Performance of unique word timing offset estimator
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Bibliographic record
Abstract
A quadrature amplitude modulation receiver must include a timing recovery circuit to identify the correct points in time to sample the output. Timing recovery is handled differently in synchronous systems than it is in burst mode systems. In synchronous systems the convergence (or dwell) time can be quite long without penalty. In burst mode systems timing must be recovered rapidly and is therefore aided by placing a unique word at the beginning of the preamble. The output of the matched filter is correlated with the unique word to find the timing offset required to align the time origin. This timing offset is used as the “delay” input to the fractional delay filter that synchronizes the signal in the receiver to the timebase [1][3][5]. This paper discusses the performance of the timing recovery circuit using a specific unique word: length-11 Barker sequence preceded by a cyclic prefix.
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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 | 0.000 | 0.001 |
| Open science | 0.000 | 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 it