Signal Processing %D 2017 %T CDMA-based Acoustic Local Positioning System for Portable Devices with Multipath Cancellation %A Fernando J. Alvarez %A Teodoro Aguilera %A R. López-Valcarce %K compass %K wsn %X
This paper presents an acoustic local positioning system (ALPS) suitable for indoor positioning
of portable devices such as smartphones or tablets, based on the transmission of high frequency
CDMA-coded signals from a fixed network of beacons. The main novelty of the proposed ALPS is
its capability to mitigate the effects of multipath propagation by performing an accurate estimation
of the Line-of-Sight Time-of-Flights (LOS-TOF) through the Matching Pursuit algorithm. Signal
detection, multipath cancellation and positioning estimation all take place within the portable device,
which provides a graphical representation of the updated position in less than a second. The
performance of the Matching Pursuit algorithm is analyzed in a real scenario and the results show
that the proposed method is capable to retrieve the multipath-free System Availability under strong
multipath conditions with SNR levels as low as 0 dB.
%B Digital Signal Processing %V 62 %P 38-51 %8 03/2017 %G eng %R 10.1016/j.dsp.2016.11.001 %0 Conference Paper %B European Wireless 2017; 23th European Wireless Conference %D 2017 %T Millimeter Wave Receiver Comparison Under Energy vs Spectral Efficiency Trade-off %A Abbas, W B %A Gomez-Cuba, F %A Zorzi, M %B European Wireless 2017; 23th European Wireless Conference %P 1–7 %G eng %0 Conference Paper %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %D 2017 %T Time-domain channel estimation for wideband millimeter wave systems with hybrid architecture %A Kiran Venugopal %A Ahmed Alkhateeb %A Robert W. Heath Jr. %A Nuria González-Prelcic %K compass %K mmWave %K myrada %X

Millimeter wave (mm Wave) systems will likely employ large antennas at both the transmitter and receiver for directional beamforming. Hybrid analog/digital MIMO architectures have been proposed previously for leveraging both array gain and multiplexing gain, while reducing the power consumption in analog-to-digital converters. Channel knowledge is needed to design the hybrid precoders/combiners, which is difficult to obtain due to the large antenna arrays and the frequency selective nature of the channel. In this paper, we propose a sparse recovery based time-domain channel estimation technique for hybrid architecture based frequency selective mmWave systems. The proposed compressed sensing channel estimation algorithm is shown to provide good estimation error performance, while requiring small training overhead. The simulation results show that using multiple RF chains at the receiver and the transmitter further reduces the training overhead.

%B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %P 6193-6197 %8 03/2017 %G eng %0 Journal Article %J Signal Processing %D 2017 %T Wideband full-duplex MIMO relays with blind adaptive self-interference cancellation %A Emilio Antonio-Rodríguez %A Stefan Werner %A R. López-Valcarce %A Taneli Riihonen %A Risto Wichman %K adaptive signal processing %K compass %K full duplex %K winter %X
We develop adaptive self-interference cancellation algorithms for both filter-and-forward and decode-and-forward
multiple-input multiple-output relays. The algorithms are blind in the sense that they only exploit the spectral properties
of the transmitted signal to identify the self-interference channel, while dealing with frequency-selective channels and
arbitrary signal spectra. Our approach is non-intrusive in the sense that the algorithms can successfully identify, track,
and cancel the self-interference distortion while the relay is operating in its normal mode. We study the stationary
points of the algorithms and analyze under which conditions they achieve perfect cancellation of the self-interference.
Simulation results show that the algorithms provide residual self-interference levels below the noise floor by using
the time samples of only a few OFDM symbols.
%B Signal Processing %V 130 %P 74-85 %8 01/2017 %G eng %& 74 %R 10.1016/j.sigpro.2016.06.010 %0 Conference Paper %B International Conference on Availability, Reliability and Security (ARES) %D 2016 %T Co-creating Security-and-Privacy-by-Design Systems %A Sauro Vicini %A Francesco Alberti %A Nicolás Notario %A Alberto Crespo %A Juan Ramón Troncoso-Pastoriza %A Alberto Sanna %B International Conference on Availability, Reliability and Security (ARES) %C Salzburg, Germany %P 768-775 %8 09/2016 %G eng %0 Journal Article %J IEEE Signal Processing Magazine %D 2016 %T Compressive Covariance Sensing: Structure-Based Compressive Sensing Beyond Sparsity %A Daniel Romero %A Dyonisius D Ariananda %A Zhi Tian %A Geert Leus %K compass %K compressed sensing %X
Compressed sensing deals with the reconstruction of signals
from sub-Nyquist samples by exploiting the sparsity of their
projections onto known subspaces. In contrast, the present
article is concerned with the reconstruction of second-order
statistics, such as covariance and power spectrum, even in
the absence of sparsity priors. The framework described here
leverages the statistical structure of random processes to
enable signal compression and offers an alternative perspective
at sparsity-agnostic inference. Capitalizing on parsimonious
representations, we illustrate how compression and reconstruction
tasks can be addressed in popular applications such
as power spectrum estimation, incoherent imaging, direction
of arrival estimation, frequency estimation, and wideband
spectrum sensing.
%B IEEE Signal Processing Magazine %V 33 %P 78--93 %8 01/2016 %G eng %N 1 %0 Journal Article %J IEEE Transactions on Multimedia %D 2016 %T Data Hiding Robust to Mobile Communication Vocoders %A Reza Kazemi %A Fernando Pérez-González %A Mohamed Ali Akhaee %A Fereydoon Behnia %B IEEE Transactions on Multimedia %V 18 %P 2345-2357 %8 12/2016 %G eng %N 12 %R 10.1109/TMM.2016.2599149 %0 Conference Paper %B Information Theory and Applications Workshop (ITA %D 2016 %T Estimating millimeter wave channels using out-of-band measurements %A Anum Ali %A Nuria González-Prelcic %A R.W. Heath Jr. %K compass %K mmWave %B Information Theory and Applications Workshop (ITA %8 January, 2016 %G eng %0 Journal Article %J IEEE Access %D 2016 %T Hybrid MIMO Architectures for Millimeter Wave Communications: Phase Shifters or Switches? %A Mendez-Rial, Roi %A Rusu, Cristian %A Nuria González-Prelcic %A Alkhateeb, A. %A Heath Jr, Robert W. %B IEEE Access %V 4 %P 247-267 %8 January, 2016 %G eng %U http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7370753 %R 10.1109/ACCESS.2015.2514261 %0 Journal Article %J International Journal of Satellite Communications and Networking %D 2016 %T Link adaptation in mobile satellite links: schemes for different degrees of CSI knowledge %A Alberto Rico-Alvariño %A Jesus Arnau %A Carlos Mosquera %K compass %K satcom %B International Journal of Satellite Communications and Networking %V 34 %P 679-694 %8 09/2016 %G eng %N 5 %0 Journal Article %J IEEE Transactions on Wireless Communications %D 2015 %T On the analysis of scheduling in dynamic duplex multi-hop mmWave cellular systems %A García-Rois, Juan %A Gomez-Cuba, Felipe %A Akdeniz, Mustafa Riza %A González-Castaño, Francisco Javier %A Burguillo-Rial, Juan Carlos %A Rangan, Sundeep %A Lorenzo, Beatriz %B IEEE Transactions on Wireless Communications %V 14 %P 6028 – 6042 %8 jun %G eng %0 Conference Paper %B IEEE International Conference on Communications (ICC) %D 2015 %T Blind Satellite Inter-Gateway Interference Mitigation %A J. Arnau %A C. Mosquera %K compass %K satcom %B IEEE International Conference on Communications (ICC) %8 2015 %G eng %0 Book Section %B Cooperative and Cognitive Satellite Systems %D 2015 %T Multibeam Joint Detection %A J. Arnau %A R. de Lamare %A C. Mosquera %K satcom %B Cooperative and Cognitive Satellite Systems %I Elsevier %G eng %0 Conference Paper %B IEEE 9th International Symposium on Intelligent Signal Processing (WISP) %D 2015 %T Multipath cancellation in broadband acoustic local positioning systems %A Fernando J. Alvarez %A R. López-Valcarce %K compass %K wsn %X

