Capacity modelling and performance analysis of oam-ofdm wireless communication systems

Abstract

The Orbital Angular Momentum (OAM) wireless communication technology has received much attention in recent years for its natural orthogonality between different OAM states. Combining the OAMtechnology with the Orthogonal Frequency Division Multiplexing (OFDM) technology, we proposed a newOAM-OFDM wireless communication system to explore a newapproach for enhancing the transmission capacity of the wireless communication system. Atmospheric turbulence is an important factor for inluencing the capacity of the OAM-OFDM wireless communication system. In consideration of the effect of the atmospheric turbulence, we derived a crosstalk model of the proposedOAM-OFDM wireless communication system. Furthermore, a capacity model of the OAM-OFDM wireless communication system is proposed in consideration of the effect of atmospheric turbulence on both the OAM and OFDM signals. Compared with the conventional OAM wireless communication system, the capacity performance of the proposed OAM-OFDM wireless communication system is significantly improved and the average improvement is 751%.