To preload an average DC offset to a filter prior to filtering a signal in the filter to effectively compensate undesired DC offset within a digital part of a radio receiver.
The radio receiver includes an antenna for receiving radio signal, an analog section for demodulating the received radio signal into at least one baseband signal, and an analog-to-digital section for converting the at least one baseband signal into at least one digital baseband signal. The radio receiver also includes a preloading system for calculating the average DC offset, using a predetermined number of symbols from the at least one digital baseband signal and for preloading the calculated average DC offset to a filter, prior to filtering the at least one digital baseband signal with the filter.
Hajime Asamura
Kuniaki Shimizu
Hayashi Zouzo
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