A Survey on STAR-RIS: Use Cases, Recent Advances, and Future Research Challenges

The recent development of metasurfaces, which may enable several use cases by modifying the propagation environment, is anticipated to substantially affect the performance of sixth-generation (6G) wireless communications. Metasurface elements can produce passive subwavelength scattering to enable a smart radio environment. Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS), which refers to reconfigurable intelligent surfaces (RISs) that can transmit and reflect concurrently (STAR), is gaining popularity. In contrast to the widely studied RIS, which can only reflect the wireless signal and serve users on the same side as the transmitter, the STAR-RIS can reflect and refract…

• NS
  National Science Foundation

  Awards: CNS-2128368, CNS-2107216, CMMI-2222810
• UD
  U.S. Department of Transportation
• HP
  Hubei Provincial Department of Education

  Award: T2020017
• NS
  Natural Science Foundation of Xiaogan City

  Award: XGKJ2022010095