Underwater Optical Communication System Relayed by $\alpha-\mu$ Fading Channel: Outage, Capacity and Asymptotic Analysis
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Bibliographic record
Abstract
We investigate underwater optical communication system that is relayed by a single decode-and-forward (DF) relay through an exponential-generalized Gamma distribution (EGG) into a final destination. Specifically, a certain terminal device sends data through underwater wireless optical link (UWO) that utilizes the so-called blue laser technology into a nearby relay that in term sends a decoded (and modulated) version of the received signal into a remote destination. The RF link is assumed to follow the generalized $\alpha-\mu$ distribution; which include many distributions as a special cases, e.g., Rayleigh. In the other hand, the UWO link is presumed to follow the state-of-art Exponential-Generalized Gamma distribution (EGG) which was recently proposed to model the underwater optical turbulence. Closed-form expressions of outage probability, average error rate and ergodic capacity are derived assuming heterodyne detection technique (HD). Also, asymptotic outage expression is obtained for more performance insights. Results show that high achievable rate is obtained for high-speed underwater communication systems when turbulence conditions underwater are relatively weak. In addition, the RF link is dominating the outage performance in weak optical turbulence while UWO link is dominating the outage performance in severe optical turbulence.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| 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 it