Patent ID: 6757340
Filing Date: 2004-06-29
Classification: H03D,H04B,H04L

Abstract:
A radio receiver comprising:an antenna for receiving a radio signal; an analog section, coupled to said antenna, for demodulating the radio signal into at least one baseband signal; an analog-to-digital section, coupled to said analog section, for converting the at least one baseband signal into at least one digital baseband signal, respectively; a filter for filtering the at least one digital baseband signal; a preloading system, coupled to said analog-to-digital section and said filter, for using a predetermined number of symbols from the at least one digital baseband signal to calculate an average DC offset thereof and preloading said filter with the calculated average DC offset prior to filtering the at least one digital baseband signal in said filter; and a counter for selectively controlling a switch to direct the predetermined number of symbols from the at least one digital baseband signal to a processor operable to calculate the average DC offset, said processor operable to preload the filter with the calculated average DC offset prior to the counter selectively controlling the switch to direct the remaining at least one digital baseband signal to the filter.