Patent ID: 8149971
Filing Date: 2012-04-03
Classification: H03G,H04B

Abstract:
1. 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: the switch selectively couples one or more of the first-gain and second-gain output signals of the two or more radio front ends based on an idle mode or an adjustment mode, the detector is adapted to determine the idle mode or the adjustment mode based on at least one of the detected presence of the data pattern and a state of each CSF, and the detector comprises at least one of (i) a correlator adapted to detect the data pattern and (ii) a signal level detector adapted to detect the state of the CSF.