Patent ID: 7231190

Claim:
A wireless communication receiver for facilitating a termination of reception of a received signal on a voice channel simultaneously with an end of a transmission on the voice channel, the wireless communication receiver comprising: a receiver front end for receiving a known Stop Waveform comprising a predetermined symbol pattern on the voice channel, the Stop Waveform sent at the end of the transmission; and a processor coupled to the receiver front end and programmed to terminate the reception of the voice channel in response to detecting the Stop Waveform, wherein the processor is further programmed to: compute a plurality of characteristics derived from the received signal, including: a carrier-to-noise ratio; a maximum normalized symbol correlation energy over all symbols of the Stop Waveform; and a number of small and a number of large normalized symbol energy values; and detect the Stop Waveform by comparing the plurality of characteristics with a corresponding plurality of predetermined thresholds.