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.
Highlights
The first years of the new millennium saw two driving factors deeply influencing the spectrum management scenarios
This decision gives rise to new interference issues to be coped with, due to the coexistence of digital broadcast television and mobile radio services in the same or adjacent frequency bands: (i) co-channel interference between neighbouring countries or regions, one of them using the 790 862 MHz band for mobile system and the other for broadcast television, and (ii) adjacent channel interference within a given territory, where frequencies up to 790 MHz will be used for television broadcasting and those immediately above will be used for mobile services
With hTx=100 m the performance degradation is negligible. This is due to the low interference generated on the base stations (BSs) antennas with Effective Radiated Power (ERP)=50 dBm, as in this case this value is negligible with respect to the internal interference of the mobile system
Summary
The first years of the new millennium saw two driving factors deeply influencing the spectrum management scenarios. In order to exploit such an opportunity while satisfying the market requests, the last World Radiocommunication Conference (WRC 07) allocated on a co-primary basis the upper part of the UHF band (channels 61 to 69, 790 862 MHz) to mobile services (exception made for aeronautical mobile) in Region 1, including Europe, starting from June 2015, and allowed some EU countries to utilise this allocation before 2015, in a specific sub-band subject to technical coordination with other neighbouring countries (European Commission - Information Society and Media Directorate-General, Radio Spectrum Committee [DG-INFSO], 2008) This decision gives rise to new interference issues to be coped with, due to the coexistence of digital broadcast television and mobile radio services in the same or adjacent frequency bands: (i) co-channel interference between neighbouring countries or regions, one of them using the 790 862 MHz band for mobile system and the other for broadcast television, and (ii) adjacent channel interference within a given territory, where frequencies up to 790 MHz will be used for television broadcasting and those immediately above will be used for mobile services.
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