%0 Journal Article
%@ 0018-9545
%A Zheng, Jianchao
%A Wu, Tuo
%A Lai, Xiazhi
%A Pan, Cunhua
%A Elkashlan, Maged
%A Wong, Kai-Kit
%D 2024
%F discovery:10188057
%I Institute of Electrical and Electronics Engineers (IEEE)
%J IEEE Transactions on Vehicular Technology
%K Block error rate (BLER); flexible-position antenna;   fluid antenna system (FAS); non-orthogonal multiple access (NOMA);   short-packet communication
%P 1-6
%T FAS-assisted NOMA Short-Packet Communication Systems
%U https://discovery.ucl.ac.uk/id/eprint/10188057/
%X In this letter, 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.
%Z This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.