%0 Journal Article %J IEEE Transactions on Wireless Communications %D 2019 %T Partial-Duplex Amplify-and-Forward Relaying: Spectral Efficiency Analysis under Self-Interference %A R. López-Valcarce %A C. Mosquera %K full-duplex %K myrada %K winter %X
We propose a novel mode of operation for Amplify-and-
Forward relays in which the spectra of the relay input and
output signals partially overlap. This partial-duplex relaying mode
encompasses half- and full-duplex as particular cases. By viewing
the partial-duplex relay as a bandwidth-preserving Linear
Periodically Time-Varying system, a spectral efficiency analysis
under self-interference is developed. In contrast with previous
works, self-interference is regarded as a useful informationbearing
component rather than simply assimilated to noise. This
approach reveals that previous results regarding the impact of
self-interference on (full-duplex) relay performance are overly
pessimistic. Based on a frequency-domain interpretation of the
effect of self-interference, a number of suboptimal decoding
architectures at the destination node are also discussed. It is found
that the partial-duplex relaying mode may provide an attractive
tradeoff between spectral efficiency and receiver complexity.
%B IEEE Transactions on Wireless Communications %V 18 %P 2271-2285 %8 04/2019 %G eng %N 4 %R 10.1109/TWC.2019.2902390 %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 Journal Article %J IEEE Trans. Signal Processing %D 2015 %T Cramér-Rao Bounds for SNR Estimation of Oversampled Linearly Modulated Signals %A R. López-Valcarce %A J. Villares %A J. Riba %A W. Gappmair %A C. Mosquera %K adaptive signal processing %K compass %K Cramér-Rao bound (CRB) %K dynacs %K oversampling %K Signal-to-noise ratio (SNR) %X
Most Signal-to-noise ratio (SNR) estimators use the
receiver matched filter output sampled at the symbol rate, an
approach which does not preserve all information in the analog
waveform due to aliasing. Thus, it is relevant to ask whether
avoiding aliasing could improve SNR estimation. To this end, we
compute the corresponding data-aided (DA) and non-data-aided
(NDA) Cramér-Rao bounds (CRBs). We adopt a novel dual filter
framework, which is shown to be information-preserving under
suitable conditions and considerably simplifies the analysis. It is
shown that the CRB can be substantially reduced by exploiting
any available excess bandwidth, depending on the modulation
scheme, the SNR range, and the estimator (DA or NDA) type.
%B IEEE Trans. Signal Processing %V 63 %P 1675-1683 %8 04/2015 %G eng %N 7 %& 1675 %R 10.1109/TSP.2015.2396013 %0 Conference Paper %B IEEE International Conference on Communications (ICC) %D 2015 %T Frequency Reuse in Dual Satellite Settings: an Initial Evaluation of Full Duplex Operation %A D. Martiñán-Otero %A C. Mosquera %K compass %K full duplex %K satcom %B IEEE International Conference on Communications (ICC) %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 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 The Tenth International Symposium on Wireless Communication Systems 2013 (ISWCS 2013) %D 2013 %T Analytical Characterization of the Single Frequency Network Gain Using Effective SNR Metrics %A Alberto Rico-Alvariño %A C. Mosquera %K broadcasting %K dynacs %K Effective SNR metrics %K Single Frequency Network %X

The design of broadcasting networks operating in a single frequency way is challenging due to the difficulty of predicting the performance in a frequency selective channel, caused by natural multipath and echoes coming from different transmitters. In this paper we resort to the use of frame error rate prediction metrics (also known as effective SNR metrics) to characterize the performance gain (or loss) under different multipath and SNR regimes in a simplified scenario with two transmitters. The analysis shows clearly that receivers with a dominant line of sight reception and high SNR are more sensitive to the presence of echoes, while those users in low SNR or strong multipath conditions are easily enforced by the insertion of a second transmitter.

