Investigation of electromagnetic compatibility between DVB-T/T2 and LTE 700 for co-channel case

Abstract

The 694–790 MHz band (700 MHz) known also as the second digital dividend was allocated to the mobile, except aeronautical mobile, service on a co-primary basis with other services to which this band is allocated on a primary basis in Region 1 and identified to International Mobile Telecommunications (IMT) by the 2012 World Radiocommunication Conference (WRC-12). The allocation of mobile service in Europe and in other countries of Region 1 in 700 MHz band got effective after the 2015 World Radiocommunication Conference (WRC-15). Countries of Region 1 will be able to plan and use these frequencies for mobile services including IMT. The objective of this paper is to assess the electromagnetic compatibility of Digital Video Broadcasting-Terrestrial (DVB-T/DVB-T2) and mobile broadband (LTE) operating both in 700 MHz band. The research contains an assumption of a preferred frequency division duplex (FDD) channelling arrangement 703–733 MHz (uplink) and 758–788 MHz (downlink). The model consists of two elements, a DVB-T/DVB-T2 system and LTE network. Cochannel scenario was analyzed in this paper, and possible impact of DVB-T/DVB-T2 to LTE base stations receivers. The Monte Carlo simulations within SEAMCAT software were used for interference analysis. The Monte Carlo method provides more relaxed electromagnetic compatibility scenario. For SEAM-CAT simulations was used Recommendation ITU-R P.1546-5 propagation model. The results obtained provide the minimum coupling distance required between DVB-T/DVB-T2 and LTE networks in the 700 MHz band to maintain the necessary performance level of the LTE system.