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The modem groups the bits to be transmitted into ____

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The modem groups the bits to be transmitted into ____

(a) packet

(b) symbol

(c) frame

(d) segment

This question was addressed to me by my college professor while I was bunking the class.

The origin of the question is Hardware Architecture in chapter Software Defined Radio Architecture of Cognitive Radio

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The correct choice is (a) packet

For explanation I would say: The procedure performed for transmission at the modem is the inverse of the procedure performed for reception. The modem groups the bits to be transmitted into packet, and then structured redundancy is introduced for error correction at the receiver.

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