The impact of IMT system on ATSC system

Korea has made a plan to allocate CH 14~ CH 51(470 MHz~698 MHz) for DTV. Therefore, it is necessary to take into account compatibility between DTV and other potential service system in spare band. This paper assumes that DTV operates on CH 51 (692 MHz~ 698 MHz) and IMT system operates on CH 52 (698 MHz~704 MHz) in spare band, and then analyzes the interference probability from IMT system to DTV with Spectrum Engineering Advanced Monte Carlo Analysis Tool (SEAMCAT). For the simulation, two interference cases in four different scenarios are considered. In a result, a guard band of 8 MHz is required in the case of interference from IMT system downlink (DL) to DTV with considering the depolarization factor of 16 dB and the interference from IMT system uplink (UL) to DTV is negligible.