Radio receiver and method for preloading an average DC-offset into a channel filter

摘要

A radio receiver and method is provided that effectively compensates for an undesirable DC offset in a digital section of the radio receiver by preloading a filter with an average DC offset before filtering a signal within the filter. More specifically, the radio receiver includes an antenna for receiving a radio signal, and an analog section for demodulating the received radio signal into at least one baseband signal. The radio receiver also includes an analog-to-digital section for converting the at least one baseband signal into at least one digital baseband signal. The radio receiver further includes a preloading system for calculating an average DC offset using a predetermined number of symbols from the at least one digital baseband signal and for preloading a filter with the calculated average DC offset prior to filtering the at least one digital baseband signal in the filter.