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A ____ is used to represent a symbol.

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A ____ is used to represent a symbol.

(a) scale

(b) number

(c) figure

(d) waveform shape

This question was addressed to me during an interview.

Query is from Hardware Architecture topic in chapter Software Defined Radio Architecture of Cognitive Radio

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Correct choice is (d) waveform shape

The explanation: Each symbol is represented by a waveform. The modem synthesizes the waveform and filters it to fit within the desired bandwidth.

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