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 rateThe question was asked in an interview for job.This is a very interesting question from Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio

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

1.	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 rateThe question was asked in an interview for job.This is a very interesting question from Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio
Answer» The correct option is (a) Complex COMPUTATION is necessary The best 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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