A multiuser FAS-NOMA framework for short-packet communications
TL;DR
This pape investigates the performance of a fluid antenna system (FAS)-assisted non-orthogonal multiple access (NOMA) network to enable edge-enhanced connectivity in short-packet communications, and confirms that the proposed FAS-NOMA framework provides a flexible and effective solution for short-packet edge access.
Abstract
This pape investigates the performance of a fluid antenna system (FAS)-assisted non-orthogonal multiple access (NOMA) network to enable edge-enhanced connectivity in short-packet communications. A multi-user downlink framework is proposed, wherein cell-edge users exploit the spatial diversity offered by FAS to mitigate severe path loss and interference, while central users employ successive interference cancellation for multi-layer signal decoding. The analysis focuses on evaluating the average block error rate, the sum rate performance, and the influence of power allocation parameters. Compared with the conventional FAS-NOMA system, the proposed scheme effectively mitigates the fading effect in edge channels through dynamic antenna port selection and properly accommodates dispersed weak signals, significantly enhancing the communication reliability for cell-edge users. Simulation results demonstrate the effectiveness of the proposed scheme. The findings confirm that the proposed FAS-NOMA framework provides a flexible and effective solution for short-packet edge access, offering a favorable trade-off between reliability and throughput for latency-critical applications such as URLLC and IoT.