| 摘要 |
A communications channel detector which determines the availability of a desired type of communications channel in a communication system having at least one communications channel, the communications channels including data streams comprising a number of data symbols. The channel detector includes a phase detector, a phase comparator coupled to the phase detector, and a phase correlator coupled to the phase comparator. The phase detector is configured to provide a plurality of phase measurement s for at least two consecutive data symbols comprising a selected one of the communications channels. The phase comparator is configured to determine the phase differences betwee n the obtained phase measurements. The phase correlator is configured to determine the whether or not the determined phase differences exhibit a predetermined phas e difference profile.
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