Huawei
H31-341_V2.5 · Question #662
Which of the following description about QPSK modulation technology is wrong? (Multiple choice)
The correct answer is A. The essence of QPSX is to reduce the baud rate of the optical signal by half without reducing the line C. QPSK modulation can increase the spectral bandwidth, reduce the OSNR requirements of the system. See the full explanation below for the reasoning.
Question
Which of the following description about QPSK modulation technology is wrong? (Multiple choice)
Options
- AThe essence of QPSX is to reduce the baud rate of the optical signal by half without reducing the line
- BEPDM-QPSK is the best solution for 100G WDM transmission.
- CQPSK modulation can increase the spectral bandwidth, reduce the OSNR requirements of the system
- DThrough QPSK, one phase represents 2 digital bits, which is equivalent to the processing of "1 is divided
How the community answered
(54 responses)- A70% (38)
- B9% (5)
- D20% (11)
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