Across the world, we are currently witnessing the deployments of 4G LTE-Ad-vanced and the 5G research is reaching its peak point. The 5G research mainly con-centrates on addressing some of the existing OFDM based LTE problems along with use of non-contiguous fragmented spectrum. Univer-sal Filtered Multi Carrier (UFMC) has been considered as one of the candidate waveform for the 5G communications because it pro-vides robustness against the Inter Symbol In-terference (ISI), and Inter Carrier Interference (ICI) and is suitable for low latency scenarios. In this paper, a novel approach is proposed to use Kaiser-Bessel filter based pulse shaping instead of standard Dolph-Chebyshev filter for UFMC based waveform to reduce the spectral leakage into nearby sub-bands. In this paper, UFMC system is simulated using MATLAB software, a comparative study for Dolph-Che-byshev and Kaiser-Bessel filters are performed and the results are also presented in terms of power spectrum density (PSD) analysis, Com-plementary Cumulative Distribution Func-tion (CCDF) analysis, and Adjacent Channel Power Ratio (ACPR) analysis. The simulated results show a better power spectral densi-ty and lower sidebands for UFMC (Kaiser Based window), when compared with UFMC (Dolph-Chebyshev) and conventional OFDM.
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