Hong, Hanjiang;
Wong, Kai-Kit;
Tong, Kin-Fai;
Xu, Hao;
Li, Haoyang;
(2025)
5G-coded fluid antenna multiple access over block fading channels.
Electronics Letters
, 61
(1)
, Article e70166. 10.1049/ell2.70166.
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Abstract
Fluid antenna multiple access (FAMA) is a concept capable of massive connectivity on the same physical channel without the need of precoding or interference cancellation, by exploiting a super-high dimensional received signal in the spatial domain from fluid antenna system (FAS). This letter investigates the use of 5G New Radio (NR) Modulation Coding Scheme (MCS) for FAMA systems to improve its connectivity over block fading channels. In particular, an iterative decoding receiver with iterative interference covariance estimation is proposed, designed explicitly for slow fading channels. Extrinsic information transfer (EXIT) chart is used to analyze the performance of the proposed iterative receiver. Both EXIT chart analysis and numerical results indicate that the proposed receiver outperforms the existing approach that uses fixed covariance in block fading channels. Also, the results indicate that coded FAMA can serve 100 user terminals (UTs) at the rate of 0.5 bit/s/Hz under rich scattering.
| Type: | Article |
|---|---|
| Title: | 5G-coded fluid antenna multiple access over block fading channels |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1049/ell2.70166 |
| Publisher version: | https://doi.org/10.1049/ell2.70166 |
| Language: | English |
| Additional information: | © The Author(s), 2025. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ |
| Keywords: | 5G mobile communication, demodulation, iterative decoding, modulation coding, multi-access systems |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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/10205186 |
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