Which modulation format is being used?

Posted by: Pdfprep Category: 4A0-255 Tags: , , Post Date: January 1, 2021

Suppose there is a 40 Gbit/s signal which has a symbol rate of Gbaud/s.

Which modulation format is being used?
A . QPSK
B . BPSK
C . 4QAM
D . DP-QPSK

Answer: C

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