Analysis of coexistence and mutual interference between mobile and digital television systems

Main Article Content

Alessandro Guidotti
Paolo Grazioso
Marina Barbiroli
Claudia Carciofi
Doriana Guiducci
Guido Riva

Abstract

The ever increasing demand for multimedia wireless communication systems is a key feature of more advanced markets. The buzzwords of personal communications, meant to provide “access to anyone, anywhere, at anytime to the wanted service”, implies that radio spectrum demands are dramatically increasing in most developed markets. The last World Radiocommunication Conference (WRC-07) allocated on a co-primary basis the upper part of the UHF band to mobile services as from 2015 in Region 1, taking advantage of the Digital Dividend due to the higher spectrum efficiency of digital TV with respect to the analogue system. This will cause potentially harmful mutual interference between TV and mobile radio services, that needs to be carefully analysed. In this paper we present a study of the co-channel interference problem, proposing a methodology to take into account the mutual interference between a LTE mobile network and a DVB-T system and highlighting the different behaviour of the two radio links.

Article Details

Section
Original Research
Author Biographies

Alessandro Guidotti, DEIS - Università di Bologna

He was born in Popoli on December 14th 1983, obtained in October 2008 the Master Degree in Telecommunications Engineering (magna cum laude) from the University of Bologna. Since January 2009, he is a Ph.D. student at the University of Bologna with funds from Fondazione Ugo Bordoni. His research interests are in the vast field of spectrum management and cognitive radios. During the Ph.D. activity, he spent 6 months at SUPELEC (Paris) as visitor researcher, working on statistical characterization of interference using stochastic geometry techniques. He represented Italy in CEPT SE43 meetings and is TPC member and reviewer for major conferences and journals.

Paolo Grazioso, Fondazione Ugo Bordoni

He was born in Bologna on June 17th, 1963, received the Electronics Engineering degree magna cum laude from the University of Bologna in February 1989. After a one-year scholarship, in 1990 he was employed by Fondazione Ugo Bordoni where he still works. His research interests span several fields of radio communications, including propagation, mobile radio system architecture, digital television, spectrum efficiency and frequency management. He participated in various international research initiatives, represented Italy in various CEPT study groups, was part of the Italian delegation at major ITU conferences (RRC-06 and WRC-07) and co-authored 50 scientific and technical papers.

Marina Barbiroli, DEIS - Università di Bologna

She received her Laurea degree in Electronic Engineering from the University of Bologna in 1995. In January 2000 she received the PhD degree in Computer Science and Electronic Engineering from the University of Bologna and since July 2001 she is a researcher at Bologna University. Since 1999 she held several courses at Bologna University related to propagation mechanisms of the electromagnetic field. Currently she gives courses on “Electromagnetic Compatibility” and on “Electromagnetic Technologies for link design” for the second level degree in Telecommunications. Her research interests are on propagation models and planning strategies for wireless systems, including investigation of exposure levels and study of the coexistence of different systems (e.g. broadcast and mobile communications systems) operating in the same band or in adjacent bands.

Claudia Carciofi, Fondazione Ugo Bordoni

She received the degree in Electronics Engineering from the University of Bologna in 1990. After a one research grant on ATM, in 1992 she joined Fondazione Ugo Bordoni where she was involved in the second phase of the RACE programme. In 1997 she received the PhD in telecommunications from the University of Bologna and joined again Fondazione Ugo Bordoni to conduct research on propagation models for coverage prediction and exposure evaluation of radio systems. Her current research activities mainly focus on flexible spectrum management strategies such as cognitive radio systems and the coexistence of different systems in the same band. She is also involved in the activity to support the Italian Minister of Economic Development for the transition process from analogue to digital television systems.

Doriana Guiducci, Fondazione Ugo Bordoni

She was born in Bologna, Italy. She received the Laurea degree in telecommunications engineering, in 1999, and the Ph.D. degree in computer science and electronics engineering, in 2003, both from the University of Bologna. In 2003, she joined Fondazione Ugo Bordoni (FUB), Villa Griffone, Italy, where she is currently a researcher. Her activity is on the Italian transition from analogue to digital television, with special reference to cross-border coordination matters. She also works on protection from risks due to electromagnetic fields exposure. Her research interests include mobile communications and NGN and development of efficient policies for radio spectrum management.

