Patent ID: 8224276

Claim:
A method for signal processing in a receiver that can be tuned to different carriers, wherein an analog signal is received via an antenna, the method comprising: filtering and amplifying the analog signal in a first step, converting the filtered and amplified signal into a baseband frequency that is filtered in a second method step, and, in a third method step, generating a digital signal from the filtered baseband frequency signal by means of analog-to-digital conversion, and, in a fourth method step, filtering the digital signal and subsequently decoding the filtered digital signal and outputting the decoded data, and further comprising determining from the digital signal the energy of the adjacent carriers N+1 and N−1, wherein a carrier N contains a signal of interest and the receiver is tuned to it, and comparing the energy value of the carriers N+1 and N−1 with a threshold value, in that in the case where the threshold value is exceeded, a frequency shift of the signal by +Δf or −Δf is effected in the second method step prior to the filtering, and in that the frequency shift thus produced is reversed by a frequency shift by −Δf or +Δf in the fourth method step prior to the filtering and the signal is decoded.