Performance of an ideal wireless orbital angular momentum communication system using multiple-input multiple-output techniques

A wireless orbital angular momentum (OAM) communication system is modeled using multiple-input multiple-output (MIMO) techniques. The channel matrix is derived using the azimuthal phase profile of the OAM modes. A simulation of an ideal line of sight (LOS) infrastructure, based on the model is also presented. It consists of concentric circular array OAM generators at the transmitting side and a uniform circular array of conventional antennas at the receiving side. The results show that, the channel matrix achieves full rank and has equal eigenvalues. The transmission of OAM modes can therefore be used to maximize channel capacity in LOS MIMO communication systems.