Spread spectrum (ss) encoding: a) name four spread spectrum techniques. b) which one of them was originally devised against eavesdropping in the military environment?

Explanation:

( a )

The four types of  spread spectrum techniques are as follows -

1. Direct sequence spread spectrum .

2. frequency hopping spread spectrum .

3. chirp spread spectrum .

4. time hopping spread spectrum .

( b )

The Direct sequence spread spectrum was devised for eavesdropping in the military .

In the field of telecommunications , the Direct sequence spread spectrum , it is the technique of spread spectrum modulation which is used to reduce the overall inference of the signal .

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