Patent ID: 7016434

Claim:
A method of detecting an interfering data-bearing communication signal in a time division multiple access (TDMA) radio receiver, the method comprising: taking samples from symbol sequences of a received signal over a TDMA timeslot; generating by a modulation detector a signal path corresponding to the TDMA timeslot or a portion thereof; determining an error estimate representing the erroneousness of the signal path generated; comparing the error estimate representing the erroneousness of the signal path generated with a predetermined threshold value; and recognizing the reception of the interfering data-bearing communication signal if the error estimate is greater than the predetermined threshold value, wherein the error estimate representing the erroneousness of the signal path generated is a signal path error metric which is generated by means of quadratic errors which are calculated on the basis of a difference between individual symbol sequence specific sample points and corresponding reference constellation points constructed on the basis of a channel estimate describing a state of a radio channel used.