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

In spread spectrum technique, the desired signal is multiplied _____ and interference signal is multiplied _____ Correct Answer Twice, once

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

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____ technique exploits lack of coherence between desired signal and interference.
If a continuous time signal x(t) with spectrum X(F) is sampled at a rate Fs=1/T samples per second, the spectrum of the sampled signal is _____________