A Novel Hybrid OFDM Technique for 5G

Abstract

A novel hybrid orthogonal frequency division multiplexing (H-OFDM) technique, for 5G candidate waveforms, has been proposed to improve the performance of conventional OFDM systems in this paper. In H-OFDM system instead of conventional cyclic prefixes (CPs) it is used hybrid CP as a guard interval. The hybrid CP consists of zero tail (ZT), unique word (UW) and CP. Computer simulations have been performed to show the performance of the proposed system in stationary and non-stationary frequency selective Rayleigh fading channels. The obtained simulation results using IEEE 802.16 physical layer specifications have demonstrated that the proposed H-OFDM method has considerably better performance and Doppler shift tracking than conventional OFDM.