Finite-Alphabet Beamformed NOMA for Multiuser MISO Broadcast Visible Light Communications
Bibliographic record
Abstract
In this paper, we consider an optimal finite-alphabet non-orthogonal multiple access (NOMA) design for a multiuser multi-input single-output (MISO) visible light communication (VLC) broadcast system when channel state information is available at the transmitter. By utilizing the cooperation of multiuser interference, an optimal multidimensional additively uniquely decomposable constellation group (AUDCG) is designed to maximize the received worst-case minimum Euclidean distance of all users subject to a normalized average optical power within the orthants of a real-valued space. This optimal AUDCG is proved to be commonly used pulse amplitude (PAM) with an optimal beamformer, which is the optimal solution to a linear max-min programming problem. In addition, our optimal AUDCG admits fast demodulation of the sum signal from a noisy received signal as well as fast decoding individual signal from the estimated sum signal. Computer simulations indicate that our proposed finite-alphabet NOMA design has significantly better error performance than currently available zero-forcing (ZF), minimum mean square error (MMSE) and time-division orthogonal access (TDMA) transmission schemes for multiuser MISO VLC broadcast systems.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".