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Frequency hopping system can provide reliable mitigation only if

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Frequency hopping system can provide reliable mitigation only if

(a) Hopping rate is greater than the symbol rate

(b) Hopping bandwidth is large

(c) Hopping rate is greater than the symbol rate & its bandwidth is large

(d) None of the mentioned

I got this question in exam.

My question is from Stream Encryption and Commercial Applications in chapter Spread Spectrum Techniques of Digital Communications

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The correct option is (c) Hopping rate is greater than the symbol rate & its bandwidth is large

Easiest explanation: The frequency hopping system can provide reliable mitigation only if its hopping rate is faster than the symbol rate and the hopping bandwidth is large.

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