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Author

Robert W. Heath

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2 papers indexed here

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2026

On the Detection Limits of Power-Domain NOMA: Information-Theoretic Bounds and Spatial Diversity

Power-domain non-orthogonal multiple access (NOMA) relies on successive interference cancellation (SIC) at the receiver, leading to the prevailing but incomplete view that power allocation merely enables SIC. This paper develops an information-theoretic framework for the detection limits of power-domain NOMA under fini...

Liang Dong, Robert W. Heath · 1 citation
2026

A Lorentzian Dispersion Model for Stacked Intelligent Metasurfaces

Stacked intelligent metasurfaces (SIM) provide a low-power means for MIMO transmission and reception using large multi-layer apertures that are digitally controlled. In this letter, we develop a SIM model that is consistent with metasurface theory. We use the Lorentzian function to emulate the amplitude-phase trade-off...

Alfredo Gonzalez, Tharmalingam Ratnarajah, Robert W. Heath · 0 citations

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