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What is the purpose of a PHY preamble?

What is the purpose of a PHY preamble?

PrepAway - Latest Free Exam Questions & Answers

A.
It provides the receiver(s) with an opportunity for RF channel synchronization prior to the start of the
PLCP header.

B.
It communicates important information about the PSDU’s length, rate, and upper layer protocol- related
parameters.

C.
It provides a cyclic redundancy check (CRC) for the receiving station to validate that the PLCP header
was received correctly.

D.
It indicates to the PHY the modulation that shall be used for transmission (and reception) of the PSDU.


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