Software Implementation and Cyclic Feature Characterization of Nu-FBMC/OQAM Signals

An extended frequency spread (FS) multicarrier system based on the filter bank and offset quadrature amplitude modulation (FS-FBMC/OQAM) approach applied to a critically sampled nonuniform FBMC/OQAM (Nu-FBMC/OQAM) transmission, using subchannel aggregation of uniform filter bank, is analyzed and described. The new adapted structure for this Nu-FBMC/OQAM transmission and corresponding orthogonality conditions are analyzed. Their implementation and verification are performed using MATLAB®. Some novel results related to the cyclic features of this Nu-FBMC/OQAM signal, based on the spectral correlation density (SCD) and estimated by the fast Fourier transform accumulation method (FAM), are presented.