Patent ID: 7787549

Claim:
An impulsive noise suppresser, comprising: an automatic gain control unit, for determining a gain value according to a peak-to-average power ratio (PAPR); a variable gain amplification unit, for amplifying a reception signal by using the gain value, wherein the gain value is determined such that the amplified reception signal as unaffected by the impulsive noise can have an amplitude range smaller than a predetermined range; an impulsive detection unit, coupled to the variable gain amplification unit for determining whether the amplified reception signal is larger than a maximum, value of the predetermined range and outputting an impulsive alarm signal if the reception signal is larger than the maximum value; and an impulsive suppression unit, for receiving the amplified reception signal, eliminating the impulsive noise and outputting an output signal as receiving the impulsive alarm signal, wherein, when the impulsive suppression unit receives the impulsive alarm signal, the output signal is the maximum value of the predetermined range.