| 摘要 |
In the apparatus and the associated method, N-ary phase shift keyed received signals R12 are temporally demultiplexed in a 1:M demultiplexer DEMUX. In each of the sub-units DU1 . . . DUM the carrier signal C12 of the received signal R12 is recovered. The carrier phase angle angC12 is always chosen in the range -pi/N . . . pi/N. Occurring phase jumps PHJ of the carrier phase angle angC12 from one sub-unit DU(i-1) to the next, DUi, of size ±2pi/N are detected and are taken into account in a differential decoding of the synchronously demoudlated received signals R12. For this purpose, signals of the same or other sub-units must be temporarily stored in the sub-unit DUi until they are needed. In this way one obtains a high tolerance with respect to phase noise of the received signal R12.
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