Guido Riva, Fondazione Ugo Bordoni

He received the Laurea degree in Electronic Engineering in 1981 and in Physics in 1991, both from University of Bologna, Italy. Since 1985 he is with Fondazione Ugo Bordoni, mainly involved in Radio Systems Area activities. His main interests are on radio spectrum optimization, mobile radio systems and radio aspects of transition from analogue to digital television. For ten years, till 2003, he was Assistant Professor at University of Bologna, faculty of Electronic Engineering in Cesena. He is now involved in national programs about 900-MHz GSM band refarming with italian PTT ministry and about mobile QoS with AgCom, the National Authority.

References

Conference Preparatory Group Project Team D [CPGPTD] (2010a). WRC-12 AI 1.17 – Broadcasting vs mobile : cumulative effect of the base station (theoretical analysis) [Source: France, Doc.CPGPTD (10)036] (meeting documents 8th CPG-PTD, Budapest, Hungary, 13-16 April 2010). Retrieved from www.ero.dk

Conference Preparatory Group Project Team D [CPGPTD] (2010b). WRC-12 A.I. 1.17 options of Method A1 [Source: Italy, Doc.CPGPTD (10)156, meeting documents 10th CPG-PTD, Lisbon, Portugal, 14-17 December 2010). Retrieved from www.ero.dk

Conference Preparatory Group Project Team D [CPGPTD] (2011). WRC-12 A.I. 1.17 options of Method A1, [Doc.CPGPTD (10)156] (meeting documents 11th CPG-PTD, Paris, France, 26-29 April 2011). Retrieved from www.ero.dk

European Commission - Information Society and Media Directorate-General, Radio Spectrum Committee [DG-INFSO] (2008). Opinion of the RSC pursuant to Article 4.2 of Radio Spectrum Decision 676/2002/EC [RSCOM08-06final]. Retrieved from http://ec.europa.eu/information_society/policy/ecomm/radio_spectrum/_document_storage/rsc/rsc23_public_docs/rscom08-06.pdf

European Telecommunications Standards Institute - 3rd Generation Partnership Project (3GPP). (2009). LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Frequency (RF) system scenarios (3GPP TR 36.942 V8.1.0 Release 8; ETSI TR 136 942 V8.1.0). Sophia Antipolis, France: ETSI. http://www.etsi.org/deliver/etsi_tr/136900_136999/136942/08.01.00_60/tr_136942v080100p.pdf

Guidotti, A., Grazioso, P., Barbiroli, M., Carciofi, C., Guiducci, D., & Riva, G. (2011). Coexistence and mutual interference between mobile and broadcasting systems. Proceedings. 2011 IEEE 73rd Vehicular Technology Conference, Budapest, Hungary, 15-18 May 2011, pp.1-5. doi:10.1109/VETECS.2011.5956540

International Telecommunication Union – Radiocommunication sector, Joint Task Group 5-6 [ITU-R JTG 5-6] (2010). Studies on the use of the band 790-862 MHz by mobile applications and by primary services. Retrieved from http://www.itu.int/md/meetingdoc.asp?lang=en&parent=R07-JTG5.6-C&source=Russian%20Federation

International Telecommunication Union – Radiocommunication sector [ITU-R] (2006). Final Acts of the Regional Radiocommunication Conference 2006 (RRC-06). Geneva, Switzerland: ITU.

International Telecommunication Union – Radiocommunication Sector (1992). Directivity and polarization discrimination of antennas in the reception of television broadcasting (Rec. ITU-R BT.419-3). Retrieved from http://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.419-3-199006-I!!PDF-E.pdf

International Telecommunication Union – Radiocommunication Sector [ITU-R] (2009). Method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 3000 MHz (Rec. ITU-R P.1546-4). Retrieved from http://www.itu.int/dms_pubrec/itu-r/rec/p/R-REC-P.1546-4-200910-I!!PDF-E.pdf

Sakic, K., Gosta, M., & Grgic, S. (2009). Cross-border interference between broadcasting and mobile services. Proceedings. 51st International Symposium ELMAR-2009, 28-30 September 2009, Zadar, Croatia (pp. 229-232).

Setiawan, D., Gunawan, D., & Sirat, D. (2009). Interference Analysis of Guard Band and Geographical Separation between DVB-T and E-UTRA in Digital Dividend UHF Band. Proceedings. ICICI-BME 2009. Bandung, Indonesia, November 23-25, 2009. doi:10.1109/ICICI-BME.2009.5417258.