Patent ID: 7145957
Filing Date: 2006-12-05
Classification: H04L

Abstract:
1. A method for determining the power of a residual carrier perturbing a QAM-modulated multi-carrier signal in the 8 K mode according to the DVB-T (Digital Video Broadcasting for Terrestrial) standard, the method comprising: providing a QAM-modulated multi-carrier signal in the 8 K mode according to the DVB-T standard, said signal including a central carrier, said central carrier lying in the middle of individual carriers and being sometimes a continual pilot and sometimes a scattered pilot; using an interpolation algorithm and evaluating scattered pilots in said multi-carrier signal to identify correction factors with which channel correction of all carriers in said multi-carrier signal is carried out; recovering said correction factor of at least one user-data carrier directly or indirectly neighboring said central carrier from said channel-corrected multi-carrier signal; determining by interpolation a correction factor of said central carrier from said correction factor of said at least one user-data carrier; and calculating a power of said residual carrier perturbing said central carrier from said correction factor of said central carrier.