This work proposes a novel method to estimate the Line-of-Sight Time-of-Flights (LOS-TOFs) in a broadband acoustic local positioning system (ALPS) with strong multipath interference. The proposed method is based on the Matching Pursuit channel estimation algorithm that provides a low complexity approximation to the Maximum Likelihood solution for sparse channels. A multichannel version of this algorithm has been implemented to estimate a minimum of three coefficients in the channel responses of a particular ALPS, composed of four beacons that perform the simultaneous emission of BPSK modulated 255-bit Kasami codes. A statistical analysis of performance has been carried out by using a set of test signals synthetically generated to simulate different positions and reflection coefficients of the environment. The results of this analysis show the enhanced capability of the proposed method to estimate the LOS-TOFs under strong multipath interference, with respect to that of a classical system based on correlation + thresholding.

%B IEEE 9th International Symposium on Intelligent Signal Processing (WISP) %I IEEE %C Siena, Italy %8 05/2015 %G eng %R 10.1109/WISP.2015.7139174 %0 Conference Paper %B Twelfth International Symposium on Wireless Communication Systems (ISWCS) %D 2015 %T Pushing for higher rates and efficiency in Satcom: the different perspectives within SatNExIV %A Miguel Ángel Vázquez %A Ana Pérez Neira %A Carlos Mosquera %A Bhavani Shankar %A Pol Henarejos %A Athanasios Panagopoulos %A Giovanni Giambene %A Vasilios Siris %A George Polyzos %A Nader Alagha %K satcom %B Twelfth International Symposium on Wireless Communication Systems (ISWCS) %C Brussels %G eng %0 Conference Paper %B IEEE 16th Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %D 2015 %T Subspace-constrained SINR optimization in MIMO full-duplex relays under limited dynamic range %A Emilio Antonio-Rodríguez %A R. López-Valcarce %A Taneli Riihonen %A Stefan Werner %A Risto Wichman %K adaptive signal processing %K compass %K full duplex %X
We propose a method for maximizing the signal-to-interference-plus-noise ratio (SINR) in a wideband full-duplex MIMO regenerative relay that accounts limited dynamic range of the receiver and transmitter impairments. Transmit and receive filters are designed at the relay, by means of an alternating minimization algorithm, to minimize the interference at the decoder input in the destination node. We impose channel shortening and subspace constraints to ensure that the received signal at the destination is not compromised. Simulation results show that the presented method significantly outperforms other constrained approaches.
%B IEEE 16th Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %I IEEE %C Stockholm, Sweden %8 06/2015 %G eng %0 Conference Paper %B Proc. ASMS & SPSC %D 2014 %T Balancing Closed and Open Loop CSI in Mobile Satellite Link Adaptation %A Alberto Rico-Alvariño %A Arnau, Jesus %A Carlos Mosquera %K dynacs %K satcom %B Proc. ASMS & SPSC %C Livorno, Italy %G eng %1

