What does this research mean for the field?

A novel on-off mechanism for RIS-enabled symbiotic backscatter NOMA systems achieves transmission effectiveness approaching that of ideal continuous adjustment as the number of RIS elements increases, while eliminating the need for simultaneous amplitude and phase control. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.CHALLENGES_CONSENSUS.

What question did this study set out to answer?

To develop and evaluate a practical on-off reflection mechanism for segmented reconfigurable intelligent surface (RIS)-enabled symbiotic backscatter communication riding over ambient NOMA signals.

August 22, 2026ElectronicsOpen Access

On–Off Backscatter: An RIS-Enabled Symbiotic Approach in NOMA Systems

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Authors

MCMingkai ChenNational University of Defense Technology HDHaiyang DingBeijing University of Posts and Telecommunications SWShilian WangOpen University of China

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Implication

Performance analysis demonstrates that an on-off RIS backscatter design achieves near-ideal capacity in NOMA networks, indicating a viable low-complexity solution for symbiotic communications.

Key Points

To develop and evaluate a practical on-off reflection mechanism for segmented reconfigurable intelligent surface (RIS)-enabled symbiotic backscatter communication riding over ambient NOMA signals.
Derived analytical expressions for coexistence outage probability, ergodic capacity, and high-SNR performance boundaries across diverse dispersed end users.
Conducted Monte Carlo simulations to validate the derived theoretical performance metrics under various network configurations.
Transmission effectiveness of the proposed on-off mechanism asymptotically approached that of ideal continuous amplitude-and-phase adjustments as the number of RIS elements increased.
The on-off framework eliminated the hardware requirement to adjust reflection coefficients in amplitude and phase simultaneously, significantly reducing system control complexity.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/6a895fd3ca7ade938187ebd6 https://doi.org/10.3390/electronics15163722

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Implication

Performance analysis demonstrates that an on-off RIS backscatter design achieves near-ideal capacity in NOMA networks, indicating a viable low-complexity solution for symbiotic communications.

On–Off Backscatter: An RIS-Enabled Symbiotic Approach in NOMA Systems

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Implication

Key Points

Cite This Study

On–Off Backscatter: An RIS-Enabled Symbiotic Approach in NOMA Systems

Discussion

Member takes

Implication

Key Points

Cite This Study

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