MMSE Based Interference Processing For Satellite Broadcast Reception

The problem of adjacent satellite interference (ACI) within the direct-to-home (DTH) satellite broadcast reception scenario is considered. The use of small DTH front-end reception systems results inevitably in a higher interference level from adjacent satellites using the same frequency band. The growth in satellite communication and the trend to small dishes increases the ACI problem. The general problem of interference limited DTH reception has been studied in recent work. This paper extends the work of (J. Grotz et al., 2005) by considering additionally an MMSE based method based on the proposal by Beidas and Gamal (2002). The interference channel model and the iterative interference cancellation algorithm are introduced and applied to the DTH digital broadcast case. Simulations of the interesting scenarios are conducted and discussed. It is shown, that the algorithm works well over large ranges of the considered scenarios of frequency offset and signal power levels.