Spectral efficiency comparison of OFDM/FBMC for uplink cognitive radio networks
EURASIP Journal on Advances in Signal Processing - Special issue on filter banks for next-generation multicarrier wireless communications
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In this paper we compare the performance of cyclic pre- fix based OFDM (CP-OFDM) system and OFDM/offset QAM (OFDM/OQAM) system in doubly dispersive chan- nels, by investigating the signal reconstruction perfectness, time and frequency dispersion robustness, and sensitivity to frequency offset. Both analysis and simulation results show that various parameter adaptations can be made with re- spect to the channel state information to improve the system performance.