FAS-RIS Communication: Model, Analysis, and Optimization

This correspondence investigates the novel fluid antenna system (FAS) technology, combining with reconfigurable intelligent surface (RIS) for wireless communications, where a base station (BS) communicates with a FAS-enabled user with the assistance of a RIS. To analyze this technology, we derive th...

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Bibliographic Details
Published in:arXiv.org 2024-08
Main Authors: Yao, Junteng, Zheng, Jianchao, Wu, Tuo, Jin, Ming, Chau Yuen, Wong, Kai-Kit, Adachi, Fumiyuki
Format: Article
Language:English
Subjects:
Approximation
Lower bounds
Outages
Reconfigurable intelligent surfaces
Technology assessment
Upper bounds
Wireless communications
Online Access:Get full text
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Summary:This correspondence investigates the novel fluid antenna system (FAS) technology, combining with reconfigurable intelligent surface (RIS) for wireless communications, where a base station (BS) communicates with a FAS-enabled user with the assistance of a RIS. To analyze this technology, we derive the outage probability based on the block-diagonal matrix approximation (BDMA) model. With this, we obtain the upper bound, lower bound, and asymptotic approximation of the outage probability to gain more insights. Moreover, we design the phase shift matrix of the RIS in order to minimize the system outage probability. Simulation results confirm the accuracy of our approximations and that the proposed schemes outperform benchmarks significantly.
ISSN:2331-8422