Linear angular momentum multiplexing-conceptualization and experimental evaluation with antenna arrays

Tim W. C. Brown, Ben H. Allen, Timothy D. Drysdale, Upasana K. Dagia

Research output: Contribution to journalArticlepeer-review


Linear angular momentum multiplexing is a new method for providing highly spectrally efficient short-range communication between a transmitter and receiver, where one may move at speed transverse to the propagation. Such applications include rail, vehicle and hyperloop transport systems communicating with fixed infrastructure on the ground. This paper describes how the scientific concept of linear angular momentum multiplexing evolves from orbital angular momentum multiplexing. The essential parameters for implementing this concept are a long array at least at one of the ends of the link; antenna element radiation characteristics and the array element spacing relative to the propagation distance. These parameters are also backed by short-range measurements carried out at 2.4 GHz used to model the Rice fading channel and determine resilience to multipath fading.
Original languageEnglish
Article number20200209
JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Issue number2242
Early online date7 Oct 2020
Publication statusPublished - 28 Oct 2020


  • wireless communications
  • orbital angular momentum multiplexing
  • linear angular momentum multiplexing
  • MIMO


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