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Patent Searching and Data


Title:
RADIO RECEIVER FOR PRELOADING AN AVERAGE DC-OFFSET INTO A CHANNEL FILTER
Document Type and Number:
Japanese Patent JP2006050673
Kind Code:
A
Abstract:

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.


Inventors:
JAKOBSSON PETER
Application Number:
JP2005293270A
Publication Date:
February 16, 2006
Filing Date:
October 06, 2005
Export Citation:
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Assignee:
ERICSSON TELEFON AB L M PUBL
International Classes:
H04B1/26; H03D1/22; H04L27/38; H03D3/00; H04B1/30; H04L25/06; H04L27/22
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Kuniaki Shimizu
Hayashi Zouzo