Question

Which among the following is not a disadvantage of using OFDM?

a.

Complex computation is necessary

b.

Sensitive to frequency offset

c.

High peak to average power ratio

d.

Low data rate

Posted under Cognitive Radio

Answer: (a).Complex computation is necessary Explanation:OFDM requires only the computation of fast Fourier transform and inverse fast Fourier transform of the signal to be transmitted. However it requires the subcarriers to remain orthogonal and exhibits a large peak to average power ratio due to the presence of complex sinusoids in time domain OFDM signals.

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Q. Which among the following is not a disadvantage of using OFDM?

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