|Fernando Pérez-González||Adversarial Signal Processing||Contact Forum Coding Theory and Cryptography Talks: VI, The Royal Flemish Academy of Belgium for Science and the Arts, Brussels, Belgium.||Friday, October 2, 2015||
The aim of this talk is to present the basic theory of adversarial signal processing, with motivating examples taken from the fields of watermarking, multimedia forensics, traffic analysis, intrusion detection, biometrics, cognitive radio, etc. We will focus on adversarial hypothesis testing, which is arguably the best understood topic. As a fundamental approach we will show how to use game theory to model the available strategies to both defender and adversary.
|Fernando Pérez-González||Grissom in Awe: the CSI Effect and Media Forensics||IEEE-EURASIP Summer School in Signal Processing, Cavalese-Italy||Monday, September 5, 2016||
We have all seen it on TV: by hectically typing on a computer keyboard, the CSI guys are able to enhance a low–quality image up to a point where the perpetrator’s face (including his moles and pimples) is clearly visible. Surely, it is an exaggeration, but it has already created a lot of trouble in court, as the jurors’ expectations from prosecutors have skyrocketed. This is called "The CSI Effect". Paradoxically, Grissom would be shocked to learn the latest advances in multimedia forensics, as there is often a level of analysis that brings about much more than meets his eye.
|Fernando Pérez-González||Location privacy: Where do we stand and where are we going?||Keynote Talk at First EAI International Conference on Security and Privacy in New Computing Environments, Guanzghou, China||Thursday, December 15, 2016||
Over time, users have become accustomed to sharing personal data when they install new apps in their smartphones. Declining to do so, normally aborts the installation process. Sadly, users have convinced themselves that the value of their data is much lower than that of the apps they install, “after all, they have nothing to hide”. And thus, in redefining their business models many companies have touted better services and applications which even come for free, in exchange for some loss of privacy.
|Carlos Mosquera Nartallo||Link Adaptation in Mobile Satellite Links: Field Trial Results||Thursday, September 15, 2016||
Description of satellite link deployed to test the communication from an UAV. The transceiver, based on a Software-Defined Radio platform, operated in the S-band.
|Juan Ramón Troncoso Pastoriza||Secure Signal Processing for Outsourced Face Verification||Biométrie, Indexation multimédia et Vie privée, Télécom ParisTech||Tuesday, October 6, 2015||
Face recognition is one of the foremost applications in computer vision, but faces are inherently sensitive signals that comprise personal identifiable information. Therefore, they must be protected not only when they are stored and transferred, but also while they are processed in an untrustworthy outsourced environment. This is one of the goals of Secure Signal Processing (SSP).
|Anxo Tato Arias||Link Adaptation Algorithms for Dual Polarization Mobile Satellite Systems||Oxford, United Kingdom||Thursday, September 14, 2017||
The use of dual polarization in mobile satellite systems is very promising as a means for increasing the transmission capacity. In this paper a system which uses simultaneously two orthogonal polarizations in order to communicate with the users is studied. The application of MIMO signal processing techniques along with Adaptive Coding and Modulation in the forward link can provide remarkable throughput gains up to 100 % when compared with the single polarization system. The gateway is allowed to vary the MIMO and Modulation and Coding Schemes for each frame.
|Anxo Tato Arias||Evaluation of New Link Adaptation Techniques for Mobile Satellite Channels||Friday, October 2, 2015||
|Anxo Tato Arias||Link Adaptation in Mobile Satellite Links: Field Trial Results||Palma de Mallorca||Monday, May 9, 2016||
Slides of the presentation of the paper in the conference ASMS 2016, in Palma de Mallorca (Spain).
Topics: Adaptive Coding and Modulation, ACM, Link adaptation, BGAN, S-UMTS family SL, Software Defined Radio, SDR, UAV, mobile satellite communications, experiment, MEO satellite.
|Anxo Tato Arias||Evaluation of New Link Adaptation Techniques for Mobile Satellite Channels (galego)||Friday, October 2, 2015||
Diapositivas da defensa do Proxecto de Fin de Carreira.
|Anxo Tato Arias||Evaluation of New Link Adaptation Techniques for Mobile Satellite Channels (español)||Friday, October 2, 2015||
Diapositivas de la defensa del Proyecto de Fin de Carrera.