Performance analysis of an orbital angular momentum multiplexed amplify-and-forward radio relay chain with inter-modal crosstalk

B. Allen, D. Simmons, T. D. Drysdale, J. Coon

Research output: Contribution to journalArticlepeer-review

Abstract

The end-to-end spectral efficiency and Bit Error Rate (BER) of an Amplify-and-Forward (AF) radio relay chain employing Orbital Angular Momentum (OAM) multiplexing is presented. The inherent divergence of a beam carrying OAM is overcome by means of a lens. Modelled and measured inter-modal crosstalk levels are incorporated into the analysis. The results show that an end-to-end spectral efficiency of up to 8 bits/s/Hz is achievable using 4 OAM modes to multiplex four parallel data streams over 20 hops provided that the detrimental effects of inter-modal crosstalk are mitigated. The spectral efficiency is expected to scale further by using more OAM modes. The BER profile along the relay chain is analysed for each of the four OAM modes.
Original languageEnglish
Article number181063
JournalRoyal Society Open Science
Volume6
Issue number1
Early online date23 Jan 2019
DOIs
Publication statusE-pub ahead of print - 23 Jan 2019

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