%B The Tenth International Symposium on Wireless Communication Systems 2013 (ISWCS 2013) %C Ilmenau, Germany %G eng %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 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 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 2012 6th Advanced Satellite Multimedia Systems Conference (ASMS) and 12th Signal Processing for Space Communications Workshop (SPSC) (ASMS/SPSC 2012) %D 2012 %T On the Effect of Echoes in Hybrid Terrestrial-Satellite Single Frequency Networks: Analysis and Countermeasures %A Alberto Rico-Alvariño %A C. Mosquera %K dynacs %K Effective SNR %K Hybrid Terrestrial- Satellite %K satcom %K Satellite OFDM %K Single Frequency Network %K Space-Time Coding %X

Hybrid Terrestrial Satellite Single Frequency Networks achieve large spectral efficiencies due to a higher frequency reuse, which is attained by transmitting the same waveform in the same frequency band from satellite and terrestrial transmitters. However, the presence of multiple transmitters propitiates the existence of the so-called SFN echoes, which can degrade the system performance even if they arrive within the OFDM guard interval. In this paper we characterize this effect by resorting to PER prediction metrics (or effective SNR metrics), and analyze two simple preprocessing schemes that mitigate this degradation: the use of Alamouti space-time codes, and a convenient prefiltering at the terrestrial transmitter.

%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.2012.6333071 %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 Asilomar Conference on Signals, Systems, and Computers %D 2012 %T Optimum Training for CSI Acquisition in Cognitive Radio Channels %A Alberto Rico-Alvariño %A C. Mosquera %K adaptive signal processing %K cognitive radio %K dynacs %B Asilomar Conference on Signals, Systems, and Computers %C Pacific Grove, CA %G eng %R 10.1109/ACSSC.2012.6488973 %0 Journal Article %J IEEE Transactions on Wireless Communications %D 2012 %T Overlay Cognitive Transmission in a Multicarrier Broadcast Network with Dominant Line of Sight Reception %A Alberto Rico-Alvariño %A C. Mosquera %A Fernando Pérez-González %K cognitive radio %K dynacs %K satcom %B IEEE Transactions on Wireless Communications %G eng %R 10.1109/TWC.2012.092112.120257 %0 Conference Paper %B 3rd International Workshop on Cognitive Information Processing (CIP) %D 2012 %T Overlay cognitive transmission in OFDM point to point systems exploiting primary feedback %A Alberto Rico-Alvariño %A C. Mosquera %K cognitive radio %K dynacs %X

A secondary user that tries to reuse the spectrum allocated to a primary user can exploit the knowledge of the primary message to perform this task. In particular, the overlay  cognitive radio paradigm postulates the use of a fraction of the available power at the secondary transmitter to convey the primary message, so the spectral efficiency of the primary  system is increased, and, therefore, some transmission resources (time slots or frequency bands) can be released to the secondary transmission while the primary user rate is kept constant. The fraction of released resources can be incremented if some channel state information is available at the secondary transmitter. In this paper, we present a scenario where the secondary transmitter maximizes the primary link quality (measured in terms of Effective SNR), and obtains its channel state information by exploiting the primary user SNR-based feedback.

%B 3rd International Workshop on Cognitive Information Processing (CIP) %C Baiona, Galicia, Spain %8 05/2012 %G eng %R 10.1109/CIP.2012.6232932 %0 Conference Proceedings %B IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN 2012) %D 2012 %T Overlay Spectrum Reuse in a Broadcast Network: Covering the Whole Grayscale of Spaces %A Alberto Rico-Alvariño %A C. Mosquera %K cognitive radio %K dynacs %B IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN 2012) %C Bellevue, WA %G eng %R 10.1109/DYSPAN.2012.6478172 %0 Conference Paper %B The 13th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012) %D 2012 %T Overlay Spectrum Reuse in a Multicarrier Broadcast Network: Coverage Analysis %A Alberto Rico-Alvariño %A C. Mosquera %A Fernando Pérez-González %K cognitive radio %K dynacs %X

A secondary cognitive user overlaying its message in a broadcast multicarrier network is studied. The secondary user exploits the primary message knowledge to convey its own information while preserving the primary user coverage area, determined by a bound on the BER, and taking into account the degradation due to the insertion of an echo in a dominant line of sight environment. The results are compared with those obtained when the coverage area is defined in capacity terms, and regardless of the degradation caused by the secondary replica of the primary message.

