Patent ID: 7356322

Claim:
Apparatus for detecting a data pattern from a plurality of received signals, the apparatus comprising: two or more radio front ends, each radio front end adapted to generate in parallel first-gain and second-gain output signals from a corresponding one of the plurality of received signals; two or more channel selection filters (CSFs), each CSF adapted to filter either the first-gain output signal or the second-gain output signal to pass a corresponding information channel signal; a detector coupled to each of the corresponding ones of the CSFs and adapted to detect a presence of the data pattern; and a switch adapted to selectively couple one or more of the first-gain and second-gain output signals of the two or more radio front ends to one or more corresponding CSFs based on the detected presence or absence of the data pattern and the state of each CSF; wherein: during the idle mode, the switch couples first radio front end first-gain and second-gain output signals to corresponding CSFs to provide first and second CSF output signals, and during the adjustment mode, i) either a first radio front end second-gain output signal or a first radio front end first-gain output signal from the corresponding CSF is selected as the first CSF output signal based on the state of each CSF; ii) the switch couples either a first-gain or a second-gain output signal of a second radio front end to a corresponding CSF to provide the second CSF output signal; and iii) gain of the first and second radio front ends is adjusted based on the states of the CSFs.