Filter Design for Universal Filtered Multicarrier (UFMC) based Systems

Abstract

The universal filtered Multi-carrier (UFMC) is the most considerable modulation scheme for next generation wireless networks. The UFMC based system output is highly dependent on the sub-band filter response that used at transmitter end, which influences the emission of sub-band into the adjacent sub-bands and hence inter-carrier interference (ICI) and inter-sub-band interference (ISBI). In this paper, we focus on the design of sub-band filter. The aim of this filter design is to minimize the ICI and ISBI. First, we evaluated the ICI and ISBI in UFMC symbol regard to the filter specifications then primarily the filter order adjusted regard to the sub-band size. The simulation results show the variation of ICI and ISBI for proposed method and the conventional method. With this method, the ICI and ISBI were significantly reduced as compared to the conventional method.