%B The 13th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012) %C Cesme, Turkey %G eng %R 10.1109/SPAWC.2012.6292889 %0 Conference Paper %B The 13th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012) %D 2012 %T Overlay Spectrum Reuse in a Multicarrier Broadcast Network: Single Receiver Analysis %A Alberto Rico-Alvariño %A C. Mosquera %A Fernando Pérez-González %K cognitive radio %K dynacs %X

The overlay cognitive radio paradigm presents a framework where a secondary user exploits the knowledge of the primary user's message to improve spectrum utilization. A multicarrier broadcast network is one of the scenarios where this knowledge is possible: the secondary user could join a single frequency network and, therefore, gain access to the primary message. However, if the primary signal is received with a strong line of sight component, its relaying from the secondary transmitter does not suffice to ensure the primary user quality of service. In this paper we study the scenario where a secondary transmitter maximizes its own transmission rate, keeping the quality of a primary receiver over a given threshold. The analytical results, based on bit error rate bounds, are verified by means of software simulations and hardware tests.

%B The 13th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012) %C Cesme, Turkey %G eng %R 10.1109/SPAWC.2012.6292890 %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 Cognitive Radio and Advanced Spectrum Management %D 2011 %T On the Co-existence of Primary and Secondary Transmitters in a Broadcast Network %A Alberto Rico-Alvariño %A C. Mosquera %A Fernando Pérez-González %K Broadcast %K cognitive radio %K Overlay %K Single Frequency Network %B International Conference on Cognitive Radio and Advanced Spectrum Management %C Barcelona, Catalonia, Spain %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 IEEE GLOBECOM %D 2011 %T Joint Linear Precoding and Beamforming for the Forward Link of Multi-Beam Broadband Satellite Systems %A Bertrand Devillers %A Ana Isabel Perez %A C. Mosquera %B IEEE GLOBECOM %C Houston, Texas, USA %G eng %0 Journal Article %J IEEE Transactions on Vehicular Technology %D 2010 %T Dynamic spectrum leasing (DSL): A new paradigm for spectrum sharing in cognitive radio networks %A Sudhaman K. Jayaweera %A Gonzalo Vázquez-Vilar %A C. Mosquera %K cognitive radio %K DSL %K dynamic spectrum access %K dynamic spectrum leasing %K dynamic spectrum sharing %K game theory %K power control %B IEEE Transactions on Vehicular Technology %V 59 %P 2328-2339 %G eng %0 Conference Paper %B ICC Workshop on Cognitive Radio Interfaces and Signal Processing (ICC CRISP) %D 2010 %T Dynamic Spectrum Leasing (DSL) in Dynamic Channels %A Georges El-Howayek %A Sudhaman K. Jayaweera %A Kamrul Hakim %A Gonzalo Vázquez-Vilar %A C. Mosquera %K cognitive radio %K DSL %K dynamic spectrum leasing %K game theory %K Rayleigh fading %K time-varying channels %K time-varying secondary system %B ICC Workshop on Cognitive Radio Interfaces and Signal Processing (ICC CRISP) %C Cape Town, South Africa %8 May 23 %G eng %0 Journal Article %J IEEE Transactions on Wireless Communications %D 2010 %T Efficient Dynamic Spectrum Sharing in Cognitive Radio Networks: Centralized Dynamic Spectrum Leasing (C-DSL) %A Kamrul Hakim %A Sudhaman K. Jayaweera %A Georges El-Howayek %A C. Mosquera %B IEEE Transactions on Wireless Communications %V 9 %P 2956-2967 %G eng %0 Journal Article %J IEEE Signal Processing Letters %D 2010 %T Joint NDA Estimation of Carrier Frequency/Phase and SNR for Linearly Modulated Signals %A Wilfried Gappmair %A R. López-Valcarce %A C. Mosquera %K Carrier offset estimation %K Cramer-Rao lower bound %K expectation-maximization algorithm %K SNR estimation %B IEEE Signal Processing Letters %V 17 %P 517-520 %8 05/2010 %G eng %0 Conference Paper %B Advanced Satellite Multimedia Systems Conference (ASMA) %D 2010 %T Performance Analysis of Distributed Tracking with Consensus on Noisy Time-Varying Graphs %A Yongxiang Ruan %A Sudhaman K. Jayaweera %A C. Mosquera %K connectivity graph %K distributed local Kalman filtering %K distributed tracking %K distributed tracking with consensus %K graph topology %K network theory (graphs) %K noisy communications links %K noisy time-varying graphs %K performance analysis %K