Question
Explain the sub-carrier multiplexing (SCM) scheme used in optical communication.
Why should it be used in conjunction with WDM?
Answer :
Word Count : 247
____ _________ _______ ____ _______ ___ _________.
________ ____ ___ ____ _____ __________ _________ _______ _______ ______.
____ ________ _____ _________ __________ ____.
________ _______ _____ _____ _______ ________ _____.
_______ ________ __________ _____ __________ ___ _____ __________ _______.
__________ ___ __________ _________ ____ __________ ________ ___ ___.
_________ __________ _________ _______ _________ __________ ____ ___.
________ ___ _______ ____ _________ ____ ___ _______ ___.
___ _______ ____ ___ _________ ________.
____ _________ _____ _____ ____ __________ _______ ________ ________ _________.
_______ __________ ______ _________ ______.
____ _______ __________ _________ ___ _______ ________ _______ __________ ____.
_____ ______ _________ __________ _____ ___.
___ ________ ______ __________ ___ _________ ___ _____ ________ __________ ___ ______.
____ ________ _______ ______ ________ _______.
___ __________ _______ ___ ________.
_____ _________ ___ _____ ______ _____ ________.
_______ ____ ______ ____ ___ _________.
__________ _________ ___ ___ _____ ____ ________ __________.
_____ __________ ________ ____ ___ __________ __________ _____ _______ _________.
____ _____ _____ __________ ___ _________ __________ _______ _______ ___ __________ _______.
__________ _________ _________ _____ __________ ______ ____ ___ _________ _____ _____.
________ ______ _________ _______.
Skip in 10
Subcarrier Multiplexing (SCM) is a method for combining (multiplexing) many different communications signals so that they can be transmitted along a single optical fiber. SCM (also known as SCMA, SubCarrier Multiple Access) is used in passive optical network (PON) access infrastructures as a variant of wavelength division multiplexing (WDM).
SCM follows a different approach compared to WDM. In WDM an optical carrier is modulated
________ ____ ___ ____ _____ __________ _________ _______ _______ ______.
____ ________ _____ _________ __________ ____.
________ _______ _____ _____ _______ ________ _____.
_______ ________ __________ _____ __________ ___ _____ __________ _______.
__________ ___ __________ _________ ____ __________ ________ ___ ___.
_________ __________ _________ _______ _________ __________ ____ ___.
________ ___ _______ ____ _________ ____ ___ _______ ___.
___ _______ ____ ___ _________ ________.
____ _________ _____ _____ ____ __________ _______ ________ ________ _________.
_______ __________ ______ _________ ______.
____ _______ __________ _________ ___ _______ ________ _______ __________ ____.
_____ ______ _________ __________ _____ ___.
___ ________ ______ __________ ___ _________ ___ _____ ________ __________ ___ ______.
____ ________ _______ ______ ________ _______.
___ __________ _______ ___ ________.
_____ _________ ___ _____ ______ _____ ________.
_______ ____ ______ ____ ___ _________.
__________ _________ ___ ___ _____ ____ ________ __________.
_____ __________ ________ ____ ___ __________ __________ _____ _______ _________.
____ _____ _____ __________ ___ _________ __________ _______ _______ ___ __________ _______.
__________ _________ _________ _____ __________ ______ ____ ___ _________ _____ _____.
________ ______ _________ _______.
IGNOU ACADEMY
Your IGNOU journey, made easier.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
Continue Reading — It's Free
Sign in with Google to unlock more of this answer.
✓ Free access
✓ Unlock up to 60% of the answer
✓ No payment required
✓ Unlock up to 60% of the answer
✓ No payment required
Quick Google sign-in. No separate registration form.