Dr. Riccardo De Gaudenzi
European Space Agency, European Space and Technology Center (ESTEC), Keplerlaan 1, P.O Box 299 2200 AG Noordwijk The Netherlands
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Academic Career Length
35Years (1992-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications23 April 2007 in IEEE Transactions on Wireless Communications
Journal Article
ECEnrico Casini
Enrico Casini
Riccardo De GaudenziOHOscar Del Rio Herrero
Oscar Del Rio Herrero
In this paper a new multiple access scheme dubbed contention resolution diversity slotted ALOHA (CRDSA) is introduced and its performance and implementation are thoroughly analyzed. The scheme combines diversity transmission of data bursts with efficient interference cancellation techniques. It is shown that CRDSA largely outperforms the classical lotted ALOHA (SA) technique in terms of throughput under equal packet loss ratio conditions (e.g. 17-fold improvement at packet loss ratio = 2 middot 10-2). CRDSA allows to boost the performance of random access (RA) channels in the return link of interactive satellite networks, making RA very efficient and providing low latency for the transmission of small size sparse packets. Implementation-wise it is shown that the CRDSA technique can be easily integrated in systems equipped with digital burst demodulators.
1 January 2011 in IEEE Communications Surveys & Tutorials
Journal Article
PAPantelis-Daniel Arapoglou
Pantelis-Daniel ArapoglouKLKonstantinos Liolis
Konstantinos Liolis
MBMassimo Bertinelli
Massimo Bertinelli
Athanasios D. PanagopoulosPCPanayotis Cottis
Panayotis Cottis
Riccardo De GaudenziThe present article carries out a review of MIMO-based techniques that have been recently proposed for satellite communications. Due to the plethora of MIMO interpretations in terrestrial systems and the particularities of satellite communications, this review is built on two pillars, namely fixed satellite and mobile satellite. Special attention is given to the characteristics of the satellite channel, which will ultimately determine the viability of MIMO over satellite. Finally, some future research directions are identified.
1 May 2004 in International Journal of Satellite Communications and Networking
Journal Article
1 January 1992 in IEEE Journal on Selected Areas in Communications
Journal Article
6 September 2006 in IEEE Transactions on Wireless Communications
Journal Article
Riccardo De GaudenziAFAlbert Guillen i Fabregas
Albert Guillen i FabregasAMAlfonso Martinez
Alfonso MartinezThis paper investigates the performance of M-ary amplitude-phase shift keying (APSK) digital modulation over typical nonlinear satellite channels. The effect of the satellite nonlinearity is studied, and distortion pre- and post-compensation techniques for coded APSK are presented. Moreover, clock timing, signal amplitude and carrier phase recovery schemes are discussed. For the latter, a new class of non turbo decoder-aided closed-loop phase synchronizers featuring good performance and low complexity is studied. Finally, an end-to-end coded APSK system simulator inclusive of the satellite channel model and synchronization sub-systems is discussed and its performance compared to standard trellis-coded QAM concatenated with Reed-Solomon codes, showing a remarkable gain in both power and spectral efficiency. Coded APSK, recently selected for the new standard -DVB-S2- for digital video broadcasting and interactive broadband satellite services, is shown to represent a powerand spectral-efficient solution for satellite nonlinear channels
8 October 2012 in IEEE Transactions on Aerospace and Electronic Systems
Journal Article
OHOscar Del Rio Herrero
Oscar Del Rio Herrero
Riccardo De GaudenziThe work presented here describes the key design drivers and performance of a high efficiency satellite mobile messaging system well adapted to the machine-to-machine communication services targeting, in particular, the vehicular market. It is shown that the proposed return link multiple access solution is providing a random access channel (RACH) aggregated spectral efficiency around 2 bit/s/Hz in the presence of power unbalance with reliable packet delivery over typical land mobile satellite (LMS) channels.
About Me
Riccardo De Gaudenzi received his MsC degree in Electronic Engineering from the University of Pisa, Italy, in 1985 and his PhD from the Technical University of Delft, the Netherlands, in 1999. From 1986 to 1988, he was with the European Space Agency (ESA) Ground Stations and Communications Engineering Department. In 1988, he joined ESAs Research and Technology Centre, the Netherlands, where he has been covering several technical and managerial positions inside the Directorate of Technology, Engineering and Quality. He is currently the Head of the ESA’s Electrical Engineering Department. The department covers radiofrequency systems and payloads for navigation, telecommunication TT&C and Earth observation, EEE components and microelectronics, data handling systems, power systems and energy sources, electromagnetic compatibility, space environments and their effects. The department is equipped with state-of-the-art laboratory facilities covering the different technical areas. Dr. De Gaudenzi has contributed to 8 space communication standards, authored or co-authored more than 70 full papers in peer-reviewed journals and 3 books and holds 28 patents.