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The transmitter of frequency hopping system is fed with encoding scheme such as

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The transmitter of frequency hopping system is fed with encoding scheme such as

(a) Frequency shift keying

(b) Binary phase shift keying

(c) Frequency & Binary phase shift keying

(d) None of the mentioned

I got this question during an online interview.

My doubt stems from Spread Spectrum topic in portion Spread Spectrum Techniques of Digital Communications

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Right choice is (c) Frequency & Binary phase shift keying

Explanation: For transmission, the binary data is fed into modulator using modulation scheme such as frequency shift keying or binary phase shift keying.

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