telecommunication links %K telecommunication network topology %K time-varying network topology %K time-varying systems %B Advanced Satellite Multimedia Systems Conference (ASMA) %C Cagliari, Italy %P 395-400 %G eng %0 Journal Article %J IEEE Transactions on Wireless Communications %D 2010 %T Primary User Enters the Game: Performance of Dynamic Spectrum Leasing in Cognitive Radio Networks %A Gonzalo Vázquez-Vilar %A C. Mosquera %A Sudhaman K. Jayaweera %B IEEE Transactions on Wireless Communications %G eng %0 Conference Paper %B IEEE International Conference on Image Processing (ICIP) %D 2010 %T On the Role of Differentiation for Resampling Detection %A Nahuel Dalgaard %A C. Mosquera %A Fernando Pérez-González %K cyclostationarity %K Image forensics %K interpolation %K prefiltering %K resampling detection %K watermarking %B IEEE International Conference on Image Processing (ICIP) %I IEEE %C Hong Kong, China %8 September %G eng %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 Journal Article %J IEEE Signal Processing Letters %D 2010 %T Stepsize Sequence Design for Distributed Average Consensus %A C. Mosquera %A R. López-Valcarce %A Sudhaman K. Jayaweera %B IEEE Signal Processing Letters %V 17 %P 169-172 %8 Feb %G eng %0 Conference Paper %B IEEE International Conference on Image Processing (ICIP) %D 2010 %T Two-dimensional Statistical Test for the Presence of Almost Cyclostationarity on Images %A David Vázquez-Padín %A C. Mosquera %A Fernando Pérez-González %K cyclostationarity %K Image forensics %K interpolation %K resampling factor estimation %K spatial transformation %K watermarking %X

In this work, we study the presence of almost cyclostationary fields in images for the detection and estimation of digital forgeries. The almost periodically correlated fields in the two-dimensional space are introduced by the necessary interpolation operation associated with the applied spatial transformation. In this theoretical context, we extend a statistical time-domain test for presence of cyclostationarity to the two-dimensional space. The proposed method allows us to estimate the scaling factor and the rotation angle of resized and rotated images, respectively. Examples of the output of our method are shown and comparative results are presented to evaluate the performance of the two-dimensional extension.

%B IEEE International Conference on Image Processing (ICIP) %I IEEE %C Hong Kong, China %P 1745-1748 %8 09/2010 %G eng %R 10.1109/ICIP.2010.5652513 %0 Conference Paper %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %D 2010 %T Wideband Spectral Estimation from Compressed Measurements Exploiting Spectral a priori Information in Cognitive Radio Systems %A Gonzalo Vázquez-Vilar %A R. López-Valcarce %A C. Mosquera %A Nuria González-Prelcic %K cognitive radio %K compressive sampling %K Spectral estimation %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %C Dallas, U.S.A. %8 March 14-19 %G eng %0 Journal Article %J IEEE Transactions on Communications %D 2009 %T Cramer-Rao Lower Bound and EM Algorithm for Envelope-Based SNR Estimation of Nonconstant Modulus Constellations %A Wilfried Gappmair %A R. López-Valcarce %A C. Mosquera %B IEEE Transactions on Communications %V 57 %P 1622 - 1627 %8 june %G eng %0 Conference Paper %B Asilomar Conference on Signals, Systems and Computers %D 2009 %T A Dynamic Spectrum Leasing (DSL) Framework for Spectrum Sharing in Cognitive Radio Networks %A Sudhaman K. Jayaweera %A C. Mosquera %B Asilomar Conference on Signals, Systems and Computers %G eng %0 Conference Paper %B IEEE Broadband Wireless Access Workshop %D 2009 %T A Unified Framework for Dynamic Spectrum Leasing (DSL) in Cognitive Radios %A Sudhaman K. Jayaweera %A Kamrul Hakim %A C. Mosquera %B IEEE Broadband Wireless Access Workshop %G eng %0 Conference Paper %B Sensor, Signal and Information Processing (SenSIP) Workshop %D 2008 %T Distributed Estimation: Do Not Trust Gossips %A C. Mosquera %A Sudhaman K. Jayaweera %K distributed estimation %K sensor network %B Sensor, Signal and Information Processing (SenSIP) Workshop %C Sedona (Arizona) %G eng %0 Conference Paper %B IEEE International Workshop on Signal Processing Advances in Wireless Communications %D 2008 %T Distributed Estimation with Noisy Exchanges %A C. Mosquera %A R. López-Valcarce %A Sudhaman