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The frequency hopping system uses ______ modulation scheme.

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The frequency hopping system uses ______ modulation scheme.

(a) FSK

(b) BPSK

(c) MFSK

(d) MPSK

I had been asked this question during an interview.

Origin of the question is Direct Sequence and Frequency Hopping in section Spread Spectrum Techniques of Digital Communications

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The correct option is (c) MFSK

To explain: The frequency hopping spread spectrum system uses M-ary frequency shift keying modulation scheme.

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