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FAS-RIS Communication: Model, Analysis, and Optimization
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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.
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Cited by 1 Pith paper
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FAS-Driven Spectrum Sensing for Cognitive Radio Networks
Optimizing fluid antenna positions and receive beamforming at a secondary user increases primary-user detection probability in cognitive radio spectrum sensing, with the sensing objective reducing to maximizing received SNR.
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