TY - INPR AV - public SN - 2162-2337 Y1 - 2024/06/19/ TI - Performance Analysis of FAS-Aided Backscatter Communications UR - https://doi.org/10.1109/LWC.2024.3416700 ID - discovery10194089 N2 - In this letter, we study the performance of backscatter communications (BC) over the position-flexible fluid antenna system (FAS) technology. We consider a situation where a single fixed-antenna source sends information to a FAS reader through the wireless forward (i.e., source-to-tag) and backscatter (i.e., tag-to-reader) channels. We first derive the cumulative distribution function (CDF) of the equivalent channel at the FAS receiver, and obtain closed-form expressions for the outage probability (OP) and the delay outage rate (DOR) assuming a correlated Rayleigh distribution. To gain more insights into the system performance, we present analytical expressions of the diversity order, OP and DOR in the high signal-to-noise ratio (SNR) regime. Numerical results reveal that FAS at the reader can significantly improve the performance of BC compared with a fixed-antenna reader. N1 - This version is the author-accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. JF - IEEE Wireless Communications Letters PB - Institute of Electrical and Electronics Engineers (IEEE) A1 - Ghadi, Farshad Rostami A1 - Kaveh, Masoud A1 - Wong, Kai-Kit A1 - Zhang, Yangyang KW - Backscatter communication KW - correlated fading channel KW - fluid antenna system KW - outage probability ER -