Co-existence between LTE and Analogue TV

The study examined the potential for a 10 MHz FDD LTE network roll-out in major population centres in South Africa in the Region 1 digital dividend band (i.e. 790 – 862 MHz).  It reviewed analogue TV use in South Africa, established representative modelling parameters, developed appropriate sharing criteria and interference analysis methods and examined the impact of co-channel interference between analogue TV and LTE networks operating in geographically separate areas.  For the same operator we also analysed guard band and separation distance requirements for co-channel and adjacent band sharing between wideband mobile networks and DVB-T broadcasting systems.  As part of the study, laboratory bench measurements were undertaken to derive protection ratios (i.e. C/N+I) for a given offset between the mobile and broadcasting channel centre frequencies.  The measured C/N+I ratios were then used to derive minimum separation distances as a function of offset between channel centre frequencies for a range of representative scenarios.