Question

Which among the following replaces the static sine pulses of OFDM to improve flexibility?

a.

Wavelet bases

b.

Triangular pulses

c.

Impulse bases

d.

Ramp pulses

Posted under Cognitive Radio

Answer: (a).Wavelet bases Explanation:In multi-carrier wavelet packet modulation, wavelet bases replace the static sine/cosine pulses of OFDM. This technique provides higher sideband suppression. It also reduces inter-channel interference and inter-symbol interference.

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Q. Which among the following replaces the static sine pulses of OFDM to improve flexibility?

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