TY - INPR AV - public SN - 0018-9545 Y1 - 2024/02/06/ TI - FAS-assisted NOMA Short-Packet Communication Systems UR - http://dx.doi.org/10.1109/tvt.2024.3363115 EP - 6 ID - discovery10188057 N2 - 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. SP - 1 N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. JF - IEEE Transactions on Vehicular Technology PB - Institute of Electrical and Electronics Engineers (IEEE) A1 - Zheng, Jianchao A1 - Wu, Tuo A1 - Lai, Xiazhi A1 - Pan, Cunhua A1 - Elkashlan, Maged A1 - Wong, Kai-Kit KW - Block error rate (BLER); flexible-position antenna; fluid antenna system (FAS); non-orthogonal multiple access (NOMA); short-packet communication ER -