UAV-Relayed Finite-Blocklength Covert Communication With Channel Estimation
Why this work is in the frame
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Bibliographic record
Abstract
Unmanned aerial vehicle (UAV) mounted relays can provide effective solutions to extend the coverage of covert communications. Nevertheless, ignoring the covertness during channel estimation may lead to the failure of air-ground covert transmission. In this correspondence, a UAV-relayed long-distance covert communication scheme is proposed with the pilot design under finite blocklength. The warden adopts either independent or joint detection schemes to detect the covert transmission. We first calculate the optimal detection threshold and derive the covertness constraints at the warden. Then, the transmit power of the transmitter and UAV relay under these two detection schemes is optimized, respectively. Finally, the optimal blocklength of the pilot and data transmission is obtained by the one-dimensional search. Numerical results show the tradeoff of the two detection schemes and indicate the optimal blocklength allocation scheme.
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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) | 0.000 | 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 | 0.000 |
| Research integrity | 0.000 | 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