Consiglio Nazionale delle Ricerche

Tipo di prodottoContributo in atti di convegno
TitoloAn upper bound on the probability of instability of a DVB-T/H repeater with a digital echo canceller
Anno di pubblicazione2010
Affiliazioni autoriOreste Andrisano, Università di Bologna, associato IEIIT-CNR Davide Dardari , Università di Bologna, associato IEIIT-CNR Matteo Mazzotti, CNIT Flavio Zabini,
Autori CNR e affiliazioni
  • inglese
AbstractThe architecture of a digital On-Channel Repeater (OCR) for DVB-T/H signals is described in this paper. The presence of a coupling channel between the transmitting and the receiving antennas gives origin to one or more echoes, having detrimental effects on the quality of the repeated signal and critically affecting the overall system stability. A low-complexity echo canceller unit is then proposed, performing a coupling channel estimation based on the local transmission of low-power training signals. In particular, in this paper we focus on the stability issues which arise due to the non perfect echo cancellation. An upper bound on the probability of instability of the system is analytically found, providing useful guidelines for conservative OCR design, and some performance figures concerning different propagation scenarios are provided
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Parole chiaveDVB-T/H, Echo canceller, Stability issues, Training signal, Upper Bound
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Titolo convegno/congresso53rd IEEE Global Communications Conference, GLOBECOM 2010
Luogo convegno/congressoMiami, Florida, USA
Data/e convegno/congresso6 December 2010, 10 December 2010
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Note/Altre informazioniA complete view of the research activity evaluation has to take not only single papers into account, especially when both theoretical and experimental activities are carried out in the framework of industrial cooperations. Let me recall the following initiatives: - Wireless Communication Laboratory, WiLab, founded by Prof. Oreste Andrisano as a result of tight cooperation between the National Council of Research (CNR), University of Bologna and CNIT (Consorzio Nazionale Interuniversitario per le Telecomunicazioni) through a synergic action among professors and researchers of the following bodies: Universities of Bologna and Ferrara, IEIIT-CNR, CNIT and Fondazione Alma Mater (Alma Mater s.r.l.). . - Co-foundation of the Multimedia Communication Laboratory (CNIT in Naples). Prof. Andrisano has been the Lab's Director for three years, since its foundation (Labnet project). The following Professors/researchers have been involved in the activity coordinated by Prof. Andrisano Professors : M.Chiani, R.Verdone, Velio Tralli, Gianluca Mazzini, Davide Dardari Researchers: Andrea Conti, Gianni Pasolini, Andrea Giorgetti, Cristina De Castro, Alberto Zanella, Barbara Masini, Alessandro Bazzi Main Collaborators: Paolo Toppan, Andrea Toppan, Fabio Mantovani, Giovanni Chiurco, Flavio Zabini, Matteo Mazzotti, Rudi Bandiera, Raffaele Soloperto, Andrea Ravaioli, Alberto Roversi, Chiara Balzanelli, Laura Toni, Cristina La Palombara, Giacomo Leonardi, Thomas Pavani MAIN TESTBEDS PRODUCED IN THE FRAMEWORK OF THE THEORETICAL/EXPERIMENTAL RESEARCH ACTIVITY (further details are available on the website 1. DVS: Digital Video System- repeater with echo canceller (Project DVBT-2006, MetaSystem). It has been tested on the Wilab measurement bench on digtal transmission systems at the University of Bologna, with remote access (telemeasurement): also oriented to the investigation of digital television/cellular systems mutual interference (800 MHz bandwidth) 2. SHINE: Mobile network simulator. It is a software platform for performance analysis and design of heterogeneous wireless networks and vehicular networks. 3. INFOMOBILITY Integrated simulator of vehicular traffic and wireless networks (Pegasus project) 4. LABORATORIES Network for Telemeasurement and E-Learning (Teledoc 2 Project). This project has been awarded by the SEEL (Supporting Excellence in E-Learning -EU) as the best 2004 project in the field of E-Learning). 5. IMMERSIVE COMMUNICATION GUIDE SYSTEM: localization and virtual guide through indoor sensor network (ViCom project). This project brought to an intense, still ongoing, collaboration of A. Conti and D. Dardari with M.I.T. 6. SMART CITY Reconfigurable network of intelligent poles (Pegasus project) at Fondazione Alma Mater. 7. SENSOR NETWORK control system- at Fondazione Alma Mater. RESEARCH PROJECTS - The test bed set up can be led back to the following research projects, coordinated by Prof. Andrisano: Project Duration Funding Body Actuating body Amount - EURO MULTIMEDIA NATIONAL LEVEL 1998-2003 MIUR CNR 4.132.000,00 VICOM 2002-2006 MIUR IEIIT-CNR 919.000,00 WWLAN 2004-2005 Alenia Spazio IEIIT-CNR 337.000,00 TUSTY 1999-2003 Siemens Mobile Com. IEIIT-CNR 500.000,00 SACRA 2000-2004 Siemens Mobile Com. IEIIT-CNR +FAM-Alma Mater srl 400.000,00 TELEDOC2 NATIONAL LEVEL 2003-2005 MIUR CNIT 1.800.000,00 SUMMIT 2004-2006 Regione Emilia Romagna CNIT 189.000,00 INSEBALA 2004-2006 Regione Emilia Romagna CNIT 250.000,00 TRIP 2007-2009 Regione Piemonte IEIIT-CNR 800.000,00 DVBT 2006-2009 Meta System S.P.A. FAM/Alma Mater s.r.l. and IEIIT-CNR 1.950.000,00 PEGASUS 2009-2011 MISE IEIIT-CNR+FAM/Alma Mater srl 1.050.000,00 MAN YEAR RESEARCHER FUNDED IN THE FRAMEWORK OF THE PREVIOUS PROJECTS Number of man-year (Researcher) funded : 10,83 (2004-2010) - CNR at UniBo Number of man year (Researcher) funded 3 - UniBo through Fondazione Alma Mater Number of man year (Fellowship/phd ): 32,00 (2004-2010)
Strutture CNR
  • IEIIT — IEIIT - Sede secondaria di Bologna
Moduli CNR
  • ICT.P07.006.001 : Reti wireless per il monitoraggio ambientale e info-mobilità
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Tipo documento: application/pdf