Best paper award

%R 10.1109/ASMS-SPSC.2014.6934548 %0 Conference Paper %B IEEE Sensor Array Multichannel Signal Process. Workshop (SAM) %D 2014 %T Cooperative compressive power spectrum estimation %A Dyonisius D Ariananda %A Daniel Romero %A Geert Leus %K cognitive radio %K wsn %B IEEE Sensor Array Multichannel Signal Process. Workshop (SAM) %G eng %0 Conference Paper %B European Wireless 2014 (EW2014) %D 2014 %T Dissection of multibeam satellite communications with a large-scale antenna system toolbox %A Arnau, Jesus %A Carlos Mosquera %K dynacs %K large-scale analysis %K Massive MIMO %K multibeam satellites %K Multiuser detection %K satcom %X

Current multibeam satellite systems consist of a very large number of spot beams. In this paper, we analyze them from the large scale MIMO perspective, and establish a comparison with massive MIMO systems. It will be shown that the large number of beams has important operational implications, and that it simplifies the analysis because it allows using asymptotic results. However, it will also be shown that multibeam satellite systems cannot be considered massive MIMO systems.

%B European Wireless 2014 (EW2014) %C Barcelona, Spain %P 548-553 %G eng %R ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6843099 %0 Journal Article %J IEEE Communications Magazine %D 2014 %T MIMO precoding and combining solutions for millimeter wave systems %A Ahmed Alkhateeb %A Jianhua Mo %A Nuria González-Prelcic %A Robert W. Heath Jr. %K adaptive signal processing %K compass %K mmWave %X

Millimeter-wave communication is one way to alleviate the spectrum gridlock at lower frequencies while simultaneously providing high-bandwidth communication channels. MmWave makes use of MIMO through large antenna arrays at both the base station and the mobile station to provide sufficient received signal power. This article explains how beamforming and precoding are different in MIMO mmWave systems than in their lower-frequency counterparts, due to different hardware constraints and channel characteristics. Two potential architectures are reviewed: hybrid analog/digital precoding/combining and combining with low-resolution analog- to-digital converters. The potential gains and design challenges for these strategies are discussed, and future research directions are highlighted.

%B IEEE Communications Magazine %V 52 %P 122-131 %8 12/2014 %G eng %N 12 %R 10.1109/MCOM.2014.6979963 %0 Thesis %D 2014 %T On-Ground Processing for Spectral Efficiency Improvement in Next Generation Satellite Communications %A Arnau, Jesus %K satcom %X
The eternal demand of improved spectrum exploitation for next generation satellite communications requires the study of techniques that are potentially able of a breakthrough. In this thesis we focus on two of the main issues hindering the performance of satellite communications.
 
In the first part of the thesis, we study the use of multi-user detection techniques in the return link of multibeam satellite systems operated with an aggressive frequency reuse strategy. We start by comparing their performance with respect to a traditional scenario, and study the possibility of splitting the processing between the gateway and the satellite to cope with practical constraints. We then study the fundamental performance limits of such a system when spatially correlated rain attenuation affects the users; analytical expressions are obtained for the high and low SNR regimes. Finally, we consider non perfect channel state information and obtain, through random matrix theory, an approximation of the residual error as a function of the system's parameters.
 
In the second part, we focus on link adaptation for mobile satellite communications. For the return link, we investigate the potential of open-loop channel state information, which is timely but scarcely accurate; the finding that this information is better than the traditional closed-loop one depending on the channel conditions motivated the study of an adaptive algorithm to dynamically balance both. Finally, in the forward link we considered the case where retransmissions are available, and designed the optimum modulation and coding scheme sequence for the different retransmissions of a packet in terms of throughput.
%I Universidade de Vigo %C Vigo, Spain %G eng %9 PhD thesis %0 Journal Article %J IEEE Transactions on Wireless Communications %D 2014 %T Performance of the Multibeam Satellite Return Link with Correlated Rain Attenuation %A Arnau, Jesus %A Christopoulos, D. %A Chatzinotas, S. %A C. Mosquera %A Ottersten, B. %K Antennas %K Approximation methods %K Attenuation %K Correlation %K dynacs %K Rain %K satcom %K Satellites %K Signal to noise ratio %X

Rain attenuation is among the major impairments for satellite systems operating in the K band and above. In this paper, we investigate the impact of spatially correlated rain attenuation on the performance of a multibeam satellite return link. For a comprehensive assessment, an analytical model for the antenna pattern that generates the beams is also proposed. We focus on the outage capacity of the link, and obtain analytical approximations at high and low SNR. The derived approximations provide insights on the effect of key system parameters – like the inter-user distance, the satellite beam radius, or the rain intensity– and simulation results show that it fits tightly to the Monte Carlo results. Additionally, the derived expressions can be easily particularized for the single-user case, providing some novel insights.

