Patent ID: 6246728
Filing Date: 2001-06-12
Classification: H04L

Abstract:
An apparatus for suppressing interfering DC component shifts affecting reception of a transmitted radio-frequency signal that is time-division multiplexed in the form of a succession of signal elements referred to as ""bursts"", each of which is made up of the same number ""m"" of samples, said apparatus comprising means for normalizing the power of the successively received bursts relative to the power of a resulting wanted signal, means for determining the instantaneous value of the DC component for burst segments, in groups of n, comprising the same integer number m/n of samples in the same burst, and for detecting mean values per segment that are obtained cumulatively on the basis of successive bursts, and means for determining value and position characteristics for the DC component shift for each received burst, by computing on the basis of the mean values and instantaneous values per segment, each shift being assumed to have at least approximately the same time position relative to the burst that it degrades as the following shift relative to the following burst, and corrector means for subtracting the shift characteristics determined for each burst from the baseband signal obtained after normalization.