Doppler Diversity and PAPR Enhancement in 5G Systems Through New Radio Technique [INVITED

Abstract

Next generation 5G communication systems will require better Doppler Diversity and higher Signal to Interference Ratio (SIR) in order to support high velocity and low latency applications. New Radio (NR) is the 5G radio technology proposed by 3GPP. The NR waveforms are more adaptable to different channel conditions due its filtering techniques and use of different sub-carrier spacing. Different sub-carrier filtering based waveforms are proposed for 5G, one of them is Universal Filtered Multi-carrier (UFMC) technique. UFMC is better for high velocity and low latency applications due to its flexibility of adapting waveform parameters over subcarriers as well as sub bands. The proposed prototype filter for UFMC that can be found in the literatures is Dolph-Chebyshev filter. This paper describes a novel and adaptive proto type filter (Fractional Powered Binomial Filter or FPBF) for UFMC [6] that can enhance the SIR in comparison to that of Dolph-Chebyshev filter based UFMC with different sub carrier spacing. The Peak to Average Power Ratio (PAPR) with FPBF based UFMC is also better than that of Dolph-Chebyshev filter based UFMC. The SIR performance improvement using FPBF is a novel technique and described first time in this paper.