Patent ID: 8090054
Filing Date: 2012-01-03
Classification: H04B,H04L

Abstract:
1. An apparatus for receiving a received signal which comprises a desired channel signal, a first adjacent channel signal (ACS), and a second ACS, the desired channel signal being between the first and the second ACSs, the strength of the first ACS is larger than that of the second ACS, the apparatus comprising: a frequency converting circuit, configured to convert the received signal according to a first frequency and a second frequency to respectively generate a first converted signal and a second converted signal, wherein the first converted signal comprises at least a portion of the first ACS, and the second converted signal comprises at least a portion of the second ACS; a computing circuit, coupled to the frequency converting circuit, configured to determine first and second signal quality parameters according to the first and the second converted signals, respectively; and a control circuit, coupled to the frequency converting circuit and the computing circuit, configured to output a control signal into the frequency converting circuit according to the first and the second signal quality parameters; wherein the frequency converting circuit filters out the first ACS of the received signal according to the control signal to generate an output signal, which comprises the desired channel signal and at least a portion of the second ACS.