A signal processing device is provided, the device having a signal input for receiving a signal conveyed over a channel and defining a received signal. The device further includes one or more filters for generating a signal response based upon the received signal. The signal response includes an estimated value of a correntropy statistic. Additionally, the device includes a decision module connected to at least one of the filters for probabilistically deciding whether the received signal contains an information signal component based upon the estimated value of the correntropy statistic. The device further includes a signal output to convey a signal output indicating the received signal corresponds to a known signal template if the decision module decides that the received signal contains the information signal component.