K. Jayaweera %K distributed estimation %K sensor network %B IEEE International Workshop on Signal Processing Advances in Wireless Communications %C Recife, Brazil %G eng %0 Journal Article %J IEEE Signal Processing Letters %D 2008 %T Distributed Sequential Estimation with Noisy, Correlated Observations %A Sudhaman K. Jayaweera %A C. Mosquera %B IEEE Signal Processing Letters %V 15 %G eng %0 Conference Paper %B IEEE Sensor Array and Multichannel Signal Processing Workshop %D 2008 %T Entangled Kalman Filters for Cooperative Estimation %A C. Mosquera %A Sudhaman K. Jayaweera %K distributed estimation %K sensor network %B IEEE Sensor Array and Multichannel Signal Processing Workshop %C Darmstadt (Germany) %G eng %0 Conference Paper %B IEEE International Workshop on Signal Processing Advances in Wireless Communications %D 2008 %T Maximum Likelihood SNR Estimation for Asynchronously Oversampled OFDM Signals %A R. López-Valcarce %A C. Mosquera %K estimation %K ML %K OFDM %K SNR %B IEEE International Workshop on Signal Processing Advances in Wireless Communications %C Recife, Brazil %G eng %0 Conference Paper %B International Symposium on Communication Systems, Networks and Signal Processing (CNSDSP) %D 2008 %T ML and EM Algorithm for non-data-aided SNR Estimation of Linearly Modulated Signals %A Wilfried Gappmair %A R. López-Valcarce %A C. Mosquera %K EM %K ML %K SNR estimation %B International Symposium on Communication Systems, Networks and Signal Processing (CNSDSP) %P 530-534 %G eng %0 Journal Article %J IEEE Transactions on Signal Processing %D 2008 %T Non-Data-Aided Symbol Rate Estimation of Linearly Modulated Signals %A C. Mosquera %A Sandro Scalise %A R. López-Valcarce %B IEEE Transactions on Signal Processing %8 February %G eng %0 Journal Article %J IEEE Transactions on Information Forensics and Security %D 2008 %T Quantization-Based Data-Hiding Robust to Linear Time-Invariant Filtering %A Fernando Pérez-González %A C. Mosquera %K data-hiding %K watermarking %B IEEE Transactions on Information Forensics and Security %V 3 %P 137-152 %8 June %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 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 C. Mosquera %A M. L. Boucheret %A M. Bousquet %A S. Cioni %A Wilfried Gappmair %A R. Pedone %A Sandro Scalise %A P. Skoutaridis %A M. Villanti %I Springer %G eng %& Parameter Estimation and Synchronization %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 Conference Paper %B IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %D 2007 %T Iterative Envelope-Based SNR Estimation for Non-Constant Modulus Constellations %A R. López-Valcarce %A C. Mosquera %A Wilfried Gappmair %K EM %K SNR %K synchronization %B IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %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 International Workshop on Satellite and Space Communications (IWSSC) %D 2007 %T Satellite Communications: Research Trends and Open Issues %A Alessandro Vanelli-Coralli %A Giovanni Emanuele Corazza %A G.K. Karagiannidis %A P.T. Mathiopoulos %A D.S. Michalopoulos %A C. Mosquera %A S. Papaharalabos %A Sandro Scalise %K satellite communications %B International Workshop on Satellite and Space Communications (IWSSC) %G eng %0 Journal Article %J IEEE Communications Letters %D 2007 %T Sixth-Order Statistics-Based Non-Data-Aided SNR Estimation %A R. López-Valcarce %A C. Mosquera %B IEEE Communications Letters %V 11 %P 351-353 %8 April %G eng %0 Conference Paper %B IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %D 2006 %T Blind carrier phase estimation for non-equiprobable constellations %A R. López-Valcarce %A C. Mosquera %K Digital Communications %K phase estimation %K signal shaping %K synchronization %K Tomlinson-Harashima precoding %B IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %C Cannes, France %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 Signal Processing for Space Communications (SPSC) %D 2006 %T Symbol-Rate Estimation for DVB-S2 Broadcasting %A C. Mosquera %A Sandro Scalise %A R. López-Valcarce %K DVB %K symbol rate %K synchronization %B International Workshop on Signal Processing for Space Communications (SPSC) %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 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 European Signal Processing Conference (EUSIPCO) %D 2004 %T Bias analysis and removal of a microphone array based road traffic speed estimator %A R. López-Valcarce %A D. Hurtado %A C. Mosquera %A Fernando Pérez-González %K microphone arrays %K speed estimation %K traffic monitoring %B European Signal Processing Conference (EUSIPCO) %C Vienna, Austria %G eng %0 Journal Article %J EURASIP Journal of Applied Signal Processing %D 2004 %T Estimation of road vehicle speed using two omnidirectional microphones: a maximum likelihood approach %A R. López-Valcarce %A C. Mosquera %A Fernando Pérez-González %K microphone arrays %K speed estimation %K traffic monitoring %B EURASIP Journal of Applied Signal Processing %V 2004 %P 1059–1077 %8 August %G eng %0 Conference Paper %B International Symposium on Power Line Communications and Its Applications (ISPLC) %D 2004 %T POLI-MAS: Power-Line Multichannel Audio System %A Fernando J. Mato-Méndez %A C. Mosquera %K audio %K multichannel %K PLC %B International Symposium on Power Line Communications and Its Applications (ISPLC) %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 International Workshop on Signal Processing for Space Communications (SPSC) %D 2003 %T Feedback Timing Synchronization for IF-Sampled Systems %A C. Mosquera %A M. Cacheda %K PLC %B International Workshop on Signal Processing for Space Communications (SPSC) %G eng %0 Conference Paper %B International Symposium on Power Line Communications and Its Applications (ISPLC) %D 2003 %T Indoor Image Acquisition and Distribution System %A D. Fondo %A M. Cacheda %A C. Mosquera %K PLC %B International Symposium on Power Line Communications and Its Applications (ISPLC) %G eng %0 Conference Paper %B International Symposium on Power Line Communications and Its Applications (ISPLC) %D 2003 %T A low complexity all-digital DS-SS transceiver for power-line communications %A M. Ferreiro %A M. Cacheda %A C. Mosquera %K DS-SS %K modem %K PLC %B International Symposium on Power Line Communications and Its Applications (ISPLC) %G eng %0 Conference Paper %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %D 2002 %T Road vehicle speed estimation from a two-microphone array %A Fernando Pérez-González %A R. López-Valcarce %A C. Mosquera %K microphone arrays %K speed estimation %K traffic monitoring %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %C Orlando, FL, USA %V 2 %P 1321–1324 %G eng %0 Conference Paper %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %D 2002 %T Spectral characterization of feedback linear periodically time-varying systems %A C. Mosquera %A Sandro Scalise %A G. Taricco %K burst %K inversion %K LPTV %K PLL %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %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 Automatica %D 2001 %T Algebraic solution to the robust SPR problem for two polynomials %A C. Mosquera %A Fernando Pérez-González %K robust %K SPR %B Automatica %V 37 %8 may %G eng %0 Conference Paper %B International Symposium on Power Line Communications and Its Applications (ISPLC) %D 2001 %T A Channel Model for the Galician Low Voltage Main Network %A Nuria González-Prelcic %A C. Mosquera %A Norberto Degara-Quintela %A A. Currais %B International Symposium on Power Line Communications and Its Applications (ISPLC) %C Malmo, Sweden %8 April %G eng %0 Journal Article %J Automatica %D 2001 %T On the strengthened robust SPR problem for discrete-time systems %A C. Mosquera %A Fernando Pérez-González %K robust %K SPR %K strengthened %B Automatica %V 37 %P 625-628 %8 apr %G eng %0 Conference Paper %B International Workshop on Digital Signal Processing Techniques for Space Communications (DSP) %D 2001 %T Time-transfer performance in burst-mode communication systems %A C. Mosquera %A Sandro Scalise %A G. Taricco %A D. Giunta %K burst %K PLL %K synchronization %B International Workshop on Digital Signal Processing Techniques for Space Communications (DSP) %G eng %0 Journal Article %J IEEE Journal on Selected Areas in Communications %D 2001 %T Time-transfer performance in burst-mode communication systems %A C. Mosquera %A Sandro Scalise %A G. Taricco %A G. Garofalo %A D. Giunta %K burst %K PLL %K synchronization %B IEEE Journal on Selected Areas in Communications %V 19 %P 2310-2319 %8 dec %G eng %0 Journal Article %J Signal Processing %D 2000 %T Convergence analysis