Three-dimensional subband video transmission through mobile satellite channels
Why this work is in the frame
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Bibliographic record
Abstract
Pyramidal vector quantization (PVQ), with its robust fixed-rate property, has been applied to two-dimensional (2-D) image coding. We extend the PVQ scheme to three-dimensional (3-D) subband video coding and apply it to shadowed mobile satellite channels. The Canadian geostationary mobile satellite channel has been modeled as shadowed Rician fading. The proposed scheme has efficient image compression while exhibiting graceful performance degradation in fading and shadowing as encountered in the mobile satellite channel. This ensures consistent visual quality for video signals transmitted over a shadowed fading channel with minimum delay and system complexity. Compared to the 2-D subband PVQ algorithm, the 3-D scheme can achieve 1.0-2.0 dB PSNR improvement or, equivalently, 21-34% bit rate reduction.
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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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.005 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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