Question

Which among the following techniques use direct sequence spread spectrum?

a.

Code Division Multiple Access

b.

Frequency Division Multiple Access

c.

Time Division Multiple Access

d.

Orthogonal Frequency Division Multiple Access

Posted under Cognitive Radio

Answer: (a).Code Division Multiple Access Explanation:Code Division Multiple Access is a channel access method. It allows a user to occupy the allocated bandwidth for an entire period. This is accomplished by spread spectrum technology where each user is provided with a spreading code for transmission.

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Q. Which among the following techniques use direct sequence spread spectrum?

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