On Performance of RIS-Aided Fluid Antenna Systems
CoRR(2024)
摘要
This letter studies the performance of reconfigurable intelligent surface
(RIS)-aided communications for a fluid antenna system (FAS) enabled receiver.
Specifically, a fixed singleantenna base station (BS) transmits information
through a RIS to a mobile user (MU) which is equipped with a planar fluid
antenna in the absence of a direct link.We first analyze the spatial
correlation structures among the positions (or ports) in the planar FAS, and
then derive the joint distribution of the equivalent channel gain at the user
by exploiting the central limit theorem. Furthermore, we obtain compact
analytical expressions for the outage probability (OP) and delay outage rate
(DOR). Numerical results illustrate that using FAS with only one activated port
into the RIS-aided communication network can greatly enhance the performance,
when compared to traditional antenna systems (TAS).
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关键词
Delay outage rate,fluid antenna system,outage probability,reconfigurable intelligent surface,spatial correlation
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