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Optimal Placement of Transmissive RIS in the Near Field for Capacity Maximization in THz Communications [article]

Nithish Sharvirala, Amine Mezghani, Ekram Hossain
2023 arXiv   pre-print

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This study centers on Line-of-Sight (LoS) MIMO communication enabled by a Transmissive Reconfigurable Intelligent Surface (RIS) operating in the Terahertz (THz) frequency bands. The study demonstrates that the introduction of RIS can render the curvature of the wavefront apparent over the transmit and receive arrays, even when they are positioned in the far field from each other. This phenomenon contributes to an enhancement in spatial multiplexing. Notably, simulation results underline that
more » ... optimal placement of the RIS in the near-field is not solely contingent on proximity to the transmitter (Tx) or receiver (Rx) but relies on the inter-antenna spacing of the Tx and Rx.
arXiv:2312.00977v1 fatcat:p4jlovxpprccnp2yasok3ey6w4
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Citation

Nithish Sharvirala, Amine Mezghani, Ekram Hossain. "Optimal Placement of Transmissive RIS in the Near Field for Capacity Maximization in THz Communications." arXiv (2023)