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Non-Orthogonal Frequency Division Multiple Access

Xu, T; Darwazeh, IZZAT; (2020) Non-Orthogonal Frequency Division Multiple Access. In: 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring). IEEE: Antwerp, Belgium. Green open access

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Abstract

This paper proposes a frequency-domain multiple user access scheme termed non-orthogonal frequency division multiple access (NoFDMA), which maintains the same data rate per user while allowing more users to access via non-orthogonal user overlapping in a given spectral band. User side signal processing follows existing standards with minor modifications. Receiver side operation can jointly process signals from all the users. Computational complexity is investigated for NoFDMA, which shows slightly increased operations than the typical orthogonal frequency division multiple access (OFDMA). Nevertheless, effective spectral efficiency of NoFDMA, considering both raw spectral efficiency and computational complexity, is higher than that of OFDMA. The scalability of the multiple access scheme is flexible via tuning the user overlapping ratio. Simulation reveals that the number of accessed users is doubled using the NoFDMA strategy when compared with the traditional OFDMA scheme over the same spectral resource utilization.

Type: Proceedings paper
Title: Non-Orthogonal Frequency Division Multiple Access
Event: IEEE 91st Vehicular Technology Conference: VTC2020-Spring
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/VTC2020-Spring48590.2020.9128663
Publisher version: https://doi.org/10.1109/VTC2020-Spring48590.2020.9...
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10093300
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