%B IEEE Transactions on Wireless Communications %P 1-1 %G eng %R 10.1109/TWC.2014.2329682 %0 Conference Paper %B IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM) %D 2014 %T SINR Optimization in Wideband Full-Duplex MIMO Relays under Limited Dynamic Range %A Emilio Antonio-Rodríguez %A R. López-Valcarce %A Taneli Riihonen %A Stefan Werner %A Risto Wichman %K adaptive signal processing %K compass %K full duplex %B IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM) %C A Coruña, Spain %G eng %R 10.1109/SAM.2014.6882369 %0 Conference Paper %B IEEE 14th Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %D 2013 %T Adaptive Self-interference Cancellation in Wideband Full-Duplex Decode-and-Forward MIMO Relays %A Emilio Antonio-Rodríguez %A R. López-Valcarce %A Taneli Riihonen %A Stefan Werner %A Risto Wichman %K adaptive signal processing %K dynacs %K full duplex %B IEEE 14th Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %C Darmstadt, Germany %8 06/2013 %G eng %R 10.1109/SPAWC.2013.6612074 %0 Conference Paper %B Int. Conf. Acoust., Speech, Signal Process. (ICASSP) %D 2013 %T Autocorrelation-based adaptation rule for feedback equalization in Wideband Full-Duplex Amplify-and-Forward MIMO relays %A Emilio Antonio-Rodríguez %A R. López-Valcarce %A Taneli Riihonen %A Stefan Werner %A Risto Wichman %K adaptive signal processing %K dynacs %K full duplex %X
Simultaneous reception and transmission in the same frequency, so-called full-duplex operation, causes an infinite feedback loop in an amplify-and-forward relay. The unwanted echoes may result in oscillation at the relay, making it unstable, and distorting the spectrum. This paper presents an adaptive MIMO filtering method for full-duplex amplify-and-forward relays that aims at solving the joint problem of self-interference mitigation and equalization of the source-relay channel. The scheme exploits knowledge of the autocorrelation of the transmitted signal as the only side information while allowing the relay, in the best case, to implement precoding as if there was not any self-interference or frequency selectivity in the source-relay channel. Finally, the proposed adaptation algorithm is investigated by determining its stationary points and by performing simulations in a MIMO-OFDM framework.
%B Int. Conf. Acoust., Speech, Signal Process. (ICASSP) %G eng %R 10.1109/ICASSP.2013.6638606 %0 Conference Paper %B Int. Conf. Acoust., Speech, Signal Process. (ICASSP) %D 2013 %T Cancelling self-interference in full-duplex relays without Angle-of-Arrival information %A Emilio Antonio-Rodríguez %A R. López-Valcarce %K adaptive signal processing %K dynacs %K full duplex %X
With full-duplex relays, simultaneous reception and transmission in
the same frequency produce self-interference distortion and relay oscillation,
hampering reception at the receiver end unless properly
mitigated. Previous adaptive methods for self-interference cancellation
using multiple receive antennas require knowledge of the direction
of arrival of the source signal. We present a novel architecture
and adaptive scheme for Amplify-and-Forward relays allowing cancellation
without such knowledge. The temporal filter is updated
under the property restoral paradigm in order to match the power
spectrum of the retransmitted signal to that of the source signal.
%B Int. Conf. Acoust., Speech, Signal Process. (ICASSP) %G eng %R 10.1109/ICASSP.2013.6638558 %0 Conference Paper %B IEEE Int. Workshop Comput. Advances Multi-Sensor Adaptive Process (CAMSAP) %D 2013 %T Compressive Angular and Frequency Periodogram Reconstruction for Multiband Signals %A Ariananda, D. D. %A Daniel Romero %A Geert Leus %K cognitive radio %K dynacs %B IEEE Int. Workshop Comput. Advances Multi-Sensor Adaptive Process (CAMSAP) %C San Martin %G eng %R 10.1109/CAMSAP.2013.6714102 %0 Conference Proceedings %B Asilomar Conference on Signals Systems and Computers %D 2013 %T Cross Layer Link Adaptation in Time Varying Mobile Satellite Channels with Statistical and Outdated CSIT %A Alberto Rico-Alvariño %A J. Arnau %A Carlos Mosquera %K dynacs %K satcom %B Asilomar Conference on Signals Systems and Computers %G eng %R 10.1109/ACSSC.2013.6810481 %0 Journal Article %J Communications Letters, IEEE %D 2013 %T MMSE Performance Analysis of Generalized Multibeam Satellite Channels %A Christopoulos, D. %A J. Arnau %A Chatzinotas, S. %A C. Mosquera %A Ottersten, B. %K dynacs %K linear minimum mean square error receivers %K multibeam satellites %K Multiuser detection %K return link %K satcom %B Communications Letters, IEEE %P 1-4 %G eng %R 10.1109/LCOMM.2013.052013.122658 %0 Conference Paper %B 31st AIAA International Communications Satellite Systems Conference %D 2013 %T Open Loop Adaptive Coding and Modulation for Mobile Satellite Return Links %A Arnau, Jesus %A Carlos Mosquera %K dynacs %K link adaptation %K satcom %B 31st AIAA International Communications Satellite Systems Conference %I American Institute of Aeronautics and Astronautics %C Florence, Italy %G eng %1

http://dx.doi.org/10.2514/6.2013-5704

%R doi:10.2514/6.2013-5704 %0 Journal Article %J IEEE Transactions on Smart Grid %D 2013 %T Smart Grid Last-Mile Communications Model and Its Application to the Study of Leased Broadband Wired-Access %A Gomez-Cuba, Felipe %A Asorey-Cacheda, Rafael %A González-Castaño, Francisco Javier %X

This paper addresses the modeling of specific Smart Grid (SG) communication requirements from a data networking research perspective, as a general approach to the study of different access technologies suitable for the last mile (LM). SGLM networks serve customers' Energy Services Interfaces. From functional descriptions of SG, a traffic model is developed. It is then applied to the study of an access architecture based on leased lines from local broadband access providers. This permits consideration of the potential starvation of domestic traffic, which is avoided by applying well-known traffic management techniques. From previous results obtained for a purpose-built WiMAX SGLM network, the intuition that a leased broadband access yields lower latencies is verified. In general, the proposed traffic model simplifies the design of benchmarks for the comparison of candidate access technologies.

