Question

Why is a cyclic prefix required in an OFDMA?

a.

To ensure symbol time is an integer number

b.

To help overcome multipath and ISI

c.

To maintain orthogonality

d.

To make OFDMA scalable

Posted under Wireless and Mobile Communications

Answer: (b).To help overcome multipath and ISI

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Q. Why is a cyclic prefix required in an OFDMA?

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