Huawei
H31-311_V2.5 · Question #193
The error correction capability of FEC is measured by coding gain. Which of the following statements about coding gain is wrong?
The correct answer is C. The coding gain of in-band FEC is greater than the coding gain of out-band FEC. See the full explanation below for the reasoning.
WDM/OTN Principles
Question
The error correction capability of FEC is measured by coding gain. Which of the following statements about coding gain is wrong?
Options
- AWhen BER is constant, the OSNR preserved by correction coding is called coding gain.
- BThe correction capability of FEC increases with the coding gain.
- CThe coding gain of in-band FEC is greater than the coding gain of out-band FEC
- DThe coding gain of AFEC is greater than the coding gain of FEC
How the community answered
(46 responses)- A2% (1)
- B15% (7)
- C76% (35)
- D7% (3)
Topics
#FEC#coding gain#OSNR#in-band vs out-band FEC
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