Analytical Characterization of Coverage Regions for STAR-RIS-aided NOMA/OMA Communication Systems
Farshad Rostami Ghadi, F. Javier Lopez-Martinez, and Kai-Kit Wong
TL;DR
This paper analytically characterizes the coverage regions of STAR-RIS-aided two-user downlink systems employing NOMA and OMA, demonstrating that STAR-RISs extend coverage and NOMA outperforms OMA.
Contribution
It provides the first analytical coverage region characterization for STAR-RIS-aided NOMA and OMA systems under the energy-splitting protocol.
Findings
STAR-RISs extend the coverage region.
NOMA outperforms OMA in coverage and performance.
Analytical expressions confirm the benefits of STAR-RISs.
Abstract
We provide an analytical characterization of the coverage region of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided two-user downlink communication systems. The cases of orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) are considered, under the energy-splitting (ES) protocol. Results confirm that the use of STAR-RISs is beneficial to extend the coverage region, and that the use of NOMA provides a better performance compared to the OMA counterpart.
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Taxonomy
TopicsAdvanced Wireless Communication Technologies · Satellite Communication Systems · Optical Wireless Communication Technologies