of the multiple-channel filtered-U recursive LMS algorithm for active noise control %A C. Mosquera %A Fernando Pérez-González %K ANC %K FuRLMS %K SPR %B Signal Processing %V 80 %P 849-856 %G eng %0 Journal Article %J IEEE Transactions on Signal Processing %D 1999 %T Hyperstable adaptive IIR algorithms with polyphase structures: analysis and design %A R. López-Valcarce %A C. Mosquera %A Fernando Pérez-González %K adaptive IIR filters %K system identification %B IEEE Transactions on Signal Processing %V 47 %P 2043–2046 %8 July %G eng %0 Conference Paper %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %D 1999 %T Hyperstable polyphase adaptive IIR filters %A C. Mosquera %A Fernando Pérez-González %A R. López-Valcarce %K adaptive IIR filters %K system identification %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %C Phoenix, AZ, USA %V 4 %P 1841–1844 %G eng %0 Conference Paper %B International Congress on Sound and Vibration %D 1999 %T IIR adaptive filters for active noise control %A C. Mosquera %A J.A. Gómez %A Fernando Pérez-González %A M. Sobreira %K ANC %K IIR %K SPR %B International Congress on Sound and Vibration %C Copenhagen, Denmark %G eng %0 Journal Article %J Signal Processing %D 1999 %T The robust SPR problem: design algorithms and new applications %A C. Mosquera %A L. Leyra %A Fernando Pérez-González %K robust %K SPR %B Signal Processing %V 76 %P 269-283 %G eng %0 Conference Paper %B American Control Conference %D 1998 %T An approach to the robust SPR problem through interpolation and avoidance: connections with the robust stability problem %A C. Mosquera %A Fernando Pérez-González %K avoidance %K interpolation %K robust %K SPR %B American Control Conference %G eng %0 Journal Article %J IEEE Transactions on Automatic Control %D 1998 %T On the bias of the modified output error algorithm %A C. Mosquera %A R. López-Valcarce %A Fernando Pérez-González %K adaptive IIR filters %K system identification %B IEEE Transactions on Automatic Control %V 43 %P 1261–1262 %8 September %G eng %0 Conference Paper %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %D 1998 %T Filtered error adaptive IIR algorithms and their application to active noise control %A C. Mosquera %A J.A. Gómez %A Fernando Pérez-González %K adaptive %K IIR %K SPR %B IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) %G eng %0 Thesis %D 1998 %T Relaxation of the SPR condition with applications to the convergence of adaptive recursive algorithms %A C. Mosquera %I University of Vigo, Spain %G eng %9 phd %0 Book Section %B Mathematics in Signal Processing %D 1998 %T The Simultaneous Strict Positive Real Problem: Similarities with the Simultaneous Stability Problem and Applications in Adaptive Recursive Algorithms %A C. Mosquera %A Fernando Pérez-González %E J.G. McWhirter %E I.K. Proudler %K robust %K SPR %B Mathematics in Signal Processing %I Oxford University Press %P 139-148 %G eng %0 Conference Paper %B American Control Conference %D 1998 %T On the strengthened robust SPR problem for discrete-time systems %A C. Mosquera %A Fernando Pérez-González %B American Control Conference %G eng %0 Journal Article %J Automatica %D 1997 %T An Algorithm for Interpolation with Positive Rational Functions on the Imaginary Axis %A C. Mosquera %A Fernando Pérez-González %K interpolation %K SPR %B Automatica %V 33 %P 2277-2280 %G eng %0 Book Section %B Intelligent methods in signal processing and communications %D 1997 %T Analysis and Synthesis Tools for Robust SPRness %A C. Mosquera %A Juan R. Hernández %A Fernando Pérez-González %E A. Figueiras %E D. Docampo %E Fernando Pérez-González %K robust %K SPR %B Intelligent methods in signal processing and communications %I Birkhauser %P 147-171 %G eng %0 Conference Paper %B IFAC World Congress %D 1996 %T Characterization and Algebraic Solution to the Extreme-Point Robust SPR Problem %A Fernando Pérez-González %A C. Mosquera %K robust %K SPR %B IFAC World Congress %C San Francisco, CA, USA %P 391-396 %G eng %0 Conference Paper %B IEEE Conference on Decision and Control (CDC) %D 1995 %T Algebraic LTI Filter Synthesis for Simultaneously Making a Convex Combination of Discrete-Time Plants SPR %A Fernando Pérez-González %A C. Mosquera %K robust %K SPR %B IEEE Conference on Decision and Control (CDC) %C New Orleans, LA %P 780-781 %G eng