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. (WO2009118263) AUTOMATIC FILTER CONTROL

Pub. No.:    WO/2009/118263    International Application No.:    PCT/EP2009/053210
Publication Date: Fri Oct 02 01:59:59 CEST 2009 International Filing Date: Thu Mar 19 00:59:59 CET 2009
IPC: H04B 1/16
Applicants: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
PETERSSON, Tony
OREDSSON, Filip
SUNDSTRÖM, Lars
Inventors: PETERSSON, Tony
OREDSSON, Filip
SUNDSTRÖM, Lars
Title: AUTOMATIC FILTER CONTROL
Abstract:
A method and apparatus for controlling the power consumption of a receiver based on current operating conditions is described herein. A receiver according to the present invention applies a received signal to a variable filter. The received signal includes a desired in-band signal. Depending on the current operating conditions, the received signal may further include one or more unwanted out-of-band blocking signals. A filter controller controls one or more operating parameters of the variable filter to maintain the power ratio at the filter output of the power of the blocking signal(s) to the in-band signal at or below a desired level. In so doing, the present invention controls the receiver power consumption while still providing the desired receiver performance.