Two-Way Communications via Reconfigurable Intelligent Surface
S Atapattu, R Fan, P Dharmawansa, G Wang, J Evans
Proceedings of the 2020 IEEE Wireless Communications and Networking Conference (WCNC) | IEEE | Published : 2020
The novel reconfigurable intelligent surface (RIS) is an emerging technology which facilitates high spectrum and energy efficiencies in Beyond 5G and 6G wireless communication applications. Against this backdrop, this paper investigates two-way communications via reconfigurable intelligent surfaces (RISs) where two users communicate through a common RIS. We assume that uplink and downlink communication channels between two users and the RIS can be reciprocal. We first obtain the optimal phase adjustment at the RIS. We then derive the exact outage probability and the average throughput in closed-forms for single-element RIS. To evaluate multiple-element RIS, we first introduce a gamma approxi..View full abstract
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Awarded by Australian Research Council
This work is supported in part by the Australian Research Council (ARC) through the Discovery Early Career Researcher (DECRA) Award under Grant DE160100020 and in part by the Discovery Project (DP) under Grant DP180101205.