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arXiv · 2310.14251

FAS-assisted NOMA Short-Packet Communication Systems

Jianchao Zheng·Tuo Wu·Xiazhi Lai·Cunhua Pan·Maged Elkashlan·Kai-Kit Wong
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Abstract

In this paper, we investigate a fluid antenna system (FAS)-assisted downlink non-orthogonal multiple access (NOMA) for short-packet communications. The base station (BS) adopts a single fixed antenna, while both the central user (CU) and the cell-edge user (CEU) are equipped with a FAS. Each FAS comprises $N$ flexible positions (also known as ports), linked to $N$ arbitrarily correlated Rayleigh fading channels. We derive expressions for the average block error rate (BLER) of the FAS-assisted NOMA system and provide asymptotic BLER expressions. We determine that the diversity order for CU and CEU is $N$, indicating that the system performance can be considerably improved by increasing $N$. Simulation results validate the great performance of FAS.

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Jianchao Zheng, Tuo Wu, Xiazhi Lai, Cunhua Pan, Maged Elkashlan, Kai-Kit Wong. 2023-10-22. FAS-assisted NOMA Short-Packet Communication Systems. https://arxiv.org/abs/2310.14251

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