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In spread spectrum technique, the desired signal is multiplied _____ and interference signal is multiplied _____

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In spread spectrum technique, the desired signal is multiplied _____ and interference signal is multiplied _____

(a) Once, twice

(b) Twice, once

(c) Twice, thrice

(d) Thrice, twice

The question was posed to me during a job interview.

My query is from Spread Spectrum, TDMA and FDMA topic in chapter Multiplexing and Multiple Access of Digital Communications

1 Answer

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The correct answer is (b) Twice, once

Explanation: In spread spectrum technique, the desired signal is multiplied twice and interference signal is multiplied once.

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