%B IEEE Transactions on Smart Grid %V 4 %P 5–12 %8 mar %G eng %0 Conference Paper %B Globecom 2013 - Symposium on Selected Areas in Communications (GC13 SAC) %D 2013 %T Statistical Cross Layer Adaptation in Fast Fading Mobile Satellite Channels %A Alberto Rico-Alvariño %A J. Arnau %A C. Mosquera %K dynacs %K fast fading channels %K link adaptation %K mobile satellite %K satcom %X

Link adaptation in mobile satellite channels is difficult because of the large propagation delays, the frequent signal blockage and the variation of the channel statistics. In this paper, we propose a cross-layer link adaptation strategy that exploits statistical, long-term CSI to increase the throughput when some retransmissions are available; this increase is obtained while meeting a target outage probability constraint. Our strategy takes as inputs the estimated packet error rates of the available modulation and coding schemes (MCS) and their rates; as an output, it returns the optimum sequence of MCS to be used. Results will also show that simple information acquisition strategies can still provide very good results.

%B Globecom 2013 - Symposium on Selected Areas in Communications (GC13 SAC) %C Atlanta, USA %G eng %R 10.1109/GLOCOM.2013.6831502 %0 Journal Article %J IEEE J. Selected Areas in Communications %D 2012 %T An Adaptive Feedback Canceller for Full-Duplex Relays Based on Spectrum Shaping %A R. López-Valcarce %A Emilio Antonio-Rodríguez %A C. Mosquera %A Fernando Pérez-González %K adaptive signal processing %K dynacs %K full duplex %X
Although full-duplex relaying schemes are appealing in order to improve spectral efficiency, simultaneous reception and transmission in the same frequency results in selfinterference,
distorting the retransmitted signal and making the relay prone to oscillation. Current feedback cancellation techniques by means of adaptive filters are hampered by the fact that the useful and interference signals are highly correlated. We present a new adaptive algorithm which effectively and blindly
restores the spectral shape of the desired signal. In contrast
with previous schemes, the novel adaptive feedback canceller has low complexity, does not introduce additional delay in the relay station, and partly compensates for multipath propagation.
%B IEEE J. Selected Areas in Communications %V 30 %P 1566 - 1577 %8 08/2012 %G eng %N 8 %R 10.1109/JSAC.2012.120923 %0 Conference Paper %B IEEE 13th Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012) %D 2012 %T Adaptive self-interference suppression for full-duplex relays with multiple receive antennas %A Emilio Antonio-Rodríguez %A R. López-Valcarce %K adaptive signal processing %K dynacs %K full duplex %X
In full-duplex relays, simultaneous reception and transmission
in the same frequency results in self-interference which distorts the retransmitted signal and makes the relay prone to oscillation. We present an adaptive feedback canceller for multiple-input single-output (MISO) relays, efficiently combining spatial and temporal processing. The receive array is adaptively steered towards the minimum variance distortionless response (MVDR), whereas the temporal filter update is based on a novel low-complexity spectrum shaping scheme which avoids introducing additional delay in the relay station.
%B IEEE 13th Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012) %I IEEE %C Çesme, Turkey %8 07/2012 %G eng %R 10.1109/SPAWC.2012.6292948 %0 Conference Paper %B 30th AIAA International Communications Satellite Systems Conference (ICSSC) %D 2012 %T Adaptive Transmission Techniques for Mobile Satellite Links %A Arnau, Jesus %A Alberto Rico-Alvariño %A C. Mosquera %K dynacs %K satcom %B 30th AIAA International Communications Satellite Systems Conference (ICSSC) %C Ottawa, Canada %G eng %1
Best Proffesional Paper Award
%0 Conference Paper %B ASILOMAR 2012 %D 2012 %T Multiuser Detection Performance in Multibeam Satellite Links under Imperfect CSI %A Arnau, Jesus %A C. Mosquera %K dynacs %K satcom %B ASILOMAR 2012 %C Pacific Grove, CA %G eng %1
Accepted for publication
%R 10.1109/ACSSC.2012.6489048 %0 Conference Paper %B 2012 6th Advanced Satellite Multimedia Systems Conference (ASMS) and 12th Signal Processing for Space Communications Workshop (SPSC) (ASMS/SPSC 2012) %D 2012 %T Performance Analysis of Multiuser Detection for Multibeam Satellites Under Rain Fading %A Arnau, Jesus %A C. Mosquera %K dynacs %K hybrid beamforming %K multibeam satellites. %K Multiuser detection %K rain fading %K satcom %X

Multibeam satellite systems are nowadays widely employed, and their use is expected to grow in the next decades. This has raised the interest for signal processing techniques able to mitigate the interference among beams, since they could enable a much more aggressive spectrum reuse. From an engineering point of view, the design of the system must be no longer based on the capabilities provided by the usual physical layer; it should take into account the presence of these interference canceling techniques, predict their performance as accurately as possible -even under a number of impairments and non-idealities- and design accordingly in order to fully exploit them. In this paper, we investigate the effect of a practical impairment of great importance, namely, the attenuation due to the rain, on the performance of a return link which performs MMSE interference canceling. Analytical expressions are derived for a number of performance measures based on the statistical characterization of the rain attenuation.

%B 2012 6th Advanced Satellite Multimedia Systems Conference (ASMS) and 12th Signal Processing for Space Communications Workshop (SPSC) (ASMS/SPSC 2012) %C Baiona, Spain %G eng %R 10.1109/ASMS-SPSC.2012.6333078 %0 Journal Article %J EURASIP Journal on Wireless Communications and Networking %D 2012 %T Performance study of multiuser interference mitigation schemes for hybrid broadband multibeam satellite architectures %A Arnau, Jesus %A Bertrand Devillers %A C. Mosquera %A Ana Pérez-Neira %B EURASIP Journal on Wireless Communications and Networking %V 2012 %P 132 %G eng %U http://jwcn.eurasipjournals.com/content/2012/1/132 %R 10.1186/1687-1499-2012-132 %0 Conference Paper %B International Conference on Cloud Computing and Services Science (CLOSER) %D 2011 %T Encrypted Domain Processing for Cloud Privacy: Concept and Practical Experience %A Daniel A. Rodríguez-Silva %A F. Javier González-Castaño %A Lilian Adkinson-Orellana %A Alexandre Fernández-Cordeiro %A Juan Ramón Troncoso-Pastoriza %A Daniel González-Martínez %K cloud %K privacy %K security %K watermarking %B International Conference on Cloud Computing and Services Science (CLOSER) %C Noordwijkerhout, The Netherlands %8 May %G eng %0 Conference Paper %B IEEE GLOBECOM %D 2011 %T Hybrid Space-Ground Processing for High-Capacity Multi-beam Satellite Systems %A Arnau, Jesus %A Michael Bergmann %A Enzo Alberto Candreva %A Giovanni Emanuele Corazza %A Riccardo {De Gaudenzi} %A Bertrand Devillers %A Wilfried Gappmair %A Francesco Lombardo %A C. Mosquera %A Ana Pérez-Neira %A Ilaria Thibault %A Alessandro Vanelli-Coralli %B IEEE GLOBECOM %C Houston, Texas, USA %8 dec %G eng %0 Conference Paper %B International Workshop on Digital Watermarking (IWDW) %D 2011 %T Witsenhausen's counterexample and its links with multimedia security problems %A Pedro Comesaña %A Fernando Pérez-González %A Chaouki T. Abdallah %K control %K Multimedia security %K Witsenhausen's counterexample %B International Workshop on Digital Watermarking (IWDW) %C Atlantic City, USA %8 October %G eng %0 Journal Article %J Signal Processing %D 2010 %T Blind l_1-Norm-Based Phase Estimation for Cross-QAM Robust to Finite Precision Effects %A Marcos Álvarez-Díaz %A R. López-Valcarce %A Iago Gómez-Alonso %K blind phase estimation %K carrier offset %K cross-QAM constellations %K fixed point implementation %B Signal Processing %V 90 %P 2934-2948 %8 11/2010 %G eng %0 Thesis %D 2010 %T Design of Nonlinear Precoding and Estimation Schemes for Advanced Communication Systems %A Marcos Álvarez-Díaz %K adaptive signal processing %K satcom %V Ph.D. %8 04/2010 %G eng %9 Ph.D. thesis %0 Journal Article %J IEEE Transactions on Signal Processing %D 2010 %T SNR Estimation for Multilevel Constellations Using Higher-Order Moments %A Marcos Álvarez-Díaz %A R. López-Valcarce %A C. Mosquera %K Blind estimation %K higher-order statistics %K Moments-based estimation %K SNR estimation %B IEEE Transactions on Signal Processing %V 58 %P 1515–1526 %8 March %G eng %0 Conference Paper %B IEEE International Conference on Image Processing (ICIP) %D 2009 %T Modeling Magnitudes of Gabor Coefficients: The β-Rayleigh Distribution %A Daniel González-Jiménez %A Enrique Argones-Rúa %A Fernando Pérez-González %A José Luis Alba-Castro %K Gabor %K generalized Gaussian %K Rayleigh %K watermarking %B IEEE International Conference on Image Processing (ICIP) %I IEEE %C Cairo, Egypt %8 November %G eng %0 Conference Paper %B International Conference on Cognitive Radio Oriented Wireless Networks and Communications (Crowncom) %D 2009 %T Multiantenna detection of multicarrier primary signals exploiting spectral a priori information %A R. López-Valcarce %A Gonzalo Vázquez-Vilar %A Marcos Álvarez-Díaz %B International Conference on Cognitive Radio Oriented Wireless Networks and Communications (Crowncom) %C Hannover, Germany %8 June 22-24 %G eng %0 Conference Paper %B Advanced Satellite Mobile Systems Conference %D 2008 %T SNR Estimation with Heterogeneous Frames %A Marcos Álvarez-Díaz %A R. López-Valcarce %A C. Mosquera %B Advanced Satellite Mobile Systems Conference %C Bologna, Italy %8 August 26-28 %G eng %0 Conference Paper %B IEEE International Conference on Image Processing (ICIP) %D 2007 %T Benford's Law in Image Processing %A Fernando Pérez-González %A Gregory L. Heileman %A Chaouki T. Abdallah %K benford %K benford's-law %B IEEE International Conference on Image Processing (ICIP) %C San Antonio, TX, USA %8 September %G eng %0 Book %D 2007 %T Comunicaciones Digitales %A Antonio Artés-Rodríguez %A Fernando Pérez-González %A Jesús Cid-Sueiro %A R. López-Valcarce %A C. Mosquera %A Fernando Pérez-Cruz %I Pearson - Prentice Hall %8 May %G eng %0 Book Section %D 2007 %T Digital Satellite Communications %A R. Pedone %A G. Albertazzi %A P.T. Mathiopoulos %A C. Mosquera %A N. Sagias %A M. Villanti %I Springer %G eng %& Theoretical Background %0 Book Section %D 2007 %T Digital Satellite Communications %A A. A. Rontogiannis %A Marcos Álvarez-Díaz %A M. Casadei %A V. Dalakas %A A. Duverdier %A F. J. González-Serrano %A M. Iubatti %A T. Javornik %A L. Lapierre %A Neri, Massimo %A P. Salmi %I Springer %C New York %P - %8 April %G eng %& Distortion Countermeasures %0 Book Section %D 2007 %T Digital Satellite Communications %A Sandro Scalise %A L. Castanet %A M. Luglio %A Neri, Massimo %A Marcos Álvarez-Díaz %A J. Bito %A M. Bousquet %A I. Frigyes %A P. Horvath %A Axel Jahn %A M. Krejcarek %A J. Lemorton %A S. Morosi %A M. A. Vázquez-Castro %I Springer %C New York %P - %8 April %G eng %& Satellite Channel Impairments %0 Conference Paper %B European Control Conference (ECC) %D 2007 %T A Generalization of Benford's Law and Its Application to Images %A Fernando Pérez-González %A Gregory L. Heileman %A Chaouki T. Abdallah %K benford %K benford's-law %B European Control Conference (ECC) %C Kos, Greece %8 July %G eng %0 Conference Paper %B IEEE International Conference on Image Processing (ICIP) %D 2007 %T Modeling Gabor coefficients via Generalized Gaussian Distributions for face recognition %A Daniel González-Jiménez %A Fernando Pérez-González %A Pedro Comesaña %A Luis Pérez-Freire %A José Luis Alba-Castro %K biometrics %K face-recognition %B IEEE International Conference on Image Processing (ICIP) %C San Antonio, TX, USA %P 1261-1264 %8 September %G eng %0 Conference Paper %B International Workshop on Satellite and Space Communications (IWSSC) %D 2007 %T Non-Linear Interference Mitigation for Broadband Multimedia Satellite Systems %A Marcos Álvarez-Díaz %A Nicolas Courville %A C. Mosquera %A Gianluigi Liva %A Giovanni Emanuele Corazza %B International Workshop on Satellite and Space Communications (IWSSC) %C Salzburg, Austria %8 September 13-14 %G eng %0 Conference Paper %B Security, Steganography, and Watermarking of Multimedia Contents %D 2006 %T High-rate quantization data hiding robust to arbitrary linear filtering attacks %A Fernando Pérez-González %A C. Mosquera %A Marcos Álvarez-Díaz %A Reginald Lagendijk %E Edward J. Delp %E Ping W. Wong %K data-hiding %K watermarking %B Security, Steganography, and Watermarking of Multimedia Contents %S Proc. of SPIE %I SPIE %C San Jose, California, USA %V 5306 %P 592-601 %8 January %G eng %0 Journal Article %J IEE Proceedings on Information Security %D 2006 %T Improving the performance of RDM watermarking by means of trellis coded quantisation %A Andrea Abrardo %A Mauro Barni %A Fernando Pérez-González %A C. Mosquera %K data-hiding %K watermarking %B IEE Proceedings on Information Security %V 153 %P 107-114 %8 September %G eng %0 Conference Paper %B International Workshop on Satellite and Space Communications (IWSSC) %D 2006 %T Trellis Shaping Techniques for Satellite Telecommunication Systems %A Marcos Álvarez-Díaz %A Neri, Massimo %A C. Mosquera %A Giovanni Emanuele Corazza %K Digital Communications %K precoding %K satellite communications %B International Workshop on Satellite and Space Communications (IWSSC) %C Leganés, Spain %8 September %G eng %0 Conference Paper %B AIAA International Communications Satellite Systems Conference (ICSSC) %D 2005 %T Aeronautical Channel Model for Broadband L-Band Satellite Communication %A Madhavendra Richharia %A Naveen Kaluvala %A Panos Fines %A Marcos Álvarez-Díaz %A Axel Jahn %K Digital Communications %K L-Band %K satellite communications %B AIAA International Communications Satellite Systems Conference (ICSSC) %C Rome, Italy %8 September 25-28 %G eng %0 Conference Paper %B IEEE Workshop on Statistical Signal Processing (SSP) %D 2005 %T Diamond contour-based phase recovery for (cross-)QAM constellations %A Marcos Álvarez-Díaz %A R. López-Valcarce %K adaptive signal processing %K synchronization %B IEEE Workshop on Statistical Signal Processing (SSP) %C Bordeaux, France %G eng %R 10.1109/SSP.2005.1628678 %0 Conference Paper %B Security, Steganography, and Watermarking of Multimedia Contents %D 2005 %T Ensuring Gain Invariance in High-Rate Data-Hiding %A Fernando Pérez-González %A C. Mosquera %A Mauro Barni %A Andrea Abrardo %E Edward J. Delp %E Ping W. Wong %K data-hiding %K watermarking %B Security, Steganography, and Watermarking of Multimedia Contents %S Proc. of SPIE %I SPIE %C San Jose, California, USA %V 5306 %P 592-601 %8 January %G eng %0 Journal Article %J IEEE Transactions on Signal Processing %D 2005 %T Rational Dither Modulation: a high-rate data-hiding method robust to gain attacks %A Fernando Pérez-González %A C. Mosquera %A Mauro Barni %A Andrea Abrardo %K data-hiding %K watermarking %B IEEE Transactions on Signal Processing %V 53 %P 3960-3975 %8 October %G eng %0 Conference Paper %B Vehicular Technology Conference (VTC) %D 2004 %T Performance of Coding and Synchronization Schemes for a DVB-S Based Air-Interface in the Railway Environment %A Sandro Scalise %A Giorgio Sciascia %A Marcos Álvarez-Díaz %A Harald Ernst %A Rodolfo Mura %K Digital Communications %K DVB-S %K satellite communications %B Vehicular Technology Conference (VTC) %C Milano, Italy %V 1 %P 347-351 %8 May 17-19 %G eng %0 Conference Paper %B IEEE International Workshop on Multimedia Signal Processing %D 2004 %T Rational Dither Modulation: a novel data-hiding method robust to value-metric attacks %A Fernando Pérez-González %A Mauro Barni %A Andrea Abrardo %A C. Mosquera %K data-hiding %K watermarking %B IEEE International Workshop on Multimedia Signal Processing %C Siena, Italy %P 139-142 %8 29 Sept - 1 Oct %G eng %0 Conference Paper %B IST Mobile & Wireless Communications Summit %D 2003 %T Characterization of the Railroad Satellite Channel within the FIFTH Project %A Sandro Scalise %A Marcos Álvarez-Díaz %A Giorgio Sciascia %A Rodolfo Mura %K Digital Communications %K satellite communications %B IST Mobile & Wireless Communications Summit %C Aveiro, Portugal %8 June 15-18 %G eng %0 Conference Paper %B Baiona Workshop on Signal Processing in Communications %D 2003 %T DVB-S Air Interface over Railroad Satellite Channel: Performance and Extensions %A Marcos Álvarez-Díaz %A Sandro Scalise %A Giorgio Sciascia %A Rodolfo Mura %A Paolo Conforto %A Harald Ernst %K Digital Communications %K DVB-S %K satellite communications %B Baiona Workshop on Signal Processing in Communications %C Baiona, Spain %8 September 8-10 %G eng %0 Conference Paper %B International Conference on Advanced Satellite Mobile Systems (ASMS) %D 2003 %T Link Design for Satellite Based Services in the Fast Train Environment %A Sandro Scalise %A Paolo Conforto %A Marcos Álvarez-Díaz %A Giorgio Sciascia %A Rodolfo Mura %A Harald Ernst %K Digital Communications %K satellite communications %B International Conference on Advanced Satellite Mobile Systems (ASMS) %C ESRIN, Frascati, Italy %8 July 10-11 %G eng %0 Conference Paper %B AIAA International Communications Satellite Systems Conference (ICSSC) %D 2003 %T Link Performance for Mobile Satellite Based Services in Ku-Band %A Giorgio Sciascia %A Sandro Scalise %A Harald Ernst %A Marcos Álvarez-Díaz %A Matthias Holzbock %A Rodolfo Mura %K Digital Communications %K satellite communications %B AIAA International Communications Satellite Systems Conference (ICSSC) %C Yokohama, Japan %8 April 15-19 %G eng %0 Conference Paper %B International Workshop on Signal Processing for Space Communications (SPSC) %D 2003 %T Performance of DVB-S Air-Interface over Land Mobile Satellite Channel at Ku-Band for Fast Trains %A Marcos Álvarez-Díaz %A Sandro Scalise %A Giorgio Sciascia %A Rodolfo Mura %A Paolo Conforto %A Vincenzo Schena %A Harald Ernst %K Digital Communications %K DVB-S %K satellite communications %B International Workshop on Signal Processing for Space Communications (SPSC) %C Catania, Italia %8 September 24-26 %G eng %0 Journal Article %J Signal Processing: Image Communication %D 2002 %T Analysis of Pilot-Based Synchronization Algorithms for Watermarking of Still Images %A Manuel Alvarez-Rodríguez %A Fernando Pérez-González %K data-hiding %K watermarking %B Signal Processing: Image Communication %V 17 %P 661-633 %8 September %G eng %0 Journal Article %J International Journal of Acoustics and Vibration %D 2001 %T Adaptive IIR Filters for Active Noise Control %A C. Mosquera %A J.A. Gómez %A Fernando Pérez-González %A M. Sobreira %A E. Alexandre %K ANC %K IIR %K SPR %B International Journal of Acoustics and Vibration %V 6 %P 3-10 %G eng %0 Journal Article %J IEEE Transactions on Image Processing %D 2000 %T DCT-Domain Watermarking Techniques for Still Images: Detector Performance Analysis and a New Structure %A Juan R. Hernández %A Martín Amado %A Fernando Pérez-González %K data-hiding %K watermarking %B IEEE Transactions on Image Processing %V 9 %P 55–68 %8 January %G eng %0 Conference Paper %B Workshop on Nonlinear Signal and Image Processing %D 1999 %T Novel Detector Structures for Watermark Extraction in the DCT Domain %A Juan R. Hernández %A Martín Amado %A Fernando Pérez-González %K data-hiding %K watermarking %B Workshop on Nonlinear Signal and Image Processing %I IEEE-EURASIP %C Antalya, Turkey %8 June %G eng %0 Conference Paper %B COST #254 Int. Workshop on Intelligent Communications and Multimedia Terminals %D 1998 %T Improving DCT-Domain Watermark Extraction Using Generalized Gaussian Models %A Juan R. Hernández %A Fernando Pérez-González %A Martín Amado %K data-hiding %K watermarking %B COST #254 Int. Workshop on Intelligent Communications and Multimedia Terminals %C Ljubljana, Slovenia %P 23–26 %8 November %G eng