OFDM based orthogonal and non-orthogonal multi carrier modulation 5G waveforms performance investigation

A novel waveform in 5G ought to facilitate supple coexistence with the intention to sustain varied service and deployment state of affairs in a carrier band and offer incredibly superior spectrum localization, at the same time inheriting the benefits of Orthogonal Frequency Division Multiplexing. The candidate for the above requirements is classified as Orthogonal based OFDM waveform and Non Orthogonal based OFDM waveform with multi carriers. In this paper, a detailed investigation, simulation, comparison and analysis of Filtered-OFDM (F-OFDM), Universal Filtered Multi Carrier which are OFDM based orthogonal waveform and Filter Bank Multi Carrier (FBMC) which is a OFDM based non orthogonal waveform is carried out. The simulation is accomplished by means of Matlab R2020 software at a frequency of 15 MHz, Signal to Noise Ratio of 18dB with diverse modulations like QPSK, 16QAM, 64QAM and 256QAM. The performance evaluation metrics like Bit Error Rate (BER), Signal Power, Power Spectral Density (PSD) and the Peak to Average Power Ratio (PAPR) is evaluated and the comparison of the simulation results illustrates that the FBMC is an efficient method and a better candidate for 5G applications.