Cyclic Prefix Extension

Cyclic prefix is required in OFDM and this sacrifices the Bandwidth

Cyclic prefix not required and this conserves the bandwidth


Large and interfering sidelobes

Low sidelobes


For correct detection, multiple access interference (MAI) cancellation should be performed at the receiver

MAI is repressed due to excellent frequency localisation of the subcarriers

Doppler Effect

Highly sensitive to carrier frequency offset

Less sensitive and hence performs significantly with the increase of the user mobility

MIMO Systems

High flexibility while adopting MIMO techniques

Limited flexibility

Spectrum Sensing

Degraded spectrum sensing performance due to spectral leakage problem in OFDM

High spectrum sensing resolution

Computational Complexity

It has very low complexity

It has high complexity