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PreprintCC BY 4.0arXiv

Can Reciprocal RIS Perform as Non-Reciprocal RIS?

  • Matteo Nerini
  • Juan Vidal Alegría
  • Bruno Clerckx
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Abstract

Yes, if and only if some optimal non-reciprocal RIS (i.e., maximizing a given performance metric) makes the round-trip channel transmitter-RIS-transmitter symmetric, which holds if the channel transmitter-RIS has rank one or if single-stream transmission is optimal.

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Cite

BibTeXRIS
BibTeX
@misc{nerini2026reciprocal,
  title = {{Can Reciprocal RIS Perform as Non-Reciprocal RIS?}},
  author = {Matteo Nerini and Juan Vidal Alegría and Bruno Clerckx},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.30896},
  eprint = {2610.30896},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.30896},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Can Reciprocal RIS Perform as Non-Reciprocal RIS?
AU  - Matteo Nerini
AU  - Juan Vidal Alegría
AU  - Bruno Clerckx
PY  - 2026
DA  - 2026/10/22
PB  - arXiv
DO  - 10.48550/arxiv.2610.30896
UR  - https://arxiv.org/abs/2610.30896
AB  - Yes, if and only if some optimal non-reciprocal RIS (i.e., maximizing a given performance metric) makes the round-trip channel transmitter-RIS-transmitter symmetric, which holds if the channel transmitter-RIS has rank one or if single-stream transmission